Journal ArticleDOI
Efficient Nonfullerene Polymer Solar Cells Enabled by a Novel Wide Bandgap Small Molecular Acceptor.
Guangjun Zhang,Guofang Yang,He Yan,Joo-Hyun Kim,Harald Ade,Wenlin Wu,Xiaopeng Xu,Yuwei Duan,Qiang Peng +8 more
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TLDR
A wide bandgap small molecular acceptor, SFBRCN, containing a 3D spirobifluorene core flaked with a 2,1,3-benzothiadiazole (BT) and end-capped with highly electron-deficient RCN units, has been successfully synthesized as a small molecularacceptor (SMA) for nonfullerene polymer solar cells (PSCs).Abstract:
A wide bandgap small molecular acceptor, SFBRCN, containing a 3D spirobifluorene core flaked with a 2,1,3-benzothiadiazole (BT) and end-capped with highly electron-deficient (3-ethylhexyl-4-oxothiazolidine-2-yl)dimalononitrile (RCN) units, has been successfully synthesized as a small molecular acceptor (SMA) for nonfullerene polymer solar cells (PSCs). This SMA exhibits a relatively wide optical bandgap of 2.03 eV, which provides a complementary absorption to commonly used low bandgap donor polymers, such as PTB7-Th. The strong electron-deficient BT and RCN units afford SFBRCN with a low-lying LUMO (lowest unoccupied molecular orbital) level, while the 3D structured spirobifluorene core can effectively suppress the self-aggregation tendency of the SMA, thus yielding a polymer:SMA blend with reasonably small domain size. As the results of such molecular design, SFBRCN enables nonfullerene PSCs with a high efficiency of 10.26%, which is the highest performance reported to date for a large bandgap nonfullerene SMA.read more
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Highly Efficient Nonfullerene Polymer Solar Cells Enabled by a Copper(I) Coordination Strategy Employing a 1,3,4-Oxadiazole-Containing Wide-Bandgap Copolymer Donor.
TL;DR: This work provides a novel oxadiazole-containing wide-bandgap polymeric donor candidate for high-performance NF-PSCs but also presents an efficient morphology-optimization approach to elevate the PCE of NF- PSCs for future practical applications.
Journal ArticleDOI
Ultrafast Channel II process induced by a 3-D texture with enhanced acceptor order ranges for high-performance non-fullerene polymer solar cells
Shanshan Chen,Sang Myeon Lee,Jianqiu Xu,Jungho Lee,Kyu Cheol Lee,Tianyu Hou,Yankang Yang,Mingyu Jeong,Byongkyu Lee,Yongjoon Cho,Sungwoo Jung,Jiyeon Oh,Zhi-Guo Zhang,Chunfeng Zhang,Min Xiao,Yongfang Li,Changduk Yang +16 more
TL;DR: In this article, three trialkylsilyl substituted benzodithiophene-based polymer donors (PJ1, PJ2, and PJ3) were synthesized with fine-tuning of the highest occupied molecular orbital (HOMO)/lowest unoccupied molecular orbital(LUMO) and optical absorption.
Journal ArticleDOI
Nonfullerene small-molecule acceptors with perpendicular side-chains for fullerene-free solar cells
TL;DR: In this paper, a review of fused-ring small-molecule acceptors (NF-SMAs) is presented, with a focus on their molecular structure design and structure-property relationships.
Journal ArticleDOI
Recent Progress in Organic Solar Cells Based on Non-Fullerene Acceptors: Materials to Devices
TL;DR: In this paper , photovoltaics (PV) is now an established technology and the most promising method for harvesting energy from the sun, which is attracting increasing attention as the traditional fossil-based energy sources are being depleted.
Journal ArticleDOI
Simple-structured small molecule acceptors constructed by a weakly electron-deficient thiazolothiazole core for high-efficiency non-fullerene organic solar cells
TL;DR: In this article, a simple and weakly electron-deficient thiazolothiazole (TTz) core was proposed to construct non-fullerene organic solar cells (OSCs).
References
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Journal ArticleDOI
Fast charge separation in a non-fullerene organic solar cell with a small driving force
Jing Liu,Shangshang Chen,Deping Qian,Bhoj Gautam,Guofang Yang,Guofang Yang,Jingbo Zhao,Jonas Bergqvist,Fengling Zhang,Wei Ma,Harald Ade,Olle Inganäs,Kenan Gundogdu,Feng Gao,He Henry Yan +14 more
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