Non-fullerene acceptor with low energy loss and high external quantum efficiency: towards high performance polymer solar cells

被引:210
作者
Li, Yongxi [1 ]
Liu, Xiaodong [2 ]
Wu, Fu-Peng [1 ]
Zhou, Yi [2 ]
Jiang, Zuo-Quan [1 ]
Song, Bo [2 ]
Xia, Yuxin [3 ]
Zhang, Zhi-Guo [4 ]
Gao, Feng [3 ]
Inganas, Olle [3 ]
Li, Yongfang [2 ,4 ]
Liao, Liang-Sheng [1 ]
机构
[1] Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Jiangsu, Peoples R China
[2] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Lab Adv Optoelect Mat, Suzhou 215123, Jiangsu, Peoples R China
[3] Linkoping Univ, Biomol & Organ Elect, IFM, S-58183 Linkoping, Sweden
[4] Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100190, Peoples R China
基金
中国博士后科学基金; 中国国家自然科学基金;
关键词
POWER CONVERSION EFFICIENCY; OPEN-CIRCUIT VOLTAGE; BAND-GAP POLYMER; SINGLE-JUNCTION; SMALL-MOLECULE; 3D STRUCTURE; DONOR; BENZODITHIOPHENE; TRANSPORT;
D O I
10.1039/c6ta00612d
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A non-fullerene electron acceptor bearing a fused 10-heterocyclic ring (indacenodithiophenoindacenodithiophene) with a narrow band gap (similar to 1.5 eV) was designed and synthesized. It possesses excellent planarity and enhanced effective conjugation length compared to previously reported fused-ring electron acceptors. When this acceptor was paired with PTB7-Th and applied in polymer solar cells, a power conversion efficiency of 6.5% was achieved with a high open circuit voltage of 0.94 V. More significantly, an energy loss as low as 0.59 eV and an external quantum efficiency as high as 63% were obtained simultaneously.
引用
收藏
页码:5890 / 5897
页数:8
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