共查询到20条相似文献,搜索用时 31 毫秒
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The efficiency of organic solar cells can benefit from multijunction device architectures, in which energy losses are substantially reduced. Herein, recent developments in the field of solution‐processed multijunction organic solar cells are described. Recently, various strategies have been investigated and implemented to improve the performance of these devices. Next to developing new materials and processing methods for the photoactive and interconnecting layers, specific layers or stacks are designed to increase light absorption and improve the photocurrent by utilizing optical interference effects. These activities have resulted in power conversion efficiencies that approach those of modern thin film photovoltaic technologies. Multijunction cells require more elaborate and intricate characterization procedures to establish their efficiency correctly and a critical view on the results and new insights in this matter are discussed. Application of multijunction cells in photoelectrochemical water splitting and upscaling toward a commercial technology is briefly addressed. 相似文献
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Shiqing Bi Xuanye Leng Yanxun Li Zhong Zheng Xuning Zhang Yuan Zhang Huiqiong Zhou 《Advanced materials (Deerfield Beach, Fla.)》2019,31(45)
Organic bulk heterojunction solar cells (OSCs) and hybrid halide perovskite solar cells (PSCs) are two promising photovoltaic techniques for next‐generation energy conversion devices. The rapid increase in the power conversion efficiency (PCE) in OSCs and PSCs has profited from synergetic progresses in rational material synthesis for photoactive layers, device processing, and interface engineering. Interface properties in these two types of devices play a critical role in dictating the processes of charge extraction, surface trap passivation, and interfacial recombination. Therefore, there have been great efforts directed to improving the solar cell performance and device stability in terms of interface modification. Here, recent progress in interfacial doping with biopolymers and ionic salts to modulate the cathode interface properties in OSCs is reviewed. For the anode interface modification, recent strategies of improving the surface properties in widely used PEDOT:PSS for narrowband OSCs or replacing it by novel organic conjugated materials will be touched upon. Several recent approaches are also in focus to deal with interfacial traps and surface passivation in emerging PSCs. Finally, the current challenges and possible directions for the efforts toward further boosts of PCEs and stability via interface engineering are discussed. 相似文献
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Solar Cells: Highly Efficient Organic Hole Transporting Materials for Perovskite and Organic Solar Cells with Long‐Term Stability (Adv. Mater. 4/2016)
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Saripally Sudhaker Reddy Kumarasamy Gunasekar Jin Hyuck Heo Sang Hyuk Im Chang Su Kim Dong‐Ho Kim Jong Hun Moon Jin Yong Lee Myungkwan Song Sung‐Ho Jin 《Advanced materials (Deerfield Beach, Fla.)》2016,28(4):685-685
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Tandem Organic Solar Cells: Nonfullerene Tandem Organic Solar Cells with High Open‐Circuit Voltage of 1.97 V (Adv. Mater. 44/2016)
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Wenqing Liu Shuixing Li Jiang Huang Shida Yang Jiehuan Chen Lijian Zuo Minmin Shi Xiaowei Zhan Chang‐Zhi Li Hongzheng Chen 《Advanced materials (Deerfield Beach, Fla.)》2016,28(44):9870-9870
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Shuixing Li Wenqing Liu Chang‐Zhi Li Minmin Shi Hongzheng Chen 《Small (Weinheim an der Bergstrasse, Germany)》2017,13(37)
Fullerene‐free OSCs employing n‐type small molecules or polymers as the acceptors have recently experienced a rapid rise with efficiencies exceeding 12%. Owing to the good optoelectronic and morphological tunabilities, non‐fullerene acceptors exhibit great potential for realizing high‐performance and practical OSCs. In this Review, recent exciting progress made in developing highly efficient non‐fullerene acceptors is summarized, mainly correlating factors like absorption, energy loss and morphology of new materials to their correspondent photovoltaic performance. 相似文献
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Organic Solar Cells: A Tetraphenylethylene Core‐Based 3D Structure Small Molecular Acceptor Enabling Efficient Non‐Fullerene Organic Solar Cells (Adv. Mater. 6/2015)
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Yuhang Liu Cheng Mu Kui Jiang Jingbo Zhao Yunke Li Lu Zhang Zhengke Li Joshua Yuk Lin Lai Huawei Hu Tingxuan Ma Rongrong Hu Demei Yu Xuhui Huang Ben Zhong Tang He Yan 《Advanced materials (Deerfield Beach, Fla.)》2015,27(6):1014-1014
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Highly Efficient Organic Hole Transporting Materials for Perovskite and Organic Solar Cells with Long‐Term Stability
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Saripally Sudhaker Reddy Kumarasamy Gunasekar Jin Hyuck Heo Sang Hyuk Im Chang Su Kim Dong‐Ho Kim Jong Hun Moon Jin Yong Lee Myungkwan Song Sung‐Ho Jin 《Advanced materials (Deerfield Beach, Fla.)》2016,28(4):686-693
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Bulk‐Heterojunction Organic Solar Cells: Five Core Technologies for Their Commercialization
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Hongkyu Kang Geunjin Kim Junghwan Kim Sooncheol Kwon Heejoo Kim Kwanghee Lee 《Advanced materials (Deerfield Beach, Fla.)》2016,28(36):7821-7861
The past two decades of vigorous interdisciplinary approaches has seen tremendous breakthroughs in both scientific and technological developments of bulk‐heterojunction organic solar cells (OSCs) based on nanocomposites of π‐conjugated organic semiconductors. Because of their unique functionalities, the OSC field is expected to enable innovative photovoltaic applications that can be difficult to achieve using traditional inorganic solar cells: OSCs are printable, portable, wearable, disposable, biocompatible, and attachable to curved surfaces. The ultimate objective of this field is to develop cost‐effective, stable, and high‐performance photovoltaic modules fabricated on large‐area flexible plastic substrates via high‐volume/throughput roll‐to‐roll printing processing and thus achieve the practical implementation of OSCs. Recently, intensive research efforts into the development of organic materials, processing techniques, interface engineering, and device architectures have led to a remarkable improvement in power conversion efficiencies, exceeding 11%, which has finally brought OSCs close to commercialization. Current research interests are expanding from academic to industrial viewpoints to improve device stability and compatibility with large‐scale printing processes, which must be addressed to realize viable applications. Here, both academic and industrial issues are reviewed by highlighting historically monumental research results and recent state‐of‐the‐art progress in OSCs. Moreover, perspectives on five core technologies that affect the realization of the practical use of OSCs are presented, including device efficiency, device stability, flexible and transparent electrodes, module designs, and printing techniques. 相似文献
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High‐Performance Integrated Perovskite and Organic Solar Cells with Enhanced Fill Factors and Near‐Infrared Harvesting
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Junghwan Kim Geunjin Kim Hyungcheol Back Jaemin Kong In‐Wook Hwang Tae Kyun Kim Sooncheol Kwon Jong‐Hoon Lee Jinho Lee Kilho Yu Chang‐Lyoul Lee Hongkyu Kang Kwanghee Lee 《Advanced materials (Deerfield Beach, Fla.)》2016,28(16):3159-3165
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The recently emerged integrated perovskite/bulk-heterojunction (BHJ) organic solar cells (IPOSCs) without any recombination layers have generated wide attention. This type of device structure can take the advantages of tandem cells using both perovskite solar and near-infrared (NIR) BHJ organic solar materials for wide-range sunlight absorption and the simple fabrication of single junction cells, as the low bandgap BHJ layer can provide additional light harvesting in the NIR region and the high open-circuit voltage can be maintained at the same time. This progress report highlights the recent developments in such IPOSCs and the possible challenges ahead. In addition, the recent development of perovskite solar cells and NIR organic solar cells is also covered to fully underline the importance and potential of IPOSCs. 相似文献
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Lijian Zuo Jiangsheng Yu Xueliang Shi Francis Lin Weihua Tang Alex K.‐Y. Jen 《Advanced materials (Deerfield Beach, Fla.)》2017,29(34)
In this work, a highly efficient parallel connected tandem solar cell utilizing a nonfullerene acceptor is demonstrated. Guided by optical simulation, each of the active layer thicknesses of subcells are tuned to maximize its light trapping without spending intense effort to match photocurrent. Interestingly, a strong optical microcavity with dual oscillation centers is formed in a back subcell, which further enhances light absorption. The parallel tandem device shows an improved photon‐to‐electron response over the range between 450 and 800 nm, and a high short‐circuit current density (J SC) of 17.92 mA cm?2. In addition, the subcells show high fill factors due to reduced recombination loss under diluted light intensity. These merits enable an overall power conversion efficiency (PCE) of >10% for this tandem cell, which represents a ≈15% enhancement compared to the optimal single‐junction device. Further application of the designed parallel tandem configuration to more efficient single‐junction cells enable a PCE of >11%, which is the highest efficiency among all parallel connected organic solar cells (OSCs). This work stresses the importance of employing a parallel tandem configuration for achieving efficient light harvesting in nonfullerene‐based OSCs. It provides a useful strategy for exploring the ultimate performance of organic solar cells. 相似文献
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Runnan Yu Shaoqing Zhang Huifeng Yao Bing Guo Sunsun Li Hao Zhang Maojie Zhang Jianhui Hou 《Advanced materials (Deerfield Beach, Fla.)》2017,29(26)
High‐performance ternary organic solar cells are fabricated by using a wide‐bandgap polymer donor (bithienyl‐benzodithiophene‐alt‐fluorobenzotriazole copolymer, J52) and two well‐miscible nonfullerene acceptors, methyl‐modified nonfullerene acceptor (IT‐M) and 2,2′‐((2Z ,2′Z )‐((5,5′‐(4,4,9,9‐tetrakis(4‐hexylphenyl)‐4,9‐dihydros‐indaceno[1,2‐b :5,6‐b ′]dithiophene‐2,7‐diyl)bis(4‐((2‐ethylhexyl)oxy)thiophene‐5,2‐diyl))bis(methanylylidene))bis(3‐oxo‐2,3‐dihydro‐1H ‐indene‐2,1‐diylidene))dimalononitrile (IEICO). The two acceptors with complementary absorption spectra and similar lowest unoccupied molecular orbital levels show excellent compatibility in the blend due to their very similar chemical structures. Consequently, the obtained ternary organic solar cells (OSC) exhibits a high efficiency of 11.1%, with an enhanced short‐circuit current density of 19.7 mA cm?2 and a fill factor of 0.668. In this ternary system, broadened absorption, similar output voltages, and compatible morphology are achieved simultaneously, demonstrating a promising strategy to further improve the performance of ternary OSCs. 相似文献