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SalenZn‐bridged D‐π‐A Dyes For Dye‐Sensitized Solar Cells
Author(s) -
Jia Yongjian,
Gou Faliang,
Fang Ran,
Jing Huanwang,
Zhu Zhenping
Publication year - 2014
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201300924
Subject(s) - chemistry , triphenylamine , dye sensitized solar cell , photochemistry , alkyl , electrochemistry , electron donor , energy conversion efficiency , absorption (acoustics) , excited state , acceptor , electron acceptor , benzoic acid , organic chemistry , electrode , optoelectronics , catalysis , electrolyte , physics , nuclear physics , acoustics , condensed matter physics
A series of SalenZn based dyes with triphenylamine derivatives as the donor, benzoic acid as the acceptor, and coplanar Salen complexes as the spacer have been designed and synthesized for dye‐sensitized solar cells. The absorption, electrochemical, and photovoltaic properties for all sensitizers have been systematically investigated. When the tail length of the alkyl substituents is increased from C‐0 to C‐8 on the donor part, the efficiency of its DSSC augments evidently. It is found that the incorporation of bis‐carboxyl groups instead of the single carboxyl group as anchoring groups induces a remarkable enhancement of the electron injection efficiency from the excited dyes to the TiO 2 semiconductor and generates higher electron density and voltage.