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As the importance of renewable energy sources becomes more and more apparent, look to our top-quality journals for cutting-edge reports on solar cell and photovoltaic research.

In May 2007 the Institute for Scientific Information listed the Top 20 Most Cited Papers on Solar Cells, with papers published in Advanced Functional Materials number one on both lists:

Most cited paper (1997-2007):

Most cited paper (2005-2007):

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Defect-Laden MoSe2 Quantum Dots Made by Turbulent Shear Mixing as Enhanced Electrocatalysts

Defect‐Laden MoSe2 Quantum Dots Made by Turbulent Shear Mixing as Enhanced Electrocatalysts

“Turbulent shear mixing” is utilized to maximize catalytic sites of MoSe2 by breaking up bulk counterpart into defect-laden quantum dots, which demonstrate enhanced electrocatalytic activities in hydrogen evolution reaction and toward the reduction of I3 in dye-sensitized solar cells.

[Communication]
Chongyang Zhu, Yuan Huang, Feng Xu, Peng Gao, Binghui Ge, Jing Chen, Haibo Zeng, Eli Sutter, Peter Sutter, Litao Sun
Small, May 24, 2017, https://doi.org/10.1002/smll.201700565 Read article

The Photoelectric Properties of Polymer Acceptors Containing Oxadiazole and Thiadiazole

The Photoelectric Properties of Polymer Acceptors Containing Oxadiazole and Thiadiazole

Two A1–D–A2–D type polymer acceptors containing oxadiazole (PNOZ) or thiadiazole (PNTZ) are prepared and applied for all-polymer solar cells. Employing PNTZ as the acceptor material and PTB7 as the donor material, the all-polymer solar cells based on PTB7/PTNZ give the a power conversion efficiency of 2.58%.

[Full Paper]
Chao Weng, Zhaoxia Liu, Huan Guo, Songting Tan
Macromol. Chem. Phys., May 24, 2017, https://doi.org/10.1002/macp.201700094 Read article

Controlled Growth of CH3NH3PbI3 Using a Dynamically Dispensed Spin-Coating Method: Improving Efficiency with a Reproducible PbI2 Blocking Layer

Controlled Growth of CH3NH3PbI3 Using a Dynamically Dispensed Spin‐Coating Method: Improving Efficiency with a Reproducible PbI2 Blocking Layer

Dynamic spinning: We introduce a dynamically dispensed spin-coating technique in a two-step deposition to form a perovskite layer with controllable quantities of crystalline PbI2. Using this technique, the concentration of CH3NH3I solution is kept constant at the reaction interface, ensuring smooth growth of films for use in perovskite solar cells.

[Full Paper]
Yingzhuang Ma, Parth Vashishtha, Kai Chen, Elijah L. Peach, David Ohayon, Justin M. Hodgkiss, Jonathan E. Halpert
ChemSusChem, May 24, 2017, https://doi.org/10.1002/cssc.201700449 Read article

Hybrid Perovskites: Effective Crystal Growth for Optoelectronic Applications

Hybrid Perovskites: Effective Crystal Growth for Optoelectronic Applications

Organic–inorganic hybrid perovskite is a promising material for next-generation optoelectronic devices. A wide range of optoelectronic properties of perovskite are controllable for target applications using effective crystal growth. Recent progress in perovskite optoelectronics is highlighted, focusing particularly on solar cells and light-emitting diodes, as well as crystallization strategies for light harvesting and light emitting.

[Review]
Taewoo Jeon, Sung Jin Kim, Jisun Yoon, Jinwoo Byun, Hye Rim Hong, Tae-Woo Lee, Ji-Seon Kim, Byungha Shin, Sang Ouk Kim
Adv. Energy Mater., May 24, 2017, https://doi.org/10.1002/aenm.201602596 Read article

Chemically Modified Indium-Tin-Oxide Electrodes for Heterojunction Organic Solar Cells Based on Different Organic Donors

Chemically Modified Indium‐Tin‐Oxide Electrodes for Heterojunction Organic Solar Cells Based on Different Organic Donors

In order to achieve high performance, the SAM and different donor materials was used in this work. The best performance was achieved when SubPc and para-benzene sulfonyl chlorides with NO2- terminal group were used as a donor and SAM, respectively.

[Full Paper]
Ganbaatar Tumen-Ulzii, Delgerjargal Altantsetseg, Nyamjargal Ochirkhuyag, Delgertsetseg Byambasuren, Masaru Sakomura, Sarangerel Khayankhyarvaa, Ganzorig Chimed
ChemistrySelect, May 23, 2017, https://doi.org/10.1002/slct.201700482 Read article

Monolithic Photoassisted Water Splitting Device Using Anodized Ni-Fe Oxygen Evolution Catalytic Substrate

Monolithic Photoassisted Water Splitting Device Using Anodized Ni‐Fe Oxygen Evolution Catalytic Substrate

Ni-Fe oxyhydroxide foil is fabricated through continuous roll-to-roll compatible methods of electrodeposition and anodization. The catalysts exhibit good oxygen evolution activity and excellent stability. Moreover, Ni-Fe catalytic substrate is integrated with an amorphous silicon solar cell to demonstrate a monolithic photoassisted water splitting device. This approach provides insights for exploiting highly efficient and industry applicable water splitting device.

[Full Paper]
Wan Jae Dong, Young Jin Song, Hansub Yoon, Gwan Ho Jung, Kisoo Kim, Sungjoo Kim, Jong-Lam Lee
Adv. Energy Mater., May 23, 2017, https://doi.org/10.1002/aenm.201700659 Read article

Diammonium and Monoammonium Mixed-Organic-Cation Perovskites for High Performance Solar Cells with Improved Stability

Diammonium and Monoammonium Mixed‐Organic‐Cation Perovskites for High Performance Solar Cells with Improved Stability

Mixed organic cation lead–halide perovskite solar cells demonstrate remarkably improved stability while maintaining high efficiency. Incorporation of low concentrations of ethylenediammonium into CH3NH3PbI3 perovskite enables fabrication of planar solar cells with up to 18.6% power conversion efficiency that retain 75% of their performance after 72 h of continuous operation under 1 sun irradiation at 50 °C and 50% relative humidity.

[Full Paper]
Jianfeng Lu, Liangcong Jiang, Wei Li, Feng Li, Narendra K. Pai, Andrew D. Scully, Cheng-Min Tsai, Udo Bach, Alexandr N. Simonov, Yi-Bing Cheng, Leone Spiccia
Adv. Energy Mater., May 23, 2017, https://doi.org/10.1002/aenm.201700444 Read article

Crosslinked Semiconductor Polymers for Photovoltaic Applications

Crosslinked Semiconductor Polymers for Photovoltaic Applications

Three promising applications of crosslinking in organic solar cells are reviewed. Most importantly, crosslinking is used to stabilize the blend morphology in bulk heterojunction solar cells. In addition, stable interlayers can be formed and crosslinking enables solution processing of multilayer devices. A third possibility is the stabilization of nanoimprinted patterns in the active layers.

[Research News]
Frank-Julian Kahle, Christina Saller, Anna Köhler, Peter Strohriegl
Adv. Energy Mater., May 23, 2017, https://doi.org/10.1002/aenm.201700306 Read article

Composition Engineering in Doctor-Blading of Perovskite Solar Cells

Composition Engineering in Doctor‐Blading of Perovskite Solar Cells

By tuning the composition of precursor solution high phase purity perovskite thin films are obtained at a temperature of 120 °C via doctor-blading, and over 19% power conversion efficiencies are achieved in inverted p–i–n structured perovskite solar cells.

[Communication]
Shi Tang, Yehao Deng, Xiaopeng Zheng, Yang Bai, Yanjun Fang, Qingfeng Dong, Haotong Wei, Jinsong Huang
Adv. Energy Mater., May 23, 2017, https://doi.org/10.1002/aenm.201700302 Read article

Identifying the Real Minority Carrier Lifetime in Nonideal Semiconductors: A Case Study of Kesterite Materials

Identifying the Real Minority Carrier Lifetime in Nonideal Semiconductors: A Case Study of Kesterite Materials

Minority carrier lifetimes are often overestimated for kesterite materials from time-resolved photoluminescence (TRPL) due to complex charge carrier dynamics in this material system. Here, it is shown that detrapping processes dominate the photoluminescence decay for Cu2ZnSnSe4 and Cu2ZnSn(S,Se)4. Minority carrier lifetimes ≤500 ps are estimated from TRPL, device simulation, and additional measurements demonstrating a significant performance limitation.

[Full Paper]
Charles J. Hages, Alex Redinger, Sergiu Levcenko, Hannes Hempel, Mark J. Koeper, Rakesh Agrawal, Dieter Greiner, Christian A. Kaufmann, Thomas Unold
Adv. Energy Mater., May 23, 2017, https://doi.org/10.1002/aenm.201700167 Read article

An Interdiffusion Method for Highly Performing Cesium/Formamidinium Double Cation Perovskites

An Interdiffusion Method for Highly Performing Cesium/Formamidinium Double Cation Perovskites

A modified two-step interdiffusion method is developed to fabricate high-quality cesium/formamidinium double cation perovskites with various compositions that have superior intrinsic thermal stability than those with methylammonium cation. Perovskite solar cells and modules based on Cs0.1FA0.9PbI2.865Br0.135 show the highest power conversion efficiency of 19.3% and 16.4%, respectively, in a planar structure.

[Full Paper]
Weiming Qiu, Aniruddha Ray, Manoj Jaysankar, Tamara Merckx, Joao P. Bastos, David Cheyns, Robert Gehlhaar, Jef Poortmans, Paul Heremans
Adv. Funct. Mater., May 22, 2017, https://doi.org/10.1002/adfm.201700920 Read article

Effect of Donor Strength and Bulk on Thieno[3,4-b]-pyrazine-Based Panchromatic Dyes in Dye-Sensitized Solar Cells

Effect of Donor Strength and Bulk on Thieno[3,4‐b]‐pyrazine‐Based Panchromatic Dyes in Dye‐Sensitized Solar Cells

Dye-ing to be infrared: Thieno[3,4-b]-pyrazine (TPz)-based dyes can access the near-infrared NIR spectral region and show power conversion efficiencies (PCEs) of up to 8.1 % with sunlight being converted at wavelengths up to 800 nm for 17.6 mA cm−2 of photocurrent in a co-sensitized DSC device. Precise control of dye energetics is demonstrated here.

[Full Paper]
Nalaka P. Liyanage, Hammad Cheema, Alexandra R. Baumann, Alexa R. Zylstra, Jared H. Delcamp
ChemSusChem, May 19, 2017, https://doi.org/10.1002/cssc.201700546 Read article

Methylammonium-Mediated Evolution of Mixed-Organic-Cation Perovskite Thin Films: A Dynamic Composition-Tuning Process

Methylammonium‐Mediated Evolution of Mixed‐Organic‐Cation Perovskite Thin Films: A Dynamic Composition‐Tuning Process

Under control: FA1−xMAxPbI3 mixed-organic-cation iodide perovskite (MOCP) thin films have been synthesized. By simply enriching the precursor solutions with methylammonium cations, the MOCPs form via a dynamic composition-tuning process that is key to obtaining thin films with superior properties, exact composition, excellent uniformity, and extra-large grains.

[Communication]
Chongwen Li, Yuanyuan Zhou, Li Wang, Yue Chang, Yingxia Zong, Lioz Etgar, Guanglei Cui, Nitin P. Padture, Shuping Pang
Angew. Chem. Int. Ed., May 19, 2017, https://doi.org/10.1002/anie.201704188 Read article

Thermally Stable MAPbI3 Perovskite Solar Cells with Efficiency of 19.19% and Area over 1 cm2 achieved by Additive Engineering

Thermally Stable MAPbI3 Perovskite Solar Cells with Efficiency of 19.19% and Area over 1 cm2 achieved by Additive Engineering

By enhancing the crystalline quality of the simple and widely used MAPbI3 perovskite through additive engineering, unprecedented photovoltaic performance and thermal stability are achieved. A certified efficiency of 19.19% is obtained for devices with active area over 1 cm2, and the high-performing devices show unprecedented durability, maintaining >80% of the initial efficiency after 500 h of thermal aging at 85 °C.

[Communication]
Yongzhen Wu, Fengxian Xie, Han Chen, Xudong Yang, Huimin Su, Molang Cai, Zhongmin Zhou, Takeshi Noda, Liyuan Han
Adv. Mater., May 19, 2017, https://doi.org/10.1002/adma.201701073 Read article

Towards Efficient Spectral Converters through Materials Design for Luminescent Solar Devices

Towards Efficient Spectral Converters through Materials Design for Luminescent Solar Devices

Sspectral converters can be applied to finished solar cells to overcome intrinsic non-absorption and thermalization losses and improve the device efficiency. Recent progress in the development of new materials for spectral conversion through luminescent downshifting, luminescent solar concentration, and upconversion is reviewed, with emphasis placed on their integration with emerging technologies, including perovskite, organic, and dye-sensitized solar cells.

[Progress Report]
Barry McKenna, Rachel C. Evans
Adv. Mater., May 19, 2017, https://doi.org/10.1002/adma.201606491 Read article

Toward Sustainable Organic Semiconductors from a Broad Palette of Green Reactions

Toward Sustainable Organic Semiconductors from a Broad Palette of Green Reactions

[Full Paper]
Alexandre Faurie, Jérémie Grolleau, Frédéric Gohier, Magali Allain, Stéphanie Legoupy, Pierre Frère
Eur. J. Org. Chem., May 18, 2017, https://doi.org/10.1002/ejoc.201700317 Read article

One-Step Synthesis of a MoS2−CuS Composite with High Electrochemical Activity as an Effective Counter Electrode for CdS/CdSe Sensitized Solar Cells

One‐Step Synthesis of a MoS2−CuS Composite with High Electrochemical Activity as an Effective Counter Electrode for CdS/CdSe Sensitized Solar Cells

Counter offer: The counter electrode/electrolyte interface is studied electrochemically and the optimized MoS2−CuS composite shows far less charge-transfer resistance. The results demonstrate that MoS2 effectively transfers electrons to the active CuS catalyst sites of the counter electrode, thereby enhancing the photovoltaic performance of the quantum dot sensitized solar cell.

[Article]
Chaitanya Krishna Kamaja, Rami Reddy Devarapalli, Manjusha V. Shelke
ChemElectroChem, May 18, 2017, https://doi.org/10.1002/celc.201700231 Read article

A Two-Resonance Tapping Cavity for an Optimal Light Trapping in Thin-Film Solar Cells

A Two‐Resonance Tapping Cavity for an Optimal Light Trapping in Thin‐Film Solar Cells

A two-resonance tapping cavity is proposed for an effective broadband light trapping in the absorber layer of thin-film solar cells. When this new optical cavity is applied to high performance polymer cells, an optimal light harvesting enhancement is achieved, corresponding to a 19% increase in power conversion efficiency.

[Full Paper]
Quan Liu, Pablo Romero-Gomez, Paola Mantilla-Perez, Silvia Colodrero, Johann Toudert, Jordi Martorell
Adv. Energy Mater., May 18, 2017, https://doi.org/10.1002/aenm.201700356 Read article

Finding Relevant Parameters for the Thin-film Photovoltaic Cells Production Process with the Application of Data Mining Methods

Finding Relevant Parameters for the Thin‐film Photovoltaic Cells Production Process with the Application of Data Mining Methods

[Full Paper]
Jan Ulaczyk, Krzysztof Morawiec, Paweł Zabierowski, Tomasz Drobiazg, Nicolas Barreau
Mol. Inf., May 17, 2017, https://doi.org/10.1002/minf.201600161 Read article

Interrogation of a PS1-Based Photocathode by Means of Scanning Photoelectrochemical Microscopy

Interrogation of a PS1‐Based Photocathode by Means of Scanning Photoelectrochemical Microscopy

Unraveling electron transfer processes in photocurrent generation at photosystem 1-based biocathodes. By using scanning photoelectrochemical microscopy and specifically selected electrode materials, the analysis of the modified surfaces allows the simultaneous evaluation of electron transfer processes at both ends of the photosystem, with the tip microelectrode acting as source for local irradiation and as current collector to identify the source of charge recombination.

[Full Paper]
Fangyuan Zhao, Nicolas Plumeré, Marc M. Nowaczyk, Adrian Ruff, Wolfgang Schuhmann, Felipe Conzuelo
Small, May 16, 2017, https://doi.org/10.1002/smll.201604093 Read article

Tailoring Organic Cation of 2D Air-Stable Organometal Halide Perovskites for Highly Efficient Planar Solar Cells

Tailoring Organic Cation of 2D Air‐Stable Organometal Halide Perovskites for Highly Efficient Planar Solar Cells

2D organometal halide perovskites with high environmental stability are successfully obtained by introducing short branched-chain spacer cations. The resulting (iso-BA)2(MA)3Pb4I13 exhibits a remarkable increase of optical absorption, crystallinity, and in particular out-of-plane orientation in comparison to the conventional linear n-BA+. A high power conversion efficiency of 10.63% is hence obtained for such 2D perovskite solar cells.

[Communication]
Yani Chen, Yong Sun, Jiajun Peng, Wei Zhang, Xiaojun Su, Kaibo Zheng, Tõnu Pullerits, Ziqi Liang
Adv. Energy Mater., May 16, 2017, https://doi.org/10.1002/aenm.201700162 Read article

Perovskite Tandem Solar Cells

Perovskite Tandem Solar Cells

The remarkable progress of perovskite tandem solar cells, now above 25% efficiency for a silicon–perovskite four-terminal tandem and 18% for monolithic all-perovskite tandems, is reviewed. In detail, the candidate materials, contact layers, and device challenges are examined, outlining a roadmap toward a future of true third-generation thin-film photovoltaics comprising high-efficiency at low cost.

[Progress Report]
Niraj N. Lal, Yasmina Dkhissi, Wei Li, Qicheng Hou, Yi-Bing Cheng, Udo Bach
Adv. Energy Mater., May 16, 2017, https://doi.org/10.1002/aenm.201602761 Read article

Function Follows Form: Correlation between the Growth and Local Emission of Perovskite Structures and the Performance of Solar Cells

Function Follows Form: Correlation between the Growth and Local Emission of Perovskite Structures and the Performance of Solar Cells

A comparative analysis of the local structural, morphological, and emission characteristics of different perovskite films rationally justifies the higher photovoltage yielded by the better performing devices.

[Full Paper]
M. Ibrahim Dar, Alexander Hinderhofer, Gwenole Jacopin, Valentina Belova, Neha Arora, Shaik Mohammed Zakeeruddin, Frank Schreiber, Michael Grätzel
Adv. Funct. Mater., May 16, 2017, https://doi.org/10.1002/adfm.201701433 Read article

The effect of the fluorine loading on the optoelectronic and photovoltaic properties of (X-DADAD-)n-type donor–acceptor copolymers with the benzothiadiazole A units

The effect of the fluorine loading on the optoelectronic and photovoltaic properties of (X‐DADAD‐)n‐type donor–acceptor copolymers with the benzothiadiazole A units

Akkuratov et al. synthesized two new (X-DADAD)n-type conjugated copolymers using non-fluorinated and fluorinated benzothiadiazole as electronacceptor (A) moieties. It has been shown that introducing fluorine atoms decreases the polymer HOMO energy, which is translated to higher open-circuit voltage of organic solar cells. Additionally, introduction of the fluorine atoms improves the morphology of the polymer composite with [70]PCBM. The improved photoactive blend morphology delivers enhanced short-circuit current densities and power conversion efficiencies of organic solar cells. Thus, introducing fluorine atoms in the backbone of (X-DADAD)n-type conjugated copolymers represents a promising route for improving their photovoltaic properties.

[Rapid Research Letter]
Alexander V. Akkuratov, Diana K. Susarova, Liana N. Inasaridze, Pavel A. Troshin
Phys. Status Solidi RRL, May 15, 2017, https://doi.org/10.1002/pssr.201700087 Read article

Improving Interfacial Charge Recombination in Planar Heterojunction Perovskite Photovoltaics with Small Molecule as Electron Transport Layer

Improving Interfacial Charge Recombination in Planar Heterojunction Perovskite Photovoltaics with Small Molecule as Electron Transport Layer

A new sulfur-containing n-type organic small molecule hexaazatrinaphtho[2,3-c][1,2,5]thiadiazole (HATNT) is proposed for perovskite solar cells. In comparison with traditional PC61BM, benefitting from much more significant suppression of charge recombination at the MAPbI3/HATNT interface and strong interfacial interaction between the MAPbI3 and HATNT via S[BOND]I or S[BOND]Pb bonding, solution-processed high-performance HATNT-based perovskite solar cells are demonstrated with an optimized efficiency up to 18.1%.

[Full Paper]
Ning Wang, Kexiang Zhao, Tao Ding, Wenbo Liu, Ali Said Ahmed, Zongrui Wang, Miaomiao Tian, Xiao Wei Sun, Qichun Zhang
Adv. Energy Mater., May 15, 2017, https://doi.org/10.1002/aenm.201700522 Read article

Perovskite Chalcogenides with Optimal Bandgap and Desired Optical Absorption for Photovoltaic Devices

Perovskite Chalcogenides with Optimal Bandgap and Desired Optical Absorption for Photovoltaic Devices

SrSnSe3 and SrSnS3 are predicted to be direct gap semiconductors with bandgap value being within the optimal range of 0.9–1.6 eV, to exhibit good optical absorption properties and high carrier mobility, and to enable flexible bandgaps continuously tuned within the range of 0.9–1.6 eV via the elemental mixing strategy, thereby render both materials as promising candidates for photovoltaic applications.

[Communication]
Ming-Gang Ju, Jun Dai, Liang Ma, Xiao Cheng Zeng
Adv. Energy Mater., May 15, 2017, https://doi.org/10.1002/aenm.201700216 Read article

A Band-Edge Potential Gradient Heterostructure to Enhance Electron Extraction Efficiency of the Electron Transport Layer in High-Performance Perovskite Solar Cells

A Band‐Edge Potential Gradient Heterostructure to Enhance Electron Extraction Efficiency of the Electron Transport Layer in High‐Performance Perovskite Solar Cells

A gradient heterojunction electron transport layer (GHJ ETL), prepared by a facile low-temperature route, is utilized in perovskite solar cells (PSCs) for the first time. PSCs based on the potential GHJ ETL demonstrate an efficiency of 18.08% with less hysteresis effect, which is due to excellent management of charge transport and recombination.

[Full Paper]
Yu Hou, Xiao Chen, Shuang Yang, Chunzhong Li, Huijun Zhao, Hua Gui Yang
Adv. Funct. Mater., May 15, 2017, https://doi.org/10.1002/adfm.201700878 Read article

Scalable and Solid-State Redox Functionalization of Transparent Single-Walled Carbon Nanotube Films for Highly Efficient and Stable Solar Cells

Scalable and Solid‐State Redox Functionalization of Transparent Single‐Walled Carbon Nanotube Films for Highly Efficient and Stable Solar Cells

A scalable and room-temperature solid-state redox functionalization process for single-walled carbon nanotubes with instant efficacy and high stability is reported, with the sheet resistance reaching 69.4 Ω sq−1 at 90% transparency without noticeable increase over 12 months. The redox functionalized films also serve as an antireflective layer for Si heterojunction solar cells, achieving the record-high air-stable power conversion efficiency of 14.09%.

[Full Paper]
Kehang Cui, Yang Qian, Il Jeon, Anton Anisimov, Yutaka Matsuo, Esko I. Kauppinen, Shigeo Maruyama
Adv. Energy Mater., May 12, 2017, https://doi.org/10.1002/aenm.201700449 Read article

Temperature and Electrical Poling Effects on Ionic Motion in MAPbI3 Photovoltaic Cells

Temperature and Electrical Poling Effects on Ionic Motion in MAPbI3 Photovoltaic Cells

It is proven that ionic motion is the dominant mechanism behind MAPbI3 solar cell hysteresis by investigating electrical poling effects in a wide temperature range. The power conversion efficiency reduces at low temperature, but then recovers and improves up to 20% of its original value under electrical bias. This effect is attributed to the electron extraction barrier reduction at the TiO2/MAPbI3 interface.

[Full Paper]
Annalisa Bruno, Daniele Cortecchia, Xin Yu Chin, Kunwu Fu, Pablo P. Boix, Subodh Mhaisalkar, Cesare Soci
Adv. Energy Mater., May 12, 2017, https://doi.org/10.1002/aenm.201700265 Read article

Electrospray-Assisted Fabrication of Moisture-Resistant and Highly Stable Perovskite Solar Cells at Ambient Conditions

Electrospray‐Assisted Fabrication of Moisture‐Resistant and Highly Stable Perovskite Solar Cells at Ambient Conditions

Fabricating highly stable perovskite solar cells using a simple and scalable electrospray deposition technique at ambient condition. Perovskite film formed by electrospray is uniform, smooth, and moisture-resistant in nature, making the cells fight against moisture without the use of additives or encapsulation.

[Full Paper]
Shalinee Kavadiya, Dariusz M. Niedzwiedzki, Su Huang, Pratim Biswas
Adv. Energy Mater., May 12, 2017, https://doi.org/10.1002/aenm.201700210 Read article

New Acetylene-Bridged 9,10-Conjugated Anthracene Sensitizers: Application in Outdoor and Indoor Dye-Sensitized Solar Cells

New Acetylene‐Bridged 9,10‐Conjugated Anthracene Sensitizers: Application in Outdoor and Indoor Dye‐Sensitized Solar Cells

New anthracene-based sensitizers are designed for the application in dye-sensitized solar cells. Alteration of alkyl to alkoxy chain and incorporation of electron deficient moieties in these dyes (TY3, TY4, and TY6) are found to play a significant role in the efficiency enhancement. The dye TY6 showed best efficiency of 8.08% and 28.56% under 1 sun and T5 illumination, respectively.

[Full Paper]
Yogesh S. Tingare, Nguyễn So'n Vinh, Hsien-Hsin Chou, Yu-Chieh Liu, Yean-San Long, Teng-Chun Wu, Tzu-Chien Wei, Chen-Yu Yeh
Adv. Energy Mater., May 12, 2017, https://doi.org/10.1002/aenm.201700032 Read article

Molecular Engineered Hole-Extraction Materials to Enable Dopant-Free, Efficient p-i-n Perovskite Solar Cells

Molecular Engineered Hole‐Extraction Materials to Enable Dopant‐Free, Efficient p‐i‐n Perovskite Solar Cells

Two hole-extraction materials (HEMs)—TPP-OMeTAD and TPP-SMeTAD—are developed for the construction of p-i-n perovskite solar cells (PVSCs). Through replacing the oxygen atom with sulfur at the arylamine terminal substituents, TPP-SMeTAD exhibits superior energetics, charge extraction and trap passivation capabilities to perovskite, over those of TPP-OMeTAD. It leads to improved photovoltaic performance and reduced hysteresis in TPP-SMeTAD based p-i-n PVSCs.

[Communication]
Huanle Chen, Weifei Fu, Chuyi Huang, Zhongqiang Zhang, Shuixing Li, Feizhi Ding, Minmin Shi, Chang-Zhi Li, Alex K.-Y. Jen, Hongzheng Chen
Adv. Energy Mater., May 12, 2017, https://doi.org/10.1002/aenm.201700012 Read article

Synergetic Effect of Chloride Doping and CH3NH3PbCl3 on CH3NH3PbI3−xClx Perovskite-Based Solar Cells

Synergetic Effect of Chloride Doping and CH3NH3PbCl3 on CH3NH3PbI3−xClx Perovskite‐Based Solar Cells

Doped perovskites: A serial of CH3NH3PbI3−xClx perovskites with fixed 1:3 molar ratio of Pb to halide are investigated. The small amount of Cl doping affects the crystallinity and grain size of the perovskite crystal, achieving a power conversion efficiency of 17.44 %. In contrast, the excessive CH3NH3PbCl3 perovskite in CH3NHPbI3−xClx (x>0.33) can retard the electron transfer and lowers the performance.

[Communication]
Feng Xu, Taiyang Zhang, Ge Li, Yixin Zhao
ChemSusChem, May 11, 2017, https://doi.org/10.1002/cssc.201700487 Read article

Pyrrolo[3,2-b]pyrrole as the Central Core of the Electron Donor for Solution-Processed Organic Solar Cells

Pyrrolo[3,2‐b]pyrrole as the Central Core of the Electron Donor for Solution‐Processed Organic Solar Cells

Small molecules for organic solar cells: Three new small-molecule acceptor–donor–acceptor (A-D-A) compounds with a tetraaryl-1,4-dihydropyrrolo[3,2-b]pyrrole as the central building block have been synthesized and fully characterized. These molecules present high thermal stability and suitable HOMO–LUMO energy levels. The bulk heterojunction organic solar cells deliver an open-circuit voltage of 0.99 V.

[Full Paper]
Rocío Domínguez, Núria F. Montcada, Pilar de la Cruz, Emilio Palomares, Fernando Langa
ChemPlusChem, May 11, 2017, https://doi.org/10.1002/cplu.201700158 Read article

Understanding and Eliminating Hysteresis for Highly Efficient Planar Perovskite Solar Cells

Understanding and Eliminating Hysteresis for Highly Efficient Planar Perovskite Solar Cells

Through detailed characterizations, it is identified that the current density-voltage hysteresis of planar perovskite solar cells using low-temperature atomic-layer deposited SnO2 electron selective layers originates from the poor-electrical conductivity of the SnO2 layers. A facile low-temperature thermal annealing in ambient air can effectively reduce the degrees of the hysteresis and improve the power conversion efficiency of planar perovskite solar cells.

[Full Paper]
Changlei Wang, Chuanxiao Xiao, Yue Yu, Dewei Zhao, Rasha A. Awni, Corey R. Grice, Kiran Ghimire, Danae Constantinou, Weiqiang Liao, Alexander J. Cimaroli, Pei Liu, Jing Chen, Nikolas J. Podraza, Chun-Sheng Jiang, Mowafak M. Al-Jassim, Xingzhong Zhao, Yanfa Yan
Adv. Energy Mater., May 11, 2017, https://doi.org/10.1002/aenm.201700414 Read article

Multistep Photoluminescence Decay Reveals Dissociation of Geminate Charge Pairs in Organolead Trihalide Perovskites

Multistep Photoluminescence Decay Reveals Dissociation of Geminate Charge Pairs in Organolead Trihalide Perovskites

Ultrafast time-resolved measurements of methylammonium lead halide perovskite photoluminescence enable separation of the fast and slow decay components attributed to the geminate and nongeminate charge carrier recombination. The geminate recombination dominates at very low excitation intensities during initial several tens of picoseconds and reveals the gradual spatial separation of photogenerated weakly bound geminate charge pairs.

[Full Paper]
Ramūnas Augulis, Marius Franckevičius, Vytautas Abramavičius, Darius Abramavičius, Shaik Mohammed Zakeeruddin, Michael Grätzel, Vidmantas Gulbinas
Adv. Energy Mater., May 11, 2017, https://doi.org/10.1002/aenm.201700405 Read article

Enhancing Lifetime and Efficiency of Organic Solar Cell by Applying an In Situ Synthesized Low-Crystalline ZnO Layer

Enhancing Lifetime and Efficiency of Organic Solar Cell by Applying an In Situ Synthesized Low‐Crystalline ZnO Layer

Long live the solar cell: By introducing an in situ synthesized low-crystalline (amorphous) ZnO (LC-ZnO) layer between the cathode and the active layer of a PCPDTBT:CdSe solar cell, the power conversion efficiency is improved up to 70 % and the device lifetime reaches 180 days without any encapsulation, which is the highest lifetime achieved for polymer-based solar cells with direct configuration.

[Communication]
Farzaneh Arabpour Roghabadi, Vahid Ahmadi, Bahram Abdollahi Nejand, Karim Oniy Aghmiuni
ChemSusChem, May 10, 2017, https://doi.org/10.1002/cssc.201700259 Read article

Low-Temperature Modification of ZnO Nanoparticles Film for Electron-Transport Layers in Perovskite Solar Cells

Low‐Temperature Modification of ZnO Nanoparticles Film for Electron‐Transport Layers in Perovskite Solar Cells

A special treatment: We report an effective surface-modification method of a room-temperature processed ZnO nanoparticles layer as an alternative to the TiO2 electron-transport layer. A combination of simple UV exposure and nitric acid treatment effectively removes the hydroxyl group and passivates surface defects in ZnO nanoparticles.

[Full Paper]
Gill Sang Han, Hyun-Woo Shim, Seongha Lee, Matthew L. Duff, Jung-Kun Lee
ChemSusChem, May 10, 2017, https://doi.org/10.1002/cssc.201700029 Read article

The Influence of Operation Temperature and Variations of the Illumination on the Performance of Integrated Photoelectrochemical Water-Splitting Devices

The Influence of Operation Temperature and Variations of the Illumination on the Performance of Integrated Photoelectrochemical Water‐Splitting Devices

There's no such thing as bad weather: Photovoltaic-biased electrochemical (PV-EC) devices based on multi-junction thin-film silicon solar cells are investigated under conditions different from standard test conditions and similar to conditions obtained outdoors. We discuss how the performance of the PV-EC device is influenced by spectral quality, illumination intensity and operation temperature.

[Article]
Katharina Welter, Vladimir Smirnov, Jan-Philipp Becker, Patrick Borowski, Sascha Hoch, Artjom Maljusch, Wolfram Jaegermann, Friedhelm Finger
ChemElectroChem, May 10, 2017, https://doi.org/10.1002/celc.201700112 Read article

Self-Organization of Polymer Additive, Poly(2-vinylpyridine) via One-Step Solution Processing to Enhance the Efficiency and Stability of Polymer Solar Cells

Self‐Organization of Polymer Additive, Poly(2‐vinylpyridine) via One‐Step Solution Processing to Enhance the Efficiency and Stability of Polymer Solar Cells

Nonconjugated polymer additives (nPAs) are investigated for highly efficient and stable polymer solar cells (PSCs). The poly(2-vinylpyridine) (P2VP) nPA self-assembles vertically on the ZnO surface via a single coating process for the deposition of active materials. The self-assembled P2VP reduces the work function and surface defect density of ZnO, which leads to efficient and stable PSCs with up to 11.14% efficiency.

[Full Paper]
Wonho Lee, Seonju Jeong, Changyeon Lee, Gibok Han, Changsoon Cho, Jung-Yong Lee, Bumjoon J. Kim
Adv. Energy Mater., May 10, 2017, https://doi.org/10.1002/aenm.201602812 Read article

Electrostatic Design of 3D Covalent Organic Networks

Electrostatic Design of 3D Covalent Organic Networks

The electrostatic design of 3D covalent organic networks is presented as an innovative strategy to mimic donor–acceptor heterojunctions. Periodic arrangements of polar building blocks are used to locally shift the energies of electronic states and to spatially confine frontier wavefunctions. In this way, a driving force for exciton dissociation is realized without the need for using distinct semiconducting units.

[Communication]
Veronika Obersteiner, Andreas Jeindl, Johannes Götz, Aurelie Perveaux, Oliver T. Hofmann, Egbert Zojer
Adv. Mater., May 10, 2017, https://doi.org/10.1002/adma.201700888 Read article

Pseudohalide-Exchanged Quantum Dot Solids Achieve Record Quantum Efficiency in Infrared Photovoltaics

Pseudohalide‐Exchanged Quantum Dot Solids Achieve Record Quantum Efficiency in Infrared Photovoltaics

Pseudohalogens in solar cells are applied and the performance is increased by reducing trap densities and implementing thick colloidal quantum dot (CQD) films. The pseudohalide-exchanged CQD films have four times lower trap state density than the controls, as seen in field-effect transistor (FET) studies. This results in an external quantum efficiency of 80% at the infrared excitonic peak, the highest reported in CQD photovoltaics.

[Communication]
Bin Sun, Oleksandr Voznyy, Hairen Tan, Philipp Stadler, Mengxia Liu, Grant Walters, Andrew H. Proppe, Min Liu, James Fan, Taotao Zhuang, Jie Li, Mingyang Wei, Jixian Xu, Younghoon Kim, Sjoerd Hoogland, Edward H. Sargent
Adv. Mater., May 10, 2017, https://doi.org/10.1002/adma.201700749 Read article

An Open-Circuit Voltage and Power Conversion Efficiency Study of Fullerene Ternary Organic Solar Cells Based on Oligomer/Oligomer and Oligomer/Polymer

An Open‐Circuit Voltage and Power Conversion Efficiency Study of Fullerene Ternary Organic Solar Cells Based on Oligomer/Oligomer and Oligomer/Polymer

Tunable open-circuit voltages are realized in ternary organic solar cells based on oligomer/oligomer (S2/S7) and oligomer/polymer (S2/P11) as the photoactive layer, which can be correlated to the charge transfer state of these photoactive layers. It is interesting to note that the ternary systems of S2:S7:PC71BM and S2:P11:PC71BM exhibit higher power conversion efficiencies than their binary counterparts.

[Communication]
Guichuan Zhang, Cheng Zhou, Chen Sun, Xiaoe Jia, Baomin Xu, Lei Ying, Fei Huang, Yong Cao
Macromol. Rapid Commun., May 09, 2017, https://doi.org/10.1002/marc.201700090 Read article

Indium-Free Perovskite Solar Cells Enabled by Impermeable Tin-Oxide Electron Extraction Layers

Indium‐Free Perovskite Solar Cells Enabled by Impermeable Tin‐Oxide Electron Extraction Layers

Corrosive precursors used to prepare organo-metal-halide perovskite photoactive layers usually prevent the application of ultrathin metal layers in semitransparent bottom electrodes. Tin-oxide/metal/tin-oxide electrode is introduced, where the ultrathin metal layer is shielded by impermeable tin-oxide (SnOx) grown by atomic layer deposition. The SnOx concomitantly functions as an electron extraction layer that affords a high open circuit voltage of 1.17 V.

[Communication]
Ting Hu, Tim Becker, Neda Pourdavoud, Jie Zhao, Kai Oliver Brinkmann, Ralf Heiderhoff, Tobias Gahlmann, Zengqi Huang, Selina Olthof, Klaus Meerholz, Daniel Többens, Baochang Cheng, Yiwang Chen, Thomas Riedl
Adv. Mater., May 08, 2017, https://doi.org/10.1002/adma.201606656 Read article

Insights into the Mechanism of a Covalently Linked Organic Dye–Cobaloxime Catalyst System for Dye-Sensitized Solar Fuel Devices

Insights into the Mechanism of a Covalently Linked Organic Dye–Cobaloxime Catalyst System for Dye‐Sensitized Solar Fuel Devices

A catalyst that wants to dye! An organic dye–cobaloxime catalyst system based on mesoporous NiO is prepared by a facile click reaction for use in a dye-sensitized solar fuel device. The dye–catalyst system is systematically investigated and a working mechanism on the photocathode is proposed.

[Full Paper]
Palas Baran Pati, Lei Zhang, Bertrand Philippe, Ricardo Fernández-Terán, Sareh Ahmadi, Lei Tian, Håkan Rensmo, Leif Hammarström, Haining Tian
ChemSusChem, May 03, 2017, https://doi.org/10.1002/cssc.201700285 Read article

Two Well-Miscible Acceptors Work as One for Efficient Fullerene-Free Organic Solar Cells

Two Well‐Miscible Acceptors Work as One for Efficient Fullerene‐Free Organic Solar Cells

Ternary organic solar cells show over 11% power conversion efficiency by using two compatible nonfullerene acceptors with complementary absorption spectra, similar chemical structures, and similar lowest unoccupied molecular orbital levels. Broadened absorption, similar output voltages, and compatible morphology are achieved simultaneously, demonstrating a promising strategy to improve the performance of OSCs.

[Communication]
Runnan Yu, Shaoqing Zhang, Huifeng Yao, Bing Guo, Sunsun Li, Hao Zhang, Maojie Zhang, Jianhui Hou
Adv. Mater., May 03, 2017, https://doi.org/10.1002/adma.201700437 Read article

Improved Performance of All-Polymer Solar Cells Enabled by Naphthodiperylenetetraimide-Based Polymer Acceptor

Improved Performance of All‐Polymer Solar Cells Enabled by Naphthodiperylenetetraimide‐Based Polymer Acceptor

A new polymer acceptor NDP-V is designed and applied in all-polymer solar cells (all-PSCs). With this polymer acceptor, a new record power conversion efficiency of 8.59% has been achieved for all-PSCs, with an open-circuit voltage (V oc) of 0.74 V, a short-circuit current density (J sc) of 17.07 mA cm−2, and a high fill factor (FF) of 0.67.

[Communication]
Yikun Guo, Yunke Li, Omar Awartani, Han Han, Jingbo Zhao, Harald Ade, He Yan, Dahui Zhao
Adv. Mater., May 03, 2017, https://doi.org/10.1002/adma.201700309 Read article

Poly(4-Vinylpyridine)-Based Interfacial Passivation to Enhance Voltage and Moisture Stability of Lead Halide Perovskite Solar Cells

Poly(4‐Vinylpyridine)‐Based Interfacial Passivation to Enhance Voltage and Moisture Stability of Lead Halide Perovskite Solar Cells

Moisture and charge barrier: We show the surface modification of a perovskite film with a solution-processable hydrophobic polymer (poly(4-vinylpyridine), PVP), which passivates the undercoordinated lead atoms (on the surface of perovskite) by its pyridine Lewis base side chains and eliminates surface-trap states and non-radiative recombination, and acts as an electron barrier between the perovskite and hole-transport layer.

[Full Paper]
Bhumika Chaudhary, Ashish Kulkarni, Ajay Kumar Jena, Masashi Ikegami, Yosuke Udagawa, Hideyuki Kunugita, Kazuhiro Ema, Tsutomu Miyasaka
ChemSusChem, May 02, 2017, https://doi.org/10.1002/cssc.201700271 Read article

Self-Assembled Liquid-Crystalline Ion Conductors in Dye-Sensitized Solar Cells: Effects of Molecular Sensitizers on Their Performance

Self‐Assembled Liquid‐Crystalline Ion Conductors in Dye‐Sensitized Solar Cells: Effects of Molecular Sensitizers on Their Performance

Bright future: Nanostructured liquid crystals forming self-assembled two-dimensional ion-transport pathways have been applied as electrolytes in dye-sensitized solar cells (DSSCs; see figure). DSSCs based on these liquid-crystalline (LC) electrolytes and organic dye sensitizers show more efficient energy conversion than LC-DSSCs based on ruthenium metal–organic dyes.

[Full Paper]
Daniel Högberg, Bartolome Soberats, Masafumi Yoshio, Yurika Mizumura, Satoshi Uchida, Lars Kloo, Hiroshi Segawa, Takashi Kato
ChemPlusChem, April 26, 2017, https://doi.org/10.1002/cplu.201700099 Read article

Effect of Isomeric Structures on Photovoltaic Performance of D–A Copolymers

Effect of Isomeric Structures on Photovoltaic Performance of D–A Copolymers

The effect of isomeric structures on photovoltaic performance is studied. PBDTiBTTP solar cells present less charge recombination, giving a higher power conversion efficiency (PCE) of 6.51% with much higher short-circuit current (Jsc) and fill factor (FF).

[Communication]
Fangyuan Xie, Dan He, Han Pan, Jiaxing Jiang, Liming Ding
Macromol. Rapid Commun., April 19, 2017, https://doi.org/10.1002/marc.201700074 Read article

Low-Temperature Plasma Processing of Platinum Porphyrins for the Development of Metal Nanostructured Layers

Low‐Temperature Plasma Processing of Platinum Porphyrins for the Development of Metal Nanostructured Layers

A low-temperature approach for the development of tunable optical filters and platinum nanoelectrodes is presented. The fabrication is carried out by vacuum and plasma processing of the platinum octaethylporphyrin precursor. Nanostructured counterelectrodes have been tested within an excitonic solar cell demonstrating a superior catalytic performance.

[Full Paper]
Alejandro Nicolas Filippin, Juan Ramon Sanchez-Valencia, Jesús Idígoras, Manuel Macias-Montero, Maria Alcaire, Francisco Javier Aparicio, Juan Pedro Espinos, Carmen Lopez-Santos, Fabian Frutos, Angel Barranco, Juan Antonio Anta, Ana Borras
Adv. Mater. Interfaces, April 19, 2017, https://doi.org/10.1002/admi.201601233 Read article

Designing Squaraines to Control Charge Injection and Recombination Processes in NiO-based Dye-Sensitized Solar Cells

Designing Squaraines to Control Charge Injection and Recombination Processes in NiO‐based Dye‐Sensitized Solar Cells

Symmetry matters: New squaraine sensitizers (SQs) for NiO p-type dye-sensitized solar cells (DSSCs) are presented. By changing their symmetry and number of anchoring groups, the impact on the charge injection/recombination properties of the device is exerted, as proven by electrochemical impedance spectroscopy. Additionally, tandem DSSCs, which show a panchromatic light-harvesting ranging from 300 to ∼750 nm are also presented.

[Full Paper]
Oliver Langmar, Davide Saccone, Anna Amat, Simona Fantacci, Guido Viscardi, Claudia Barolo, Rubén D. Costa, Dirk M. Guldi
ChemSusChem, April 13, 2017, https://doi.org/10.1002/cssc.201700152 Read article

Application of Azulene in Constructing Organic Optoelectronic Materials: New Tricks for an Old Dog

Application of Azulene in Constructing Organic Optoelectronic Materials: New Tricks for an Old Dog

Aromatic notes: The general strategies and representative synthetic methods for the preparation and functionalization of azulene and its derivatives are presented in this Minireview to give valuable insights into the development of azulene-based optoelectronic materials (see figure). The application of azulene-based conjugated molecules/polymers in organic field-effect transistors and solar cells is also discussed.

[Minireview]
Hanshen Xin, Xike Gao
ChemPlusChem, April 11, 2017, https://doi.org/10.1002/cplu.201700039 Read article

Squaraine-Based Polymers: Toward Optimized Structures for Optoelectronic Devices

Squaraine‐Based Polymers: Toward Optimized Structures for Optoelectronic Devices

A novel polymer semiconductor based on squaric acid is successfully prepared through polycondensation reaction. Newly developed polysquaraine is active as p-channel semiconductor in thin-film transistors showing decent p-type mobility up to 5 × 10−4 cm2 V−1 s−1. Bulk heterojunction solar cells with power conversion efficiency up to 0.86% are also fabricated from the blends of polysquaraine and fullerene derivative PC71BM.

[Full Paper]
Alessandra Broggi, Hyungsug Kim, Jihye Jung, Maria Paola Bracciale, Maria Laura Santarelli, Choongik Kim, Assunta Marrocchi
Macromol. Chem. Phys., April 06, 2017, https://doi.org/10.1002/macp.201600487 Read article

Ethynyl-Linked Donor-π-Acceptor Boron Dipyrromethenes for Panchromatic Dye-Sensitized Solar Cells

Ethynyl‐Linked Donor‐π‐Acceptor Boron Dipyrromethenes for Panchromatic Dye‐Sensitized Solar Cells

Two boron dipyrromethene (BODIPY) derivatives were prepared as functional materials for applications in dye-sensitized solar cells (DSSCs). These compounds consist of a donor-π-acceptor skeleton in which an electron donor and an electron acceptor/anchoring group are introduced to the opposite C2 and C6 positions of a BODIPY core via an ethynyl linker (compounds DN1 and DN2).

[Full Paper]
Wen-Jing Shi, Takumi Kinoshita, Dennis K. P. Ng
Asian J. Org. Chem., April 05, 2017, https://doi.org/10.1002/ajoc.201700121 Read article

Bandgap-Tuning in Triple-Chalcogenophene Polymer Films by Thermal Annealing

Bandgap‐Tuning in Triple‐Chalcogenophene Polymer Films by Thermal Annealing

The morphological, crystalline, and optoelectronic responses of a novel triple-chalcogenophene polymer are characterized. The presence of group-16 elements provides the system with thermal-bandgap-tuning-properties that allows for partnership with a broad range of photoactive donors/acceptors in organic solar devices. The chemically engineered combination of elements enables the use of low-bandgap polymer with postpolymerization adjusting properties along with easy processability requirements.

[Communication]
Daniel Moseguí González, Konstantinos N. Raftopoulos, Gang He, Christine M. Papadakis, Alex Brown, Eric Rivard, Peter Müller-Buschbaum
Macromol. Rapid Commun., March 29, 2017, https://doi.org/10.1002/marc.201700065 Read article

Pyridyl- and Picolinic Acid Substituted Zinc(II) Phthalocyanines for Dye-Sensitized Solar Cells

Pyridyl‐ and Picolinic Acid Substituted Zinc(II) Phthalocyanines for Dye‐Sensitized Solar Cells

Fine-tuning through the anchor: A series of seven tri-tert-butyl zinc(II) phthalocyanines substituted on the periphery with pyridyl, carboxyl, or picolinic acid anchoring groups (see figure) were prepared and their photovoltaic properties in dye-sensitized solar cells investigated.

[Communication]
Juan Suanzes Pita, Maxence Urbani, Giovanni Bottari, Mine Ince, Sangeeta Amit Kumar, Aravind Kumar Chandiran, Jun-Ho Yum, Michael Grätzel, Mohammad Khaja Nazeeruddin, Tomas Torres
ChemPlusChem, March 29, 2017, https://doi.org/10.1002/cplu.201700048 Read article

Synthesis and Characterization of a Soluble A–D–A Molecule Containing a 2D Conjugated Selenophene-Based Side Group for Organic Solar Cells

Synthesis and Characterization of a Soluble A–D–A Molecule Containing a 2D Conjugated Selenophene‐Based Side Group for Organic Solar Cells

The synthesis and characterization of a new A–D–A-type molecule (SeBDTDPP) containing a conjugated two-dimensional benzodithiophene donor is reported.

[Communication]
Yurim Shin, Chang Eun Song, Woo-Hyung Lee, Sang Kyu Lee, Won Suk Shin, In-Nam Kang
Macromol. Rapid Commun., March 21, 2017, https://doi.org/10.1002/marc.201700016 Read article

Solution-Processable Hyperbranched Conjugated Polymer Nanoparticles Based on C3h-Symmetric Benzotrithiophene for Polymer Solar Cells

Solution‐Processable Hyperbranched Conjugated Polymer Nanoparticles Based on C3h‐Symmetric Benzotrithiophene for Polymer Solar Cells

C3h-symmetric benzotrithiophene-based hyperbranched conjugated polymer nanoparticles (BTT-HCPNs) with tunable particle sizes are prepared via Stille miniemulsion polymerization for the first time. Comparing with the corresponding star-shaped small molecule (C3h-BTT core with three diketopyrrolopyrrole arms), solution-processable BTT-HCPNs show redshifted and broader absorption spectra and narrower bandgaps, leading to higher power conversion efficiencies for solar cells based on BTT-HCPNs/PC71BM.

[Communication]
Xiaofu Wu, Zijian Zhang, Hao Hang, Yonghong Chen, Yuxiang Xu, Hui Tong, Lixiang Wang
Macromol. Rapid Commun., February 21, 2017, https://doi.org/10.1002/marc.201700001 Read article

Emerging of Inorganic Hole Transporting Materials For Perovskite Solar Cells

Emerging of Inorganic Hole Transporting Materials For Perovskite Solar Cells

Recently, hole transport materials based on inorganic metal oxides have rapidly increased in place of organic materials like spiro due to stability, ease of synthesis and low cost for perovskite solar cells. The device efficiency using inorganic hole transport materials have crossed 19% which is on par with spiro based devices. This review covers recent developments on inorganic based hole transport materials for perovskite solar cells.

[Personal Account]
Ramireddy Rajeswari, Madoori Mrinalini, Seelam Prasanthkumar, Lingamallu Giribabu
Chem. Rec., January 04, 2017, https://doi.org/10.1002/tcr.201600117 Read article

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