Efficient triphenylamine dyes for solar cells: Effects of alkyl-substituents and π-conjugated thiophene unit

被引：116

作者：

Shen, Ping ^{[1
,2
]}

Liu, Yijiang ^{[1
,2
]}

Huang, Xianwei ^{[1
,2
]}

Zhao, Bin ^{[1
,2
]}

Xiang, Na ^{[1
,2
]}

Fei, Junjie ^{[1
,2
]}

Liu, Liming ^{[1
,2
]}

Wang, Xueye ^{[1
,2
,3
]}

Huang, Hui ^{[1
,2
]}

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

机构：

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

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

[3] Xiangtan Univ, Key Lab Environm Friendly Chem & Applicat, Minist Educ, Xiangtan 411105, Peoples R China

来源：

DYES AND PIGMENTS | 2009年 / 83卷 / 02期

关键词：

Triphenylamine moiety; Oligothiophenes; pi-Conjugated unit; Solar-to-electricity conversion efficiency; Dye-sensitized solar cells; Photovoltaic performances; NANOCRYSTALLINE TIO2 ELECTRODES; ORGANIC-DYES; CHARGE-TRANSFER; COUMARIN DYES; MOLECULAR PHOTOVOLTAICS; STRUCTURAL MODIFICATION; SENSITIZERS; PERFORMANCE; LIGHT; CHROMOPHORES;

D O I：

10.1016/j.dyepig.2009.04.005

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Several triplienylamine dyes, both with and without an n-hexyl-substituted oligothiophene as pi-conjugated linker, were designed, synthesized and utilised in dye-sensitized, nanocrystalline, TiO2 solar cells. The effects of both the length of the pi-conjugated unit and of the alkyl chain upon the photophysical, electrochemical and photovoltaic properties of the dyes were studied. Between I and 3 thiophene units impart superior solar-to-electricity conversion efficiency and the hexyl chains also markedly improve both short-circuit photocurrent density and open-circuit photovoltage, which result in relatively high solar-to-electricity conversion efficiency. In EtOH solution, a dye-sensitized solar cell based on 2-cyano-3-(5-(4-(diphenylamino) phenyl)-4-hexylthioplienyl-2-yl) acrylic acid with one hexyl-substituted thiophene, pi-conjugated unit, exhibited the largest observed maximum solar-to-electricity conversion efficiency of 7.26% under simulated AM 1.5 G solar irradiation (100 mW/cm(2)). (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：187 / 197

页数：11

共 48 条

[1] Use of the extended one-pot (EOP) procedure for the preparation of ethynylated thiophene derivatives and related palladium-ethynylthiophene organometallic oligomers [J].