A Wide-Bandgap Donor Polymer for Highly Efficient Non-fullerene Organic Solar Cells with a Small Voltage Loss

被引：340

作者：

Chen, Shangshang ^{[1
,2
]}

Liu, Yuhang ^{[1
,2
]}

Zhang, Lin ^{[3
]}

Chow, Philip C. Y. ^{[1
,2
]}

Wang, Zheng ^{[1
,2
]}

Zhang, Guangye ^{[1
,2
]}

Ma, Wei ^{[3
]}

Yan, He ^{[1
,2
,4
,5
]}

机构：

[1] Hong Kong Univ Sci & Technol, Dept Chem, Energy Inst, Kowloon, Hong Kong, Peoples R China

[2] Hong Kong Univ Sci & Technol, Hong Kong Branch, Chinese Natl Engn Res Ctr Tissue Restorat & Recon, Kowloon, Hong Kong, Peoples R China

[3] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China

[4] Hong Kong Univ Sci & Technol, Shenzhen Res Inst, 9 Yuexing First RD,Hitech Pk, Shenzhen 518057, Peoples R China

[5] South China Univ Technol, State Key Lab Luminescent Mat & Devices, Inst Polymer Optoelect Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2017年 / 139卷 / 18期

关键词：

MOLECULAR-ORIENTATION; ELECTRON-ACCEPTOR; PHOTOVOLTAICS; MORPHOLOGY; NETWORK;

D O I：

10.1021/jacs.7b01606

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

To achieve efficient non-fullerene organic solar cells, it is important to reduce the voltage loss from the optical bandgap to the open-circuit voltage of the cell: Here we report a highly efficient non-fullerene organic solar cell with a high open-circuit voltage of 1.08 V and a small voltage loss of 0.55 V. The high performance was enabled by a novel wide-bandgap (2.05 eV) donor polymer paired with a narrow-bandgap (1.63 eV) small molecular acceptor (SMA). Our morphology characterizations show that both the polymer and the SMA can maintain high crystallinity in the blend film, resulting in crystalline and small domains. As a result, our non-fullerene organic solar cells realize an efficiency of 11.6%, which is the best performance for a non-fullerene organic solar cell with such a small voltage loss.

引用

页码：6298 / 6301

页数：4

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