共查询到20条相似文献,搜索用时 0 毫秒
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Roll‐to‐Roll Printed Large‐Area All‐Polymer Solar Cells with 5% Efficiency Based on a Low Crystallinity Conjugated Polymer Blend 下载免费PDF全文
Yan Zhou Kevin Gu Tadanori Kurosawa Yikun Guo Yunke Li Haoran Lin Hongping Yan Francisco Molina‐Lopez Christopher J. Tassone Cheng Wang Stefan C. B. Mannsfeld He Yan Dahui Zhao Michael F. Toney Zhenan Bao 《Liver Transplantation》2017,7(14)
The challenge of continuous printing in high‐efficiency large‐area organic solar cells is a key limiting factor for their widespread adoption. A materials design concept for achieving large‐area, solution‐coated all‐polymer bulk heterojunction solar cells with stable phase separation morphology between the donor and acceptor is presented. The key concept lies in inhibiting strong crystallization of donor and acceptor polymers, thus forming intermixed, low crystallinity, and mostly amorphous blends. Based on experiments using donors and acceptors with different degree of crystallinity, the results show that microphase separated donor and acceptor domain sizes are inversely proportional to the crystallinity of the conjugated polymers. This methodology of using low crystallinity donors and acceptors has the added benefit of forming a consistent and robust morphology that is insensitive to different processing conditions, allowing one to easily scale up the printing process from a small‐scale solution shearing coater to a large‐scale continuous roll‐to‐roll (R2R) printer. Large‐area all‐polymer solar cells are continuously roll‐to‐roll slot die printed with power conversion efficiencies of 5%, with combined cell area up to 10 cm2. This is among the highest efficiencies realized with R2R‐coated active layer organic materials on flexible substrate. 相似文献
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Jeongjoo Lee You‐Hyun Seo Sung‐Nam Kwon Do‐Hyung Kim Seokhoon Jang Hyeonwoo Jung Youngu Lee Hasitha Weerasinghe Taehyo Kim Jin Young Kim Doojin Vak Seok‐In Na 《Liver Transplantation》2019,9(36)
The record efficiency of the state‐of‐the‐art polymer solar cells (PSCs) is rapidly increasing, due to the discovery of high‐performance photoactive donor and acceptor materials. However, strong questions remain as to whether such high‐efficiency PSCs can be produced by scalable processes. This paper reports a high power conversion efficiency (PCE) of 13.5% achieved with single‐junction ternary PSCs based on PTB7‐Th, PC71BM, and COi8DFIC fabricated by slot‐die coating, which shows the highest PCE ever reported in PSCs fabricated by a scalable process. To understand the origin of the high performance of the slot‐die coated device, slot‐die coated photoactive films and devices are systematically investigated. These results indicate that the good performance of the slot‐die PSCs can be due to a favorable molecule‐structure and film‐morphology change by introducing 1,8‐diiodooctane and heat treatment, which can lead to improved charge transport with reduced carrier recombination. The optimized condition is then used for the fabrication of large‐area modules and also for roll‐to‐roll fabrication. The slot‐die coated module with 30 cm2 active‐area and roll‐to‐roll produced flexible PSC has shown 8.6% and 9.6%, respectively. These efficiencies are the highest in each category and demonstrate the strong potential of the slot‐die coated ternary system for commercial applications. 相似文献
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Thue T. Larsen‐Olsen Florian Machui Balthazar Lechene Stephane Berny Dechan Angmo Roar Søndergaard Nicolas Blouin William Mitchell Steven Tierney Tobias Cull Priti Tiwana Frank Meyer Miguel Carrasco‐Orozco Arnulf Scheel Wilfried Lövenich Rémi de Bettignies Christoph J. Brabec Frederik C. Krebs 《Liver Transplantation》2012,2(9):1091-1094
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Polymer Solar Cells: Matrix Organization and Merit Factor Evaluation as a Method to Address the Challenge of Finding a Polymer Material for Roll Coated Polymer Solar Cells (Adv. Energy Mater. 10/2015) 下载免费PDF全文
Eva Bundgaard Francesco Livi Ole Hagemann Jon E. Carlé Martin Helgesen Ilona M. Heckler Natalia K. Zawacka Dechan Angmo Thue T. Larsen‐Olsen Gisele A. dos Reis Benatto Bérenger Roth Morten V. Madsen Mats R. Andersson Mikkel Jørgensen Roar R. Søndergaard Frederik C. Krebs 《Liver Transplantation》2015,5(10)
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Solar Cells: High‐Performance and Stable All‐Polymer Solar Cells Using Donor and Acceptor Polymers with Complementary Absorption (Adv. Energy Mater. 14/2017) 下载免费PDF全文
Zhaojun Li Wei Zhang Xiaofeng Xu Zewdneh Genene Dario Di Carlo Rasi Wendimagegn Mammo Arkady Yartsev M. R. Andersson René A. J. Janssen Ergang Wang 《Liver Transplantation》2017,7(14)
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Layer‐by‐Layer Solution‐Processed Low‐Bandgap Polymer‐PC61BM Solar Cells with High Efficiency 下载免费PDF全文
Polymer solar cells (PSCs) are fabricated without solvent additives using a low‐bandgap polymer, PBDTTT‐C‐T, as the donor and [6,6]‐phenyl‐C61‐butyric‐acid‐methyl‐ester (PC61BM) as the acceptor. Donor‐acceptor blend and layer‐by‐layer (LL) solution process are used to form active layers. Relative to the blend devices, the LL devices exhibit stronger absorption, better vertical phase separation, higher hole and electron mobilities, and better charge extraction at correct electrodes. As a result, after thermal annealing the LL devices exhibit an average power conversion efficiency (PCE) of 6.86%, which is much higher than that of the blend devices (4.31%). The best PCE of the LL devices is 7.13%, which is the highest reported for LL processed PSCs and among the highest reported for PC61BM‐based single‐junction PSCs. 相似文献
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Modulation of End Groups for Low‐Bandgap Nonfullerene Acceptors Enabling High‐Performance Organic Solar Cells 下载免费PDF全文
Yuzhong Chen Tao Liu Huawei Hu Tingxuan Ma Joshua Yuk Lin Lai Jianquan Zhang Harald Ade He Yan 《Liver Transplantation》2018,8(27)
The field of nonfullerene organic solar cells (OSCs) has seen an impressive progress, largely due to advances in high‐performance small molecule acceptors (SMAs). As a large portion of the solar energy is located in the near‐infrared region, it is important to develop ultralow‐bandgap SMAs that have extended absorption in the spectral range of 800–1000 nm to maximize light absorption and efficiencies. In this work, three low‐bandgap SMAs, namely, IXIC, IXIC‐2Cl, and IXIC‐4Cl, are designed and synthesized with same fused terthieno[3,2‐b]thiophene donor unit and different end groups (EGs). The three SMAs all have low optical bandgap (Eg) of 1.35, 1.30, and 1.25 eV, respectively. The chlorination on EGs can lower the energy level and broaden absorption range of the SMAs. As a result, the Voc of the devices is reduced but the Jsc is significantly increased. In addition, the addition of chlorine atoms can enhance π–π stacking and crystallinity of the SMAs, which result in high fill factors. Overall, the optimum EGs are monochlorine‐substituted IC and OSCs based on PBDB‐T:IXIC‐2Cl that can achieve remarkable power conversion efficiencies (PCEs) of 12.2%, which is one of the highest PCEs for nonfullerene organic solar cells based on low‐bandgap SMAs. 相似文献
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Solar Cells: Quaternary Organic Solar Cells Enhanced by Cocrystalline Squaraines with Power Conversion Efficiencies >10% (Adv. Energy Mater. 21/2016) 下载免费PDF全文
Tenghooi Goh Jing‐Shun Huang Kevin G. Yager Matthew Y. Sfeir Chang‐Yong Nam Xiao Tong Louise M. Guard Patrick R. Melvin Francisco Antonio Benjamin G. Bartolome Minjoo L. Lee Nilay Hazari André D. Taylor 《Liver Transplantation》2016,6(21)
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