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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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Efficient Organic Solar Cells with Non-Fullerene Acceptors

Efficient Organic Solar Cells with Non‐Fullerene Acceptors

Fullerene-free organic solar cells (OSCs) have made great progress in recent years with efficiencies surpassing 12%. In this Review, recent high-performance non-fullerene acceptors developed for OSCs are summarized, mainly correlating factors like absorption, energy loss and morphology of new materials to their correspondent photovoltaic performance. The perspectives for fullerene-free OSCs with efficiency of 15% are briefly discussed.

[Review]
Shuixing Li, Wenqing Liu, Chang-Zhi Li, Minmin Shi, Hongzheng Chen
Small, July 24, 2017, https://doi.org/10.1002/smll.201701120 Read article

Homogenous Alloys of Formamidinium Lead Triiodide and Cesium Tin Triiodide for Efficient Ideal-Bandgap Perovskite Solar Cells

Homogenous Alloys of Formamidinium Lead Triiodide and Cesium Tin Triiodide for Efficient Ideal‐Bandgap Perovskite Solar Cells

Thin-film photovoltaics: Significant progress has been made on the formation of mixed cation-stablized Pb–Sn alloy perovskite materials made from FAPbI3 and CsSnI3 halide perovskites (FA=formamidinium). Solar cells based on an alloy in this system with an ideal bandgap show power conversion efficiencies up to 14.6 %.

[Communication]
Yingxia Zong, Ning Wang, Lin Zhang, Ming-Gang Ju, Xiao Cheng Zeng, Xiao Wei Sun, Yuanyuan Zhou, Nitin P. Padture
Angew. Chem. Int. Ed., July 24, 2017, https://doi.org/10.1002/anie.201705965 Read article

High Efficiency Nonfullerene Polymer Solar Cells with Thick Active Layer and Large Area

High Efficiency Nonfullerene Polymer Solar Cells with Thick Active Layer and Large Area

The nonfullerene polymer solar cells based on a wide bandgap polymer PTZ1 and a narrow bandgap acceptor IDIC exhibit weak active layer thickness and area dependence with the optimal power conversion efficiency of 11.5%, indicating that the blend of PTZ1/IDIC is potential for the practical application of polymer solar cells.

[Communication]
Bing Guo, Wanbin Li, Xia Guo, Xiangyi Meng, Wei Ma, Maojie Zhang, Yongfang Li
Adv. Mater., July 24, 2017, https://doi.org/10.1002/adma.201702291 Read article

Understanding the Limiting Factors of Solvent-Annealed Small-Molecule Bulk-Heterojunction Organic Solar Cells from a Chemical Perspective

Understanding the Limiting Factors of Solvent‐Annealed Small‐Molecule Bulk‐Heterojunction Organic Solar Cells from a Chemical Perspective

Crystallite growth energetics: We give a detailed account of the limiting factors of a solvent-annealed bulk-heterojunction small-molecule organic solar cell. A mechanism for the formation of crystalline domains of donor molecules in the active layer is proposed, and microstructure features are related to the JV characteristics of the devices. The energetics of crystallite growth determine the establishment of a JV characteristics–structure relationship.

[Full Paper]
Daniel Fernandez, Aurelien Viterisi, Vijay Challuri, James W. Ryan, Eugenia Martinez-Ferrero, Francesc Gispert-Guirado, Marta Martinez, Eduardo Escudero, Caterina Stenta, Lluis F. Marsal, Emilio Palomares
ChemSusChem, July 21, 2017, https://doi.org/10.1002/cssc.201700440 Read article

Polymer Main-Chain Substitution Effects on the Efficiency of Nonfullerene BHJ Solar Cells

Polymer Main‐Chain Substitution Effects on the Efficiency of Nonfullerene BHJ Solar Cells

Swapping main-chain substituents in a set of analogous wide-bandgap polymer donors is shown to result in gradual bulk-heterojunction (BHJ) device performance improvements when the polymers are combined with the nonfullerene acceptor “ITIC”. The gradual improvements result from better charge generation, collection, and reduced geminate and bimolecular recombination, leading to polymer-nonfullerene BHJ solar cells with power conversion efficiencies as high as 9.8%.

[Full Paper]
Yuliar Firdaus, Luna Pratali Maffei, Federico Cruciani, Michael A. Müller, Shengjian Liu, Sergei Lopatin, Nimer Wehbe, Guy O. Ngongang Ndjawa, Aram Amassian, Frederic Laquai, Pierre M. Beaujuge
Adv. Energy Mater., July 21, 2017, https://doi.org/10.1002/aenm.201700834 Read article

Modulating the Molecular Packing and Nanophase Blending via a Random Terpolymerization Strategy toward 11% Efficiency Nonfullerene Polymer Solar Cells

Modulating the Molecular Packing and Nanophase Blending via a Random Terpolymerization Strategy toward 11% Efficiency Nonfullerene Polymer Solar Cells

Over 11% efficiency random polymer-based nonfullerene solar cell is realized on the donor family of PTPTI-Tx containing various thiophene/bithiophene ratios in the backbone. A small-scale phase separation with an increased fraction of face-on oriented crystallites observed in the PTPTI-T70:m-ITIC blend enables efficient exciton dissociation and charge transport, thereby inducing a remarkably enhanced JSC of 17.12 mA cm−2 through this system.

[Full Paper]
Shanshan Chen, Hye Jin Cho, Jungho Lee, Yankang Yang, Zhi-Guo Zhang, Yongfang Li, Changduk Yang
Adv. Energy Mater., July 20, 2017, https://doi.org/10.1002/aenm.201701125 Read article

Ternary Organic Solar Cells with Minimum Voltage Losses

Ternary Organic Solar Cells with Minimum Voltage Losses

Ternary solar cells with minimum voltage losses around 0.25 eV are designed by combining two donor polymers with same bulk and interface energy which make the hole transportation like in one donor polymer. The voltage losses were minimized due to EICT+EICT−, where the trade-off between enhancing of charge generation and charge recombination by ICT states arrives at sweet spot.

[Full Paper]
Chuanfei Wang, Wei Zhang, Xiangyi Meng, Jonas Bergqvist, Xianjie Liu, Zewdneh Genene, Xiaofeng Xu, Arkady Yartsev, Olle Inganäs, Wei Ma, Ergang Wang, Mats Fahlman
Adv. Energy Mater., July 20, 2017, https://doi.org/10.1002/aenm.201700390 Read article

Multidimensional Anodized Titanium Foam Photoelectrode for Efficient Utilization of Photons in Mesoscopic Solar Cells

Multidimensional Anodized Titanium Foam Photoelectrode for Efficient Utilization of Photons in Mesoscopic Solar Cells

Multidimensional anodized titanium foams with hierarchical architecture are synthesized and applied as the photoelectrodes in mesoscopic solar cells. 1D TiO2 nanotube arrays on 3D metallic Ti enable efficient light harvesting and charge collection due to their carefully designed structural properties. A remarkable photocurrent density up to 22 mA cm−2 is obtained in dye-sensitized solar cells employing a quasi-solid electrolyte.

[Communication]
Jin Soo Kang, Hyelim Choi, Jin Kim, Hyeji Park, Jae-Yup Kim, Jung-Woo Choi, Seung-Ho Yu, Kyung Jae Lee, Yun Sik Kang, Sun Ha Park, Yong-Hun Cho, Jun-Ho Yum, David C. Dunand, Heeman Choe, Yung-Eun Sung
Small, July 19, 2017, https://doi.org/10.1002/smll.201701458 Read article

Benzoyl Peroxide as an Efficient Dopant for Spiro-OMeTAD in Perovskite Solar Cells

Benzoyl Peroxide as an Efficient Dopant for Spiro‐OMeTAD in Perovskite Solar Cells

That′s so dope! A low-cost and easy-fabrication technique is developed to enhance the conductivity and holeextraction ability of spiro-OMeTAD by doping it with commercially available benzoyl peroxide (BPO). The BPO-doped spiro-OMeTAD layer shows high conductivity and is an efficient hole-extraction material for CH3NH3PbI3, thus greatly enhancing the charge transfer and the power conversion efficiency of the device.

[Full Paper]
Qiuju Liu, Lisheng Fan, Qin'e Zhang, An'an Zhou, Baozeng Wang, Hua Bai, Qingyong Tian, Bin Fan, Tongyi Zhang
ChemSusChem, July 19, 2017, https://doi.org/10.1002/cssc.201700872 Read article

Femtosecond Charge-Injection Dynamics at Hybrid Perovskite Interfaces

Femtosecond Charge‐Injection Dynamics at Hybrid Perovskite Interfaces

Overcoming obstacles: Ultrafast photoinduced carrier dynamics behind state-of-the-art, efficient perovskite interfaces are monitored in the near-IR spectral region. Electron and hole injection occur within a few hundreds of femtoseconds in optimized mesoporous TiO2/perovskite and hole transporting material/perovskite interfaces (see figure).

[Article]
Giulia Grancini, Daniele Viola, Yonghui Lee, Michael Saliba, Sanghyun Paek, Kyung Taek Cho, Simonetta Orlandi, Marco Cavazzini, Fernando Fungo, Mohammad I. Hossain, Abdelhak Belaidi, Nouar Tabet, Gianluca Pozzi, Giulio Cerullo, Mohammad Khaja Nazeeruddin
ChemPhysChem, July 19, 2017, https://doi.org/10.1002/cphc.201700492 Read article

Side Group Engineering of Small Molecular Acceptors for High-Performance Fullerene-Free Polymer Solar Cells: Thiophene Being Superior to Selenophene

Side Group Engineering of Small Molecular Acceptors for High‐Performance Fullerene‐Free Polymer Solar Cells: Thiophene Being Superior to Selenophene

Two new small molecular acceptors (SMAs), ITCPTC-Th and ITCPTC-Se, are designed and synthesized to investigate thiophene and selenophene side group substituted effects. A polymer solar cell (PSC) based on ITCPTC-Th achieves high power conversion efficiency (PCE) of 10.61%, which are significantly higher than that of ITCPTC-Se-based PSC. This confirms that thiophene is superior to selenophene as side group of ITIC-like SMAs.

[Full Paper]
Wei Gao, Qiaoshi An, Ruijie Ming, Dongjun Xie, Kailong Wu, Zhenghui Luo, Yang Zou, Fujun Zhang, Chuluo Yang
Adv. Funct. Mater., July 19, 2017, https://doi.org/10.1002/adfm.201702194 Read article

Chlorophyll-Based Organic–Inorganic Heterojunction Solar Cells

Chlorophyll‐Based Organic–Inorganic Heterojunction Solar Cells

Naturally sensitive: Solid-state chlorophyll solar cells can be used that employ a carboxylated chlorophyll derivative, methyl trans-32-carboxypyropheophorbide a, as a light-harvesting dye sensitizer chlorophyll (DSC) deposited on mesoporous TiO2, upon which four zinc hydroxylated chlorophyll derivatives are spin-coated as hole transporter chlorophylls (HTCs; see figure).

[Full Paper]
Yue Li, Wenjie Zhao, Mengzhen Li, Gang Chen, Xiao-Feng Wang, Xueqi Fu, Osamu Kitao, Hitoshi Tamiaki, Kotowa Sakai, Toshitaka Ikeuchi, Shin-ichi Sasaki
Chem. Eur. J., July 18, 2017, https://doi.org/10.1002/chem.201701858 Read article

Reducing Voltage Losses in Cascade Organic Solar Cells while Maintaining High External Quantum Efficiencies

Reducing Voltage Losses in Cascade Organic Solar Cells while Maintaining High External Quantum Efficiencies

The insertion of a thin interlayer at the D/A interface of a cascade organic solar cell leads to a reduction of the voltage losses by 180 mV, while maintaining peak external quantum efficiencies approaching 80%. A detailed analysis of the organic multilayer device with exceptionally low losses reveals a minimal driving force for charge separation and suppressed nonradiative recombination.

[Full Paper]
Vasileios C. Nikolis, Johannes Benduhn, Felix Holzmueller, Fortunato Piersimoni, Matthias Lau, Olaf Zeika, Dieter Neher, Christian Koerner, Donato Spoltore, Koen Vandewal
Adv. Energy Mater., July 18, 2017, https://doi.org/10.1002/aenm.201700855 Read article

UV radiation hardness of photovoltaic modules featuring crystalline Si solar cells with AlOx/p+-type Si and SiNy/n+-type Si interfaces

UV radiation hardness of photovoltaic modules featuring crystalline Si solar cells with AlOx/p+‐type Si and SiNy/n+‐type Si interfaces

In this study, Witteck et al. investigate UV radiation hardness of solar modules with SiN/n+-type Si and AlO/p+-type Si interface at the UV-illuminated module side. It is shown that modules with SiN/AlO passivation layer are stable and modules with SiN passivation layer degrade under UV exposure. The authors apply an analytical model and find that photons with energies above 3.4 eV de-passivate the SiN passivation interface, which increases the surface recombination velocity. The analytical model is confirmed with numerical simulations of the external quantum efficiency with Sentaurus Device.

[Rapid Research Letter]
Robert Witteck, Byungsul Min, Henning Schulte-Huxel, Hendrik Holst, Boris Veith-Wolf, Fabian Kiefer, Malte R. Vogt, Marc Köntges, Robby Peibst, Rolf Brendel
Phys. Status Solidi RRL, July 17, 2017, https://doi.org/10.1002/pssr.201700178 Read article

Highly-efficient superstrate Cu2ZnSnS4 solar cell fabricated low-cost methods

Highly‐efficient superstrate Cu2ZnSnS4 solar cell fabricated low‐cost methods

This Letter reports the successful preparation of a thin CZTS superestrate solar cell (FTO/TiO2/In2S3/Cu2ZnSnS4/graphite) with a maximum efficiency of 3.53%, which is the highest power conversion efficiency reported for this configuration and combination of materials. The solar cell was fabricated entirely by low-cost processes and eco-friendly compounds. Details of the experimental procedures are provided and the device characterization data are presented and analyzed.

[Rapid Research Letter]
M. Berruet, Y. Di Iorio, C. J. Pereyra, R. E. Marotti, M. Vázquez
Phys. Status Solidi RRL, July 17, 2017, https://doi.org/10.1002/pssr.201700144 Read article

Potential of Nonfullerene Small Molecules with High Photovoltaic Performance

Potential of Nonfullerene Small Molecules with High Photovoltaic Performance

Organic solar cells (OSCs) based on small-molecule acceptors (SMA) have very efficient charge generation and transport efficiency at relatively low energy losses of below 0.6 eV (see figure), which suggest great potential for the further improvement of OSCs. The challenges and potential of SMA-based OSCs and molecular design strategies for highly efficient SMAs will be discussed.

[Focus Review]
Wanning Li, Huifeng Yao, Hao Zhang, Sunsun Li, Jianhui Hou
Chem. Asian J., July 17, 2017, https://doi.org/10.1002/asia.201700692 Read article

Circumventing UV Light Induced Nanomorphology Disorder to Achieve Long Lifetime PTB7-Th:PCBM Based Solar Cells

Circumventing UV Light Induced Nanomorphology Disorder to Achieve Long Lifetime PTB7‐Th:PCBM Based Solar Cells

In polymer cells, a spin flip at the donor/acceptor interface after the absorption of high energy photons leads to the accumulation of electrostatic potential energy initiating a rapid destruction of the fullerene nanomorpholgy. By inducing a robust nanocrystalline ordering in the fullerene phase, PTB7-Th cells with high efficiency (≈9%) and long lifetime (>7 and >10 years for optimal and vertical orientations, respectively) are fabricated.

[Full Paper]
Quan Liu, Johann Toudert, Feng Liu, Paola Mantilla-Perez, Miguel Montes Bajo, Thomas P. Russell, Jordi Martorell
Adv. Energy Mater., July 17, 2017, https://doi.org/10.1002/aenm.201701201 Read article

Efficiency Exceeding 11% in Tandem Polymer Solar Cells Employing High Open-Circuit Voltage Wide-Bandgap π-Conjugated Polymers

Efficiency Exceeding 11% in Tandem Polymer Solar Cells Employing High Open‐Circuit Voltage Wide‐Bandgap π‐Conjugated Polymers

High performance of tandem polymer solar cells (TPSCs) with power conversion efficiencies (PCEs) up to 11.42 and 10.05% are realized by using fluorine-functionalized polymers. TPSCs with PCEs over 10% achieved open-circuit voltage (Voc) of up to 1.72 V, which is among the highest Voc observed in TPSCs to date. Furthermore, detailed analyses of TPSCs as well as guidelines for bottom cell design are demonstrated.

[Full Paper]
Seyeong Song, Kakaraparthi Kranthiraja, Jungwoo Heo, Taehyo Kim, Bright Walker, Sung-Ho Jin, Jin Young Kim
Adv. Energy Mater., July 17, 2017, https://doi.org/10.1002/aenm.201700782 Read article

Strongly Enhanced Photovoltaic Performance and Defect Physics of Air-Stable Bismuth Oxyiodide (BiOI)

Strongly Enhanced Photovoltaic Performance and Defect Physics of Air‐Stable Bismuth Oxyiodide (BiOI)

Bismuth oxyiodide (BiOI) is demonstrated to be defect-tolerant, with the bulk phase unchanged after 197 d in ambient air. In solar cells, up to 80% external quantum efficiency is achieved. The short-circuit current densities and power conversion efficiencies are nearly double previous reports of photovoltaics based on BiOI, as well as other recently-explored bismuth halides and chalcohalides.

[Communication]
Robert L. Z. Hoye, Lana C. Lee, Rachel C. Kurchin, Tahmida N. Huq, Kelvin H. L. Zhang, Melany Sponseller, Lea Nienhaus, Riley E. Brandt, Joel Jean, James Alexander Polizzotti, Ahmed Kursumović, Moungi G. Bawendi, Vladimir Bulović, Vladan Stevanović, Tonio Buonassisi, Judith L. MacManus-Driscoll
Adv. Mater., July 17, 2017, https://doi.org/10.1002/adma.201702176 Read article

Enhancing Performance of Nonfullerene Acceptors via Side-Chain Conjugation Strategy

Enhancing Performance of Nonfullerene Acceptors via Side‐Chain Conjugation Strategy

A side-chain conjugation strategy in the design of nonfullerene electron acceptors is proposed and the first example of a side-chain-conjugated fused-ring electron acceptor is presented. Polymer solar cells based on side-chain-conjugated ITIC2 show a champion power conversion efficiency of 11.0%, much higher than its counterpart ITIC1-based devices (8.54%).

[Communication]
Jiayu Wang, Wei Wang, Xiaohui Wang, Yang Wu, Qianqian Zhang, Cenqi Yan, Wei Ma, Wei You, Xiaowei Zhan
Adv. Mater., July 17, 2017, https://doi.org/10.1002/adma.201702125 Read article

Dopant-Free Hole-Transporting Materials for Stable and Efficient Perovskite Solar Cells

Dopant‐Free Hole‐Transporting Materials for Stable and Efficient Perovskite Solar Cells

Novel dopant-free hole-transporting materials for perovskite solar cells (PSCs), which exhibit an excellent power conversion efficiency of 18.9% under AM 1.5 conditions are investigated. The PSC based on FA-CN shows exceptional stability up to 500 h. The PCE collected during 1300 h is observed to remain at 65% of its initial value. This opens an avenue for efficient and stable PSCs exploring new materials.

[Communication]
Sanghyun Paek, Peng Qin, Yonghui Lee, Kyung Taek Cho, Peng Gao, Giulia Grancini, Emad Oveisi, Paul Gratia, Kasparas Rakstys, Shaheen A. Al-Muhtaseb, Christian Ludwig, Jaejung Ko, Mohammad Khaja Nazeeruddin
Adv. Mater., July 17, 2017, https://doi.org/10.1002/adma.201606555 Read article

Conjugated Small Molecule for Efficient Hole Transport in High-Performance p-i-n Type Perovskite Solar Cells

Conjugated Small Molecule for Efficient Hole Transport in High‐Performance p‐i‐n Type Perovskite Solar Cells

Conjugated molecule 4,4′-cyclohexylidenebis[N,N-bis(4-methylphenyl) benzenamine] (TAPC) has been explored to replace poly(3,4-ethylenedio-xythiophene):poly(styrenesulfonate) in perovskite solar cells. The CH3NH3PbI3 solar cells are hysteresis-free, with marginal dependence on the thickness of TAPC, and achieve a power conversion efficiency of 18.8 over 12.9% as a result of increased Jsc, Voc, and fill factor.

[Full Paper]
Liyan Yang, Feilong Cai, Yu Yan, Jinghai Li, Dan Liu, Andrew J. Pearson, Tao Wang
Adv. Funct. Mater., July 17, 2017, https://doi.org/10.1002/adfm.201702613 Read article

Discrete Iron(III) Oxide Nanoislands for Efficient and Photostable Perovskite Solar Cells

Discrete Iron(III) Oxide Nanoislands for Efficient and Photostable Perovskite Solar Cells

A photostable and efficient perovskite solar cell is presented, employing the rationally designed iron(III) oxide nanoarchitecture consisting of discrete nanoislands in situ growth on the compact underlayer as electron extraction layer. Perovskite solar cells fabricated with iron(III) oxide nanoislands exhibit high power conversion efficiency (over 18%) and promising ultraviolet light and long-term operational stabilities.

[Full Paper]
Qiang Luo, Haijun Chen, Yuze Lin, Huayun Du, Qinzhi Hou, Feng Hao, Ning Wang, Zhanhu Guo, Jinsong Huang
Adv. Funct. Mater., July 17, 2017, https://doi.org/10.1002/adfm.201702090 Read article

Precise Manipulation of Multilength Scale Morphology and Its Influence on Eco-Friendly Printed All-Polymer Solar Cells

Precise Manipulation of Multilength Scale Morphology and Its Influence on Eco‐Friendly Printed All‐Polymer Solar Cells

Precise control over the multilength scale morphology of printed all-polymer photovoltaic films by altering the concentration of a green additive is demonstrated by means of resonant soft X-ray scattering, in situ spectroscopic ellipsometry, and complementary methods. Additive-free nonfullerene devices show the best device performance due to the highest relative volume fraction of small domains and minimized length scale of large domains.

[Full Paper]
Long Ye, Yuan Xiong, Sunsun Li, Masoud Ghasemi, Nrup Balar, Johnathan Turner, Abay Gadisa, Jianhui Hou, Brendan T. O'Connor, Harald Ade
Adv. Funct. Mater., July 17, 2017, https://doi.org/10.1002/adfm.201702016 Read article

Aerosol-Jet-Assisted Thin-Film Growth of CH3NH3PbI3 Perovskites—A Means to Achieve High Quality, Defect-Free Films for Efficient Solar Cells

Aerosol‐Jet‐Assisted Thin‐Film Growth of CH3NH3PbI3 Perovskites—A Means to Achieve High Quality, Defect‐Free Films for Efficient Solar Cells

Aerosol-jet printing is applied to mitigate defects during hybrid perovskite thin film growth in an all-low temperature, solution-processing scheme. The high level of automation in the printing process also enables direct write of perovskite semiconductors on a curved surface for photovoltaic device applications. This method could find use in fabricating embedded power components.

[Full Paper]
Santanu Bag, James R. Deneault, Michael F. Durstock
Adv. Energy Mater., July 14, 2017, https://doi.org/10.1002/aenm.201701151 Read article

Synergic Interface and Optical Engineering for High-Performance Semitransparent Polymer Solar Cells

Synergic Interface and Optical Engineering for High‐Performance Semitransparent Polymer Solar Cells

An efficient electron transport layer of PF3N-2TNDI is introduced to improve the performance of PTB7-Th:PC71BM based semitransparent polymer solar cells (ST-PSCs). PF3N-2TNDI can facilitate extra photocurrent generation and promote formation of high quality ultrathin Ag transparent cathode. These combined effects eventually lead to a new performance record of 6% power conversion efficiency with the corresponding average visible transmittance of ≈30% for the polymer:fullerene based ST-PSCs, and remarkable transparency color perception and rendering properties are also realized.

[Full Paper]
Hui Shi, Ruoxi Xia, Chen Sun, Jingyang Xiao, Zhihong Wu, Fei Huang, Hin-Lap Yip, Yong Cao
Adv. Energy Mater., July 14, 2017, https://doi.org/10.1002/aenm.201701121 Read article

Role of Microstructure in Oxygen Induced Photodegradation of Methylammonium Lead Triiodide Perovskite Films

Role of Microstructure in Oxygen Induced Photodegradation of Methylammonium Lead Triiodide Perovskite Films

This work elucidates the effect of MAPbI3 film microstructure on the rate of oxygen induced photodegradation of perovskite photovoltaic devices. The degradation process is initiated at the layer surface and grain boundaries of the perovskite layer and progresses into the interior of the grains. As a result, films consisting of small irregular grains degrade much faster than those with large uniform grains.

[Full Paper]
Qing Sun, Paul Fassl, David Becker-Koch, Alexandra Bausch, Boris Rivkin, Sai Bai, Paul E. Hopkinson, Henry J. Snaith, Yana Vaynzof
Adv. Energy Mater., July 14, 2017, https://doi.org/10.1002/aenm.201700977 Read article

Accelerated Optimization of TiO2/Sb2Se3 Thin Film Solar Cells by High-Throughput Combinatorial Approach

Accelerated Optimization of TiO2/Sb2Se3 Thin Film Solar Cells by High‐Throughput Combinatorial Approach

A combinatorial strategy is used to accelerate the optimization of TiO2 thickness and postannealing temperature as well as Sb2Se3 thickness in Sb2Se3 thin film photovoltaics. By this high-throughput combinatorial approach, combined with (NH4)2S back surface treatment, the TiO2/Sb2Se3 solar cells achieve a device efficiency of 5.6% with impressive damp-heat and light-soaking stability.

[Communication]
Chao Chen, Yang Zhao, Shuaicheng Lu, Kanghua Li, Yang Li, Bo Yang, Wenhao Chen, Liang Wang, Dengbing Li, Hui Deng, Fei Yi, Jiang Tang
Adv. Energy Mater., July 14, 2017, https://doi.org/10.1002/aenm.201700866 Read article

Medium Bandgap Polymer Donor Based on Bi(trialkylsilylthienyl-benzo[1,2-b:4,5-b′]-difuran) for High Performance Nonfullerene Polymer Solar Cells

Medium Bandgap Polymer Donor Based on Bi(trialkylsilylthienyl‐benzo[1,2‐b:4,5‐b′]‐difuran) for High Performance Nonfullerene Polymer Solar Cells

By introducing trialkylsilyl-thienyl conjugated side chains to benzodifuran unit, a new medium bandgap polymer donor J81 is developed. The optimized nonfullerene polymer solar cells with J81 as donor show high power conversion efficiency of 11.05%.

[Communication]
Haijun Bin, Lian Zhong, Yankang Yang, Liang Gao, He Huang, Chenkai Sun, Xiaojun Li, Lingwei Xue, Zhi-Guo Zhang, Zhanjun Zhang, Yongfang Li
Adv. Energy Mater., July 14, 2017, https://doi.org/10.1002/aenm.201700746 Read article

Recent Development of Quinoxaline Based Polymers/Small Molecules for Organic Photovoltaics

Recent Development of Quinoxaline Based Polymers/Small Molecules for Organic Photovoltaics

This review summarizes the recent developments of quinoxaline-based polymers and small molecules for photovoltaic applications. The structure-properties relationships for this class of organic semiconductors are discussed by correlating the results reported in the literature in the last five years. The attractive properties and the compatibility with the massive production requirements anticipate a bright future for quinoxaline-based semiconductors in photovoltaics.

[Review]
Desta Gedefaw, Mario Prosa, Margherita Bolognesi, Mirko Seri, Mats R. Andersson
Adv. Energy Mater., July 14, 2017, https://doi.org/10.1002/aenm.201700575 Read article

Benzo[1,2-b:4,5-b′]Dithiophene–6,7-Difluoroquinoxaline Small Molecule Donors with >8% BHJ Solar Cell Efficiency

Benzo[1,2‐b:4,5‐b′]Dithiophene–6,7‐Difluoroquinoxaline Small Molecule Donors with >8% BHJ Solar Cell Efficiency

Rational pendant-group substitutions in benzo[1,2-b:4,5-b′]dithiophene-6,7-difluoroquin-oxaline small molecule donor analogs yield power conversion efficiencies >8% and high open-circuit voltages nearing 1 V in bulk heterojunction (BHJ) solar cells with the fullerene acceptor PC71BM. Charge transport in optimized BHJ solar cells proceeds with minimal, nearly trap-free recombination.

[Full Paper]
Ru-Ze Liang, Kai Wang, Jannic Wolf, Maxime Babics, Philipp Wucher, Mohammad K. Al Thehaiban, Pierre M. Beaujuge
Adv. Energy Mater., July 14, 2017, https://doi.org/10.1002/aenm.201602804 Read article

Phase Segregation Enhanced Ion Movement in Efficient Inorganic CsPbIBr2 Solar Cells

Phase Segregation Enhanced Ion Movement in Efficient Inorganic CsPbIBr2 Solar Cells

Iodide-rich phase segregation near grain boundaries and the formation of iodide-rich “clusters” inside the film are observed in the CsPbIBr2 perovskite thin films. The mobile ions generated by the phase segregation, moving alone grainboundaries and piling up at CsPbIBr2/TiO2 interface, can become charge injection barriers and exacerbate the current density–voltage hysteresis in inorganic CsPbIBr2 solar cells.

[Full Paper]
Wei Li, Mathias Uller Rothmann, Amelia Liu, Ziyu Wang, Yupeng Zhang, Alexander R. Pascoe, Jianfeng Lu, Liangcong Jiang, Yu Chen, Fuzhi Huang, Yong Peng, Qiaoliang Bao, Joanne Etheridge, Udo Bach, Yi-Bing Cheng
Adv. Energy Mater., July 12, 2017, https://doi.org/10.1002/aenm.201700946 Read article

Enhanced Light Harvesting in Perovskite Solar Cells by a Bioinspired Nanostructured Back Electrode

Enhanced Light Harvesting in Perovskite Solar Cells by a Bioinspired Nanostructured Back Electrode

A convenient and scalable light trapping scheme is demonstrated to enhance the light harvesting in organic–inorganic lead halide perovskite solar cells, which is realized by incorporating bioinspired moth-eye nanostructures into the metal back electrode via soft imprinting technique. The efficiency is enhanced to 16.3% due to self-enhanced absorption by broadband polarization-insensitive light scattering and surface plasmonic effect.

[Communication]
Jian Wei, Rui-Peng Xu, Yan-Qing Li, Chi Li, Jing-De Chen, Xin-Dong Zhao, Zhong-Zhi Xie, Chun-Sing Lee, Wen-Jun Zhang, Jian-Xin Tang
Adv. Energy Mater., July 12, 2017, https://doi.org/10.1002/aenm.201700492 Read article

Improved Stability of Polymer Solar Cells in Ambient Air via Atomic Layer Deposition of Ultrathin Dielectric Layers

Improved Stability of Polymer Solar Cells in Ambient Air via Atomic Layer Deposition of Ultrathin Dielectric Layers

Polymer solar cell technology is still under development in the key area of stability. An ultrathin atomic-layer-deposited dielectric oxide layer is inserted into inverted architecture polymer solar cells in order to address the issues that arise from the defect-rich nature of ZnO electron extraction material. Considerable improvement of the device efficiency and stability is observed.

[Full Paper]
Ermioni Polydorou, Martha A. Botzakaki, Ilias Sakellis, Anastasia Soultati, Andreas Kaltzoglou, Theodoros A. Papadopoulos, Joe Briscoe, Charalabos Drivas, Kostas Seintis, Mihalis Fakis, Leonidas C. Palilis, Stavroula N. Georga, Christoforos A. Krontiras, Stella Kennou, Polycarpos Falaras, Nikos Boukos, Dimitris Davazoglou, Panagiotis Argitis, Maria Vasilopoulou
Adv. Mater. Interfaces, July 12, 2017, https://doi.org/10.1002/admi.201700231 Read article

Solvent-Templated Electrodeposition of Mesoporous Nickel Oxide Layers for Solar Cell Applications

Solvent‐Templated Electrodeposition of Mesoporous Nickel Oxide Layers for Solar Cell Applications

Pure and simple: The deposition of NiO is studied in pure aprotic dimethyl sulfoxide (DMSO) medium and in DMSO/water mixtures through cathodic reduction reactions. After annealing these layers at a sufficient temperature to eliminate DMSO, pores are released and mesoporous films are formed. These solvent-templated electrodeposited layers are applied to p-type dye-sensitized solar cells.

[Article]
Sana Koussi-Daoud, Aurélien Planchat, Adèle Renaud, Yann Pellegrin, Fabrice Odobel, Thierry Pauporté
ChemElectroChem, July 11, 2017, https://doi.org/10.1002/celc.201700495 Read article

Toward Highly Efficient Nanostructured Solar Cells Using Concurrent Electrical and Optical Design

Toward Highly Efficient Nanostructured Solar Cells Using Concurrent Electrical and Optical Design

Nanostructures produce unique optical and electronic properties, which have the potential to meet the goals of third-generation photovoltaic devices. However, most nanostructures bring accompanying optical or electrical losses to solar cells. Here it is postulated that the concurrent design of both optical and electrical components will be an imperative route toward breaking the present-day limit of nanostructured solar cells.

[Review]
Hsin-Ping Wang, Jr-Hau He
Adv. Energy Mater., July 11, 2017, https://doi.org/10.1002/aenm.201602385 Read article

Enhancing the Performance of Perovskite Solar Cells by Hybridizing SnS Quantum Dots with CH3NH3PbI3

Enhancing the Performance of Perovskite Solar Cells by Hybridizing SnS Quantum Dots with CH3NH3PbI3

A CH3NH3PbI3/SnS quantum dots hybrid film is fabricated by a facile in situ crystallization process. This method takes advantage of complementarity of perovskite and quantum dots. Solar cells with hybrid absorber layer achieve 25% enhancement in efficiency than perovskite layer. A method for preparing perovskite/quantum dots hybrid materials is presented, exhibiting potential in design and preparation of other hybrid materials.

[Communication]
Jianhua Han, Xuewen Yin, Hui Nan, Yu Zhou, Zhibo Yao, Jianbao Li, Dan Oron, Hong Lin
Small, July 10, 2017, https://doi.org/10.1002/smll.201700953 Read article

Vertically Oriented 2D Layered Perovskite Solar Cells with Enhanced Efficiency and Good Stability

Vertically Oriented 2D Layered Perovskite Solar Cells with Enhanced Efficiency and Good Stability

A new route to realize the vertical-orientation growth of 2D layered (BA)2(MA)n−1PbnI3n+ (n = 3, 4)-based perovskite with the aid of NH4SCN additive through one-step spin-coating method. The corresponding planar-structured solar cells present the averaged power conversion efficiency (PCE) of 6.82% (n = 3) and the best PCE of 8.79% (n = 4) with unique stability.

[Communication]
Xinqian Zhang, Gang Wu, Shida Yang, Weifei Fu, Zhongqiang Zhang, Chen Chen, Wenqing Liu, Jielin Yan, Weitao Yang, Hongzheng Chen
Small, July 10, 2017, https://doi.org/10.1002/smll.201700611 Read article

Long-Lasting Nanophosphors Applied to UV-Resistant and Energy Storage Perovskite Solar Cells

Long‐Lasting Nanophosphors Applied to UV‐Resistant and Energy Storage Perovskite Solar Cells

A long persistent photon downshifting layer – SrAl2O4: Eu2+, Dy3+ is successfully incorporated into perovskite solar cells by the pulsed laser deposition approach to improve device performance. Optimized power conversion efficiency of 17.8% is obtained due to enhanced light harvesting and reduced carrier recombination. Furthermore, light-induced deep trap states are depressed and solar energy storage effect is obtained after illumination is turned off.

[Full Paper]
Cong Chen, Hao Li, Junjie Jin, Xu Chen, Yu Cheng, Yan Zheng, Dali Liu, Lin Xu, Hongwei Song, Qilin Dai
Adv. Energy Mater., July 10, 2017, https://doi.org/10.1002/aenm.201700758 Read article

Thiophene Rings Improve the Device Performance of Conjugated Polymers in Polymer Solar Cells with Thick Active Layers

Thiophene Rings Improve the Device Performance of Conjugated Polymers in Polymer Solar Cells with Thick Active Layers

Introducing additional thiophene rings in conjugated polymers increases the fill factor and power conversion efficiency of polymer:fullerene solar cells with thick active layers. This “thiophene ring effect” is a synergistic result of enhanced hole mobility and suppressed bimolecular charge recombination via the formation of more favorable polymer chain packing and finer phase separation.

[Full Paper]
Chunhui Duan, Ke Gao, Fallon J. M. Colberts, Feng Liu, Stefan C. J. Meskers, Martijn M. Wienk, René A. J. Janssen
Adv. Energy Mater., July 10, 2017, https://doi.org/10.1002/aenm.201700519 Read article

Photovoltaic Rudorffites: Lead-Free Silver Bismuth Halides Alternative to Hybrid Lead Halide Perovskites

Photovoltaic Rudorffites: Lead‐Free Silver Bismuth Halides Alternative to Hybrid Lead Halide Perovskites

Move over perovskite: Optoelectronic properties of several highly stable silver iodobismuthates with rudorffite structure reveal them as alternative nontoxic and solution-processable photovoltaic materials that feature direct band gaps of around 1.8 eV. The proof-of-concept solar cell with FTO/c-m-TiO2/Ag3BiI6/PTAA/Au (c: compact; m: mesoporous; PTAA: poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine]) architecture shows a promising power conversion efficiency of 4.3 %.

[Communication]
Ivan Turkevych, Said Kazaoui, Eisuke Ito, Toshiyuki Urano, Koji Yamada, Hiroshi Tomiyasu, Hideo Yamagishi, Michio Kondo, Shinji Aramaki
ChemSusChem, July 06, 2017, https://doi.org/10.1002/cssc.201700980 Read article

High-Throughput Electrical Potential Depth-Profiling in Air

High‐Throughput Electrical Potential Depth‐Profiling in Air

A novel methodology for depth profiling the electrical potential at interfaces that can be performed in air is presented. The approach is nondestructive, rapid, and enjoys high depth and energy resolution. In this work the method is developed and demonstated on FTO|TiO2|Co3O4 all-oxide junctions and a depletion width of only 8.6 ± 3.8 nm in the Co3O4 layer is shown.

[Full Paper]
Kevin J. Rietwyk, David A. Keller, Koushik Majhi, Adam Ginsburg, Maayan Priel, Hannah-Noa Barad, Assaf Y. Anderson, Arie Zaban
Adv. Mater. Interfaces, June 29, 2017, https://doi.org/10.1002/admi.201700136 Read article

Acenaphtho[1, 2-k]fluoranthene-Fused Diimide Derivatives: An Investigation of the Relationship Between Molecular Structure and Device Performance

Acenaphtho[1, 2‐k]fluoranthene‐Fused Diimide Derivatives: An Investigation of the Relationship Between Molecular Structure and Device Performance

Just accept it! A series of electron-acceptor acenaphtho fluoranthene-fused diimide (AFI) derivatives were designed and synthesized. Three AFI derivatives were functionalized with different alkyl chains. Large aromatic backbones of AFI derivatives endow them with low LUMO levels, down to −3.5 eV. Among them, AFI3, bearing branched alkyl chains on imide groups and linear alkyl chains on flanked phenyl groups, showed the highest power conversion efficiency of 2.37 %, much higher than those molecules having linear alkyl chains.

[Communication]
Lin Ding, Chi-Yuan Yang, Yu-Qing Zheng, Jie-Yu Wang, Jian Pei, Zhongmin Su
Asian J. Org. Chem., June 28, 2017, https://doi.org/10.1002/ajoc.201700203 Read article

The Influence of Oxygen Atoms on Conformation and π–π Stacking of Ladder-Type Donor-Based Polymers and Their Photovoltaic Properties

The Influence of Oxygen Atoms on Conformation and π–π Stacking of Ladder‐Type Donor‐Based Polymers and Their Photovoltaic Properties

Two oxygen atoms are inserted into indacenodithiophene (IDT) core structure, generating a novel ladder-type donor unit pyran-bridged IDT (IDTP), which shows a facially asymmetric side chain arrangement, resulting in denser π–π stacking of the corresponding polymer poly[(5,5,11,11-tetrakis(4-octylphenyl)-5,11-dihydrothieno[2′,3′:5,6]pyrano[3,4-g]thieno[3,2-c]isochromene)-alt-4,7-(5-fluoro-2,1,3-benzothiadiazole)] (PIDTP-FBT). A deeper highest occupied molecular orbital (HOMO) level is also obtained by PIDTP-FBT due to the inductive effect of oxygen atoms, giving higher open circuit voltage in the solar cell devices.

[Communication]
Tong Qin, Yue Zang, Wei-Yun Bai, Kai Yao, Yun-Xiang Xu
Macromol. Rapid Commun., June 19, 2017, https://doi.org/10.1002/marc.201700156 Read article

High-Efficiency Perovskite Solar Cell Based on Poly(3-Hexylthiophene): Influence of Molecular Weight and Mesoscopic Scaffold Layer

High‐Efficiency Perovskite Solar Cell Based on Poly(3‐Hexylthiophene): Influence of Molecular Weight and Mesoscopic Scaffold Layer

Molecular weight matters! High efficiency perovskite solar cells fabricated in ambient conditions by controlling of mesoporous (mp)-TiO2 thickness and investigation of poly(3-hexylthiophene) (P3HT) molecular weight (MW) as hole-transport layer. The best efficiencies are achieved for a MW of 124 kDa and for a thickness of mp-TiO2 of 500 nm. Efficiency enhancement is mainly related to the increase of Jsc and FF as P3HT MW increases.

[Full Paper]
Narges Yaghoobi Nia, Fabio Matteocci, Lucio Cina, Aldo Di Carlo
ChemSusChem, June 14, 2017, https://doi.org/10.1002/cssc.201700635 Read article

Effect of Alkyl Chain Length on the Sensitizing Action of Substituted Non-Symmetric Squaraines for p-Type Dye-Sensitized Solar Cells

Effect of Alkyl Chain Length on the Sensitizing Action of Substituted Non‐Symmetric Squaraines for p‐Type Dye‐Sensitized Solar Cells

Dying to be seen: p-Type solar cells are sensitized with three different squaraine dyes. Current density−voltage curves are measured for the cells with DS_45 (red), DS_34 (blue), and DS_47 (green). It is found that the shorter the side chain (C2H5, C4H9, and C12H25, respectively), the higher the short-circuit density and the photoelectric conversion efficiency. Incident photon-to-current conversion efficiency spectra (inset) reveal that the dyes adsorb the near-IR region of the solar radiation spectrum.

[Article]
Matteo Bonomo, Davide Saccone, Claudio Magistris, Aldo Di Carlo, Claudia Barolo, Danilo Dini
ChemElectroChem, June 09, 2017, https://doi.org/10.1002/celc.201700191 Read article

Effect of Alkyl Side Chains on the Photovoltaic Performance of 2,1,3-Benzoxadiazole-Based (-X-DADAD-)n-Type Copolymers

Effect of Alkyl Side Chains on the Photovoltaic Performance of 2,1,3‐Benzoxadiazole‐Based (‐X‐DADAD‐)n‐Type Copolymers

The bulkiness of the solubilizing alkyl side chains influences strongly optoelectronic and photovoltaic properties of conjugated polymers. A clear relationship is revealed between the parameters of the photovoltaic cells and the structure of the solubilizing alkyl groups.

[Full Paper]
Irina V. Klimovich, Diana K. Susarova, Liana N. Inasaridze, Alexander V. Akkuratov, Alexander. V. Chernyak, Pavel A. Troshin
Macromol. Chem. Phys., June 08, 2017, https://doi.org/10.1002/macp.201700055 Read article

Polymers with Alkylsulfanyl Side Chains for Bulk Heterojunction Solar Cells: Toward a Greener Strategy

Polymers with Alkylsulfanyl Side Chains for Bulk Heterojunction Solar Cells: Toward a Greener Strategy

Materials for organic solar cells can be synthesized without the use of organotin intermediates nor palladium catalysts. The synthesis and properties of three copolymers obtained through a Knoevenagel polycondensation reaction are reported. The alkylsulfanyl side chains on the thienyl rings improve the performances of the device with respect to alkyl chains.

[Full Paper]
Francesco Tassinari, Emanuela Libertini, Francesca Parenti, Barbara Ballarin, Francesco Paolo Di Nicola, Massimiliano Lanzi, Adele Mucci
Macromol. Chem. Phys., June 05, 2017, https://doi.org/10.1002/macp.201700111 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

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

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

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

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

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

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