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An Azulene‐Containing Low Bandgap Small Molecule for Organic Photovoltaics with High Open‐Circuit Voltage
Author(s) -
Chen Yao,
Zhu Youqin,
Yang Daobin,
Zhao Suling,
Zhang Lei,
Yang Lin,
Wu Jianglin,
Huang Yan,
Xu Zheng,
Lu Zhiyun
Publication year - 2016
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201603399
Subject(s) - azulene , band gap , materials science , open circuit voltage , optoelectronics , organic solar cell , photovoltaics , voltage , photovoltaic system , photochemistry , chemistry , electrical engineering , polymer , composite material , engineering
A simple azulene‐containing squaraine dye ( AzUSQ ) showing bandgap of 1.38 eV and hole mobility up to 1.25×10 −4 cm 2 V −1 s −1 was synthesized. With its low bandgap, an organic photovoltaic (OPV) device based on it has been made that exhibits an impressive open‐circuit voltages ( V oc ) of 0.80 V. Hence, azulene might be a promising structural unit to construct OPV materials with simultaneous low bandgap, high hole mobility and high V oc .