Donor-acceptor dyes with fluorine substituted phenylene spacer for dye-sensitized solar cells

被引：132

作者：

Chen, Bo-So ^{[1
]}

Chen, Dong-Yi ^{[1
]}

Chen, Chao-Ling ^{[2
]}

Hsu, Che-Wei ^{[2
]}

Hsu, Hui-Chu ^{[2
]}

Wu, Kuan-Lin ^{[2
]}

Liu, Shih-Hung ^{[1
]}

Chou, Pi-Tai ^{[1
]}

Chi, Yun ^{[2
]}

机构：

[1] Natl Taiwan Univ, Dept Chem, Taipei 106, Taiwan

[2] Natl Tsing Hua Univ, Dept Chem, Hsinchu 300, Taiwan

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2011年 / 21卷 / 06期

关键词：

POWER-CONVERSION EFFICIENCY; TRIPHENYLAMINE-BASED DYES; FREE ORGANIC-DYES; ELECTRON INJECTION; ENERGY CONVERSION; MEROCYANINE DYES; ADSORBING GROUPS; PERFORMANCE; DESIGN; PHOTOSENSITIZER;

D O I：

10.1039/c0jm02433c

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A new series of organic sensitizers LJB-H, LJB-F-o and LJB-F-m with triphenylamine, 3,4-ethylenedioxythiophene plus various functionalized phenylenes, and cyanoacrylic acid as the donor, pi-spacer, and anchoring group, respectively. These organic sensitizers exhibit much higher molar extinction coefficients than the parent LJ1 dye as well as reveal a remarkable fluorine substituent effect. LJB-F-m with fluoro substitution at the meta position relative to cyanoacrylic acid possesses a lower S-0-S-1 gap and weaker coupling with the TiO2 electrode (cf. LJB-H and LJB-F-o). Conversely, due to the resonance effect with respect to cyanoacrylic acid, the ortho-F-substituted LJB-F-o has a larger energy gap but stronger TiO2 affinity. As a result, LJB-F-o shows better DSSC performance with J(sc) = 15.58 mA cm(-2), V-oc = 787 mV, FF = 0.67 and eta = 8.22%.

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页码：1937 / 1945

页数：9

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