Novel iminocoumarin dyes as photosensitizers for dye-sensitized solar cell

被引：48

作者：

Kandavelu, Velappan ^{[3
]}

Huang, Hsin-Sian ^{[3
]}

Jian, Jia-Liang ^{[2
]}

Yang, Thomas C. -K. ^{[2
,3
]}

Wang, Kun-Li ^{[2
,3
]}

Huang, Sheng-Tung ^{[1
]}

机构：

[1] Natl Taipei Univ Technol, Inst Biotechnol, Taipei 106, Taiwan

[2] Natl Taipei Univ Technol, Inst Chem Engn, Taipei 106, Taiwan

[3] Natl Taipei Univ Technol, Dept Chem Engn & Biotechnol, Taipei 106, Taiwan

来源：

SOLAR ENERGY | 2009年 / 83卷 / 04期

关键词：

Nanocrystalline TiO2; Iminocoumarin; Dye-sensitized solar cells; ACID; ZINC;

D O I：

10.1016/j.solener.2008.10.002

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Novel iminocoumarin dyes (2a-c and 3a-c) having carboxyl and hydroxyl anchoring groups onto the dyes skeletons have been designed and synthesized for the application of dye-sensitized nanocrystalline TiO2 solar cells (DSSCs). The photophysical and electrochemical studies showed that these iminocoumarin dyes are suitable as light harvesting sensitizers in DSSC application. The dyes having carboxyl and hydroxyl anchoring groups (2a-c) showed better efficiency when compared to the dyes having carboxyl group (3a-C) alone. The cell consisted of dye 2a generated the highest solar-to-electricity conversion efficiency (eta) of 0.767% (open circuit voltage (V-oc) = 0.491 V, short circuit photocurrent density (J(sc)) = 2.461 mA cm(-2), fill factor (ff) = 0.635) under simulated AM 1.5 irradiation (1000 W m(-2)) with a total semiconductor area of 0.25 cm(2). The corresponding incident photon-to-current conversion efficiency (IPCE) of the above cell was 21.38%. The overall low efficiency of the dyes is ascribed to the lack of light harvesting ability at longer wavelength region. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：574 / 581

页数：8

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