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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Journal ArticleDOI
Wide-Bandgap Small Molecular Acceptors Based on a Weak Electron-Withdrawing Moiety for Efficient Polymer Solar Cells
Yanting Gong,Zhipeng Kan,Weidong Xu,Yang Wang,Sanaa Hayel Nazil Alshammari,Frédéric Laquai,Wen-Yong Lai,Wen-Yong Lai,Wei Huang,Wei Huang,Wei Huang +10 more
TL;DR: Zhang et al. as mentioned in this paper reported that the research reported in this paper was also supported by funding from King Abdullah University of Science and Technology (KAUST), and minor changes were made to the acknowledgements and abstract on October 16, 2018.
Journal ArticleDOI
Highly efficient and highly stable terpolymer-based all-polymer solar cells with broad complementary absorption and robust morphology
Aesun Kim,Chang Geun Park,Su Hong Park,Hyung Jong Kim,Suna Choi,Young Un Kim,Choel Hun Jeong,Weon-Sik Chae,Min Ju Cho,Donghoon Choi +9 more
TL;DR: In this article, a conjugated terpolymer referred to as Ter-3MTTPD was successfully synthesized using 4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b′]dithiophene as a donor and methyl thiophene-3-carboxylate (3MT) and 5-(2.4-hexyl)-4H-thieno[3,4-c]pyrrole-4,
Journal ArticleDOI
Tandem structure: a breakthrough in power conversion efficiency for highly efficient polymer solar cells
TL;DR: In this article, a comprehensive review of the recent developments in polymer TSCs, enumerate the current problems and challenges that they face, and suggest a series of countermeasures for their future development.
Journal ArticleDOI
Fused pentacyclic electron acceptors with four cis-arranged alkyl side chains for efficient polymer solar cells
TL;DR: In this article, a fused pentacyclic small molecule acceptor (IDIDT-C8) with cis-arranged alkyl side chains for the first time was synthesized.
Journal ArticleDOI
Introducing cyclic alkyl chains into small-molecule acceptors for efficient polymer solar cells
Renlong Li,Gongchu Liu,Ruihao Xie,Zhenfeng Wang,Xiye Yang,Kang An,Wenkai Zhong,Xiao-Fang Jiang,Lei Ying,Fei Huang,Yong Cao +10 more
TL;DR: In this article, a new acceptor-donor-acceptor type small molecule acceptor, namely IDT-HN, has been developed, which consists of a newly developed 2-(3-oxo-2,3,5,6,7,8-hexahydro-1H-cyclopenta[b]naphthalen-1-ylidene)malononitrile as the peripheral electron-withdrawing group and indaceno[1,2-b:5, 6-b′]dithiophene as
References
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