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
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Journal ArticleDOI
High-Performance Simple Nonfused Ring Electron Acceptors with Diphenylamino Flanking Groups.
Xiaodong Wang,Hao Lu,Jiadong Zhou,Xiaoyun Xu,Cai'e Zhang,Hao Huang,Jinsheng Song,Yahui Liu,Xinjun Xu,Zengqi Xie,Zheng Tang,Zhishan Bo +11 more
TL;DR: In this paper, four simple non-fused ring electron acceptors (H-2F, CH3-2Fs, OCH3-1F, SCH3 2F, and SCH 3 2F) were designed and synthesized, and triarylamine was used as the flanking group for the construction of the acceptors.
Journal ArticleDOI
Non‐Radiative Recombination Energy Losses in Non‐Fullerene Organic Solar Cells
TL;DR: In this article , a review of the recent studies and achievements about ΔE3 in non-fullerene acceptor-based OSCs has been summarized from the aspects of material design, morphology manipulation, ternary strategy, mechanism, and theoretical study.
Journal ArticleDOI
1,1-Dicyanomethylene-3-Indanone end-cap engineering for fused-ring electron acceptor-based high-performance organic photovoltaics
TL;DR: In this paper, a review of organic photovoltaics based on 1,1-dicyanomethylene-3-indanone (IC) derivatives is presented.
Journal ArticleDOI
Achieving high performance non-fullerene organic solar cells through tuning the numbers of electron deficient building blocks of molecular acceptors
TL;DR: In this paper, two analogous dimer and tetramer compounds were designed, theoretically calculated, synthesized and developed as electron acceptors for organic solar cells, and the effects of the number of the electron deficient building blocks on the optical absorption, energy levels, charge transport, morphology, crystallinity, and photovoltaic performance of the molecules were investigated.
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Poly(3-hexylthiophene)-based non-fullerene solar cells achieve high photovoltaic performance with small energy loss
TL;DR: In this paper, a low-bandgap electron acceptor material called ATT-3 was designed by combining rhodanine and octyl thieno[3,4-b]thiophene-2-carboxylate as the electron-deficient part.
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.