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Novel Thiazolo[5,4‐ d ]thiazole‐Based Organic Dyes for Quasi‐Solid‐State Dye‐Sensitized Solar Cells
Author(s) -
Zhang Weiyi,
Feng Quanyou,
Wang ZhongSheng,
Zhou Gang
Publication year - 2013
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201201202
Subject(s) - dye sensitized solar cell , thiazole , absorbance , alkoxy group , moiety , photochemistry , electrochemistry , solid state , molecule , energy conversion efficiency , chemistry , photovoltaic system , materials science , quasi solid , organic chemistry , electrode , optoelectronics , chromatography , electrolyte , biology , ecology , alkyl
A series of novel metal‐free organic dyes containing the thiazolo[5,4‐ d ]thiazole moiety were designed and synthesized for quasi‐solid‐state dye‐sensitized solar cells (DSSCs). Different alkoxy chains were introduced into the electron donor part of the dye molecules for comparison. The optical, electrochemical, and photovoltaic properties for all sensitizers were systematically investigated. It was found that the sensitizers with the different alkoxy groups have similar photophysical and electrochemical properties, such as absorbance and energy levels, owing to their close chemical structures. However, the quasi‐solid‐state DSSCs based on the resulting sensitizers exhibit different performance parameters. The quasi‐solid‐state DSSC based on sensitizer FNE74 with two octyloxy chains possessed the highest solar energy conversion efficiency of 5.10 % under standard AM 1.5G sunlight illumination without the use of coadsorbant agents.