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High‐Performance Solution‐Processed Small‐Molecule Solar Cells Based on a Dithienogermole‐Containing Molecular Donor
Author(s) -
Sun Yanming,
Seifter Jason,
Huo Lijun,
Yang Yali,
Hsu Ben B. Y.,
Zhou Huiqiong,
Sun Xiaobo,
Xiao Steven,
Jiang Lei,
Heeger Alan J.
Publication year - 2015
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201400987
Subject(s) - small molecule , materials science , fullerene , energy conversion efficiency , molecule , nanotechnology , optoelectronics , organic chemistry , chemistry , biochemistry
A novel dithienogermole‐containing a small‐molecule donor termed p ‐DTG(FBTTh 2 ) 2 is synthesized and characterized, and its optical, thermal, and electrical properties are found to be comparable to its silicon analogue ( p ‐DTS(FBTTh 2 ) 2 ). Solar cells based on an active layer of p ‐DTG(FBTTh 2 ) 2 and the fullerene PC 70 BM exhibit a power conversion efficiency of up to 6.9%, indicating that p ‐DTG(FBTTh 2 ) 2 is an excellent small‐molecule donor.