Low-cost dyes based on methylthiophene for high-performance dye-sensitized solar cells

被引：58

作者：

Tian, Zongfang ^{[1
,2
,3
]}

Huang, Meihua ^{[1
,2
,3
]}

Zhao, Bin ^{[1
,2
,3
,4
]}

Huang, Hui ^{[1
,2
,3
]}

Feng, Xiaoming ^{[1
,2
,3
]}

Nie, Yujuan ^{[1
,2
,3
]}

Shen, Ping ^{[1
,2
,3
]}

Tan, Songting ^{[1
,2
,3
,4
]}

机构：

[1] Xiangtan Univ, Coll Chem, Xiangtan 411105, Peoples R China

[2] Xiangtan Univ, Key Lab Environmentally Friendly Chem & Applicat, Xiangtan 411105, Peoples R China

[3] Xiangtan Univ, Minist Educ, Xiangtan 411105, Peoples R China

[4] Xiangtan Univ, Coll Hunan Prov, Key Lab Adv Funct Polymer Mat, Xiangtan 411105, Peoples R China

来源：

DYES AND PIGMENTS | 2010年 / 87卷 / 03期

基金：

高等学校博士学科点专项科研基金;

关键词：

Dye-sensitized solar cells; Metal-free organic dyes; Triphenylamine dyes; Methylthiophene; Vinylene methylthiophene; Photovoltaic performances; NANOCRYSTALLINE TIO2 ELECTRODES; ORGANIC-DYES; CHARGE-TRANSFER; TETRAHYDROQUINOLINE DYES; CONVERSION-EFFICIENCY; TRIPHENYLAMINE DYES; MOLECULAR DESIGN; COUMARIN DYES; DERIVATIVES; PHOTOSENSITIZATION;

D O I：

10.1016/j.dyepig.2010.03.029

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Three donor-acceptor, pi-conjugated (D-pi-A) dyes containing methylthiophene or vinylene methylthiophene as pi-conjugated spacer were utilised in dye-sensitized nanocrystalline TiO2 solar cells. The relationship between the structure of the dyes and their photophysical, electrochemical and photovoltaic properties was investigated systematically. The vinyl unit, introduced as the pi-conjugated spacer, leads to unfavorable back-electron transfer and decrease of the open-circuit voltage. A dye-sensitized solar cell based on 2-cyano-3-(5-(4-(diphenylamino)phenyl)-4-methylthiophenyl-2-yl) acrylic acid displayed the most efficient solar-to-electricity conversion efficiency of the dyes with a maximum eta value of 8.27% (V-oc = 0.72 V, J(sc) = 15.76 mA cm(-2), FF = 0.73) under simulated AM 1.5 G solar irradiation (100 mW cm(-2)). (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：181 / 187

页数：7

共 47 条

[1] Dye-Sensitized Solar Cells with a High Absorptivity Ruthenium Sensitizer Featuring a 2-(Hexylthio)thiophene Conjugated Bipyridine [J].