Premium
Triplet Tellurophene‐Based Acceptors for Organic Solar Cells
Author(s) -
Yang Lei,
Gu Wenxing,
Lv Lei,
Chen Yusheng,
Yang Yufei,
Ye Pan,
Wu Jianfei,
Hong Ling,
Peng Aidong,
Huang Hui
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201712011
Subject(s) - organic solar cell , chemistry , acceptor , fullerene , ring (chemistry) , molecule , photochemistry , exciton , diffusion , energy conversion efficiency , optoelectronics , materials science , organic chemistry , physics , polymer , quantum mechanics , thermodynamics , condensed matter physics
Triplet materials have been employed to achieve high‐performing organic solar cells (OSCs) by extending the exciton lifetime and diffusion distances, while the triplet non‐fullerene acceptor materials have never been reported for bulk heterojunction OSCs. Herein, for the first time, three triplet molecular acceptors based on tellurophene with different degrees of ring fusing were designed and synthesized for OSCs. Significantly, these molecules have long exciton lifetime and diffusion lengths, leading to efficient power conversion efficiency (7.52 %), which is the highest value for tellurophene‐based OSCs. The influence of the extent of ring fusing on molecular geometry and OSCs performance was investigated to show the power conversion efficiencies (PCEs) continuously increased along with increasing the extent of ring fusing.