Journal ArticleDOI
An electron acceptor challenging fullerenes for efficient polymer solar cells.
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TLDR
A novel non-fullerene electron acceptor (ITIC) that overcomes some of the shortcomings of fullerene acceptors, for example, weak absorption in the visible spectral region and limited energy-level variability, is designed and synthesized.Abstract:
A novel non-fullerene electron acceptor (ITIC) that overcomes some of the shortcomings of fullerene acceptors, for example, weak absorption in the visible spectral region and limited energy-level variability, is designed and synthesized. Fullerene-free polymer solar cells (PSCs) based on the ITIC acceptor are demonstrated to exhibit power conversion effi ciencies of up to 6.8%, a record for fullerene-free PSCs.read more
Citations
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Journal ArticleDOI
Universal Strategy To Reduce Noise Current for Sensitive Organic Photodetectors.
Sixing Xiong,Lingliang Li,Fei Qin,Lin Mao,Bangwu Luo,Youyu Jiang,Zaifang Li,Jinsong Huang,Yinhua Zhou +8 more
TL;DR: The results suggest that the strategy of transfer-printing P3HT films as the electron-blocking layer is universal and effective for the fabrication of sensitive organic photodetectors.
Journal ArticleDOI
Recent progress on intramolecular charge-transfer compounds as photoelectric active materials
Liang Xu,Qichun Zhang +1 more
TL;DR: In this paper, the authors summarized the recent advance on the structural design and synthetic strategies of intramolecular charge transfer compounds as well as their potential applications in two-photon absorption chromophores, organic photovoltaics and organic light-emitting diodes.
Journal ArticleDOI
Non-fullerene acceptors based on fused-ring oligomers for efficient polymer solar cells via complementary light-absorption
Renlong Li,Gongchu Liu,Manjun Xiao,Xiye Yang,Xiang Liu,Zhenfeng Wang,Lei Ying,Fei Huang,Yong Cao +8 more
TL;DR: In this article, the authors designed and synthesized two novel non-fullerene small molecule acceptors (IDTN and IDT-T-N) that consist of indacenodithiophene as the electron-donating core and 2-(3-oxo-2,3-dihydro-1H-cyclopenta[b]naphthalen-1-ylidene)malononitrile (N) as a novel electron-withdrawing end group.
Journal ArticleDOI
Effect of Non-fullerene Acceptors’ Side Chains on the Morphology and Photovoltaic Performance of Organic Solar Cells
TL;DR: The investigations have demonstrated the variation of side chains greatly affects the charge dissociation, charge mobility, and morphology of the donor:acceptor blend films, and reveal that the side chain engineering is a valid way of tuning the morphology of blend films and improving PCE in polymer solar cells.
Journal ArticleDOI
Carboxylate-substituted polythiophenes for efficient fullerene-free polymer solar cells : the effect of chlorination on their properties
Qi Wang,Miaomiao Li,Xiaowei Zhang,Yunpeng Qin,Junke Wang,Jidong Zhang,Jianhui Hou,René A. J. Janssen,Yanhou Geng +8 more
TL;DR: In this paper, two widebandgap polythiophenes, i.e., poly[5,5′-bis(2-hexyldecyl)-(2,2′-bithiophene)-4,4′-dicarboxylate-alt, were synthesized for fullerene-free polymer solar cells (PSCs).
References
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Journal ArticleDOI
Polymer photovoltaic cells : enhanced efficiencies via a network of internal donor-acceptor heterojunctions
TL;DR: In this paper, the carrier collection efficiency and energy conversion efficiency of polymer photovoltaic cells were improved by blending of the semiconducting polymer with C60 or its functionalized derivatives.
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Enhanced power-conversion efficiency in polymer solar cells using an inverted device structure
TL;DR: In this article, the authors showed that PFN can be incorporated into polymer light-emitting devices (PLEDs) to enhance electron injection from high-work-function metals such as aluminium (work function w of 4.3 eV) and gold (w ¼ 5.2 eV).
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Semiconducting π-conjugated systems in field-effect transistors: a material odyssey of organic electronics.
TL;DR: The focus of this review will be on the performance analysis of π-conjugated systems in OFETs, a kind of device consisting of an organic semiconducting layer, a gate insulator layer, and three terminals that provide an important insight into the charge transport of ρconjugate systems.
Journal ArticleDOI
A polymer tandem solar cell with 10.6% power conversion efficiency
Jingbi You,Letian Dou,Ken Yoshimura,Takehito Kato,Kenichiro Ohya,Tom Moriarty,Keith Emery,Chun-Chao Chen,Jing Gao,Gang Li,Yang Yang +10 more
TL;DR: The development of a high-performance low bandgap polymer that enables a solution processed tandem solar cell with certified 10.6% power conversion efficiency under standard reporting conditions, which is the first certified polymer solar cell efficiency over 10%.
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Molecular design of photovoltaic materials for polymer solar cells: toward suitable electronic energy levels and broad absorption.
TL;DR: This Account discusses the basic requirements and scientific issues in the molecular design of high efficiency photovoltaic molecules, and summarizes recent progress in electronic energy level engineering and absorption spectral broadening of the donor and acceptor photvoltaic materials by my research group and others.