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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High-Efficiency Organic Solar Cells Based on a Low-Cost Fully Non-Fused Electron Acceptor
Yuanyuan Zhou,Yuanyuan Zhou,Miao Li,Hao Lu,Hui Jin,Xiaodong Wang,Yan Zhang,Shuaishuai Shen,Zaifei Ma,Jinsheng Song,Zhishan Bo +10 more
Journal ArticleDOI
A–D–A small molecule acceptors with ladder-type arenes for organic solar cells
TL;DR: In this article, the authors collected the reported high-efficiency A-D-A SMAs according to the ring number of the ladder-type donor core in their centers and summarized the evolution process of these molecular structures and their photovoltaic parameters.
Journal ArticleDOI
High-Performance Fused Ring Electron Acceptor–Perovskite Hybrid
Mingyu Zhang,Shuixing Dai,Sreelakshmi Chandrabose,Kai Chen,Kuan Liu,Minchao Qin,Xinhui Lu,Justin M. Hodgkiss,Huanping Zhou,Xiaowei Zhan +9 more
TL;DR: Time-resolved photoluminescence and transient absorption measurements reveal that FREA facilitates efficient electron extraction and collection and suggest faster charge transfer and reduced charge recombination in solar cells based on FREA-perovskite hybrid films.
Journal ArticleDOI
Small Molecules Based on Alkyl/Alkylthio-thieno[3,2-b]thiophene-Substituted Benzo[1,2-b:4,5-b′]dithiophene for Solution-Processed Solar Cells with High Performance
Bin Kan,Qian Zhang,Feng Liu,Xiangjian Wan,Yunchuang Wang,Wang Ni,Xuan Yang,Mingtao Zhang,Hongtao Zhang,Thomas P. Russell,Yongsheng Chen +10 more
TL;DR: In this paper, two acceptor-donor-acceptor small molecules based on thieno[3,2b]thiophene-substituted benzo[1,2-b:4,5-b′]dithiophene were designed and synthesized.
Journal ArticleDOI
Triplet exciton formation for non-radiative voltage loss in high-efficiency nonfullerene organic solar cells
Zeng Chen,Xu Chen,Ziyan Jia,Guanqing Zhou,Jianqiu Xu,Yuexia Wu,Xinxin Xia,Xufeng Li,Xuning Zhang,Chao Deng,Yuan Zhang,Xinhui Lu,Weimin Liu,Chunfeng Zhang,Yang Yang,Haiming Zhu +15 more
TL;DR: In this paper, the formation of NFA triplet excitons from free carrier recombination was shown to be a main non-radiative recombination and energy loss channel.
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).
Journal ArticleDOI
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%.
Journal ArticleDOI
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.