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
Rigidifying Nonplanar Perylene Diimides by Ring Fusion Toward Geometry-Tunable Acceptors for High-Performance Fullerene-Free Solar Cells.
Hongliang Zhong,Chen Hao Wu,Chang-Zhi Li,Joshua H. Carpenter,Chu-Chen Chueh,Jung-Yao Chen,Harald Ade,Alex K.-Y. Jen +7 more
TL;DR: Rigid fused perylene diimide (PDI) dimers bridged with heterocycles exhibit superior photovoltaic performance compared to their unfused semiflexible analogues.
Journal ArticleDOI
A high dielectric constant non-fullerene acceptor for efficient bulk-heterojunction organic solar cells
Xi Liu,Boming Xie,Chunhui Duan,Zhaojing Wang,Baobing Fan,Kai Zhang,Baojun Lin,Fallon J. M. Colberts,Wei Ma,Raj René Janssen,Fei Huang,Yong Cao +11 more
TL;DR: In this paper, an oligoethylene oxide side chain-containing non-fullerene acceptor (ITIC-OE) with a high relative dielectric constant of er ≈ 9.4 was reported.
Journal ArticleDOI
High‐Efficiency Nonfullerene Organic Solar Cells: Critical Factors that Affect Complex Multi‐Length Scale Morphology and Device Performance
Long Ye,Wenchao Zhao,Sunsun Li,Subhrangsu Mukherjee,Joshua H. Carpenter,Omar Awartani,Xuechen Jiao,Jianhui Hou,Harald Ade +8 more
TL;DR: In this article, a linear correlation between the average purity variations at small length scale (≈10 nm) and photovoltaic device characteristics across all processing protocols is observed in ≈12%-efficiency polymer:SMA systems.
Journal ArticleDOI
High-Performance As-Cast Nonfullerene Polymer Solar Cells with Thicker Active Layer and Large Area Exceeding 11% Power Conversion Efficiency.
Qunping Fan,Yan Wang,Maojie Zhang,Bo Wu,Xia Guo,Yufeng Jiang,Wanbin Li,Bing Guo,Chennan Ye,Wenyan Su,Jin Fang,Xue-Mei Ou,Feng Liu,Zhixiang Wei,Tze Chien Sum,Thomas P. Russell,Yongfang Li,Yongfang Li +17 more
TL;DR: The results indicate that the PM6:IDIC blend is a promising candidate for future roll-to-roll mass manufacturing and practical application of highly efficient PSCs.
Journal ArticleDOI
Pronounced Effects of a Triazine Core on Photovoltaic Performance-Efficient Organic Solar Cells Enabled by a PDI Trimer-Based Small Molecular Acceptor.
TL;DR: A novel-small molecular acceptor with electron-deficient 1,3,5-triazine as the core and perylene diimides as the arms is developed as the acceptor material for efficient bulk heterojunction organic solar cells with an efficiency of 9.15%.
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.