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Cover Picture: Synthesis and Photovoltaic Properties of Polythiophene Incorporating with 3,4‐Difluorothiophene Units (Chin. J. Chem. 11/2013)
Author(s) -
Huang Linquan,
Yang Dong,
Gao Qiang,
Liu Yan,
Lu Shengmei,
Zhang Jian,
Li Can
Publication year - 2013
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201390026
Subject(s) - polythiophene , chemistry , cover (algebra) , photovoltaic system , polymer , band gap , conductive polymer , fluorine , open circuit voltage , energy conversion efficiency , optoelectronics , polymer solar cell , chin , nanotechnology , engineering physics , polymer science , voltage , organic chemistry , electrical engineering , materials science , mechanical engineering , medicine , engineering , anatomy
The cover picture shows a new polythiophene derivative PHTDFT designed for polymer solar cells. The introduction of fluorine atoms to the polymer backbones simultaneously lowers the HOMO energy level and narrows the bandgap. Benefiting from the lower HOMO, PHTDFT:PC 61 BM (1:1) polymer solar cells obtain a power conversion efficiency of 1.11% and an impressed open‐circuit voltage of 0.79 V under solar illumination AM1.5 (100 mW/cm 2 ). More details are discussed in the article by Zhang et al . on page 1385–1390.