An oligothiophene dye with triphenylamine as side chains for efficient dye-sensitized solar cells

被引：16

作者：

Shang, Huixia ^{[1
,2
,3
]}

Jiang, Kejian ^{[1
,2
]}

Zhan, Xiaowei ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China

[3] Handan Coll, Dept Chem, Handan 056005, Peoples R China

来源：

ORGANIC ELECTRONICS | 2012年 / 13卷 / 11期

关键词：

Dye-sensitized solar cell; Organic dye; Oligothiophene; Triphenylamine; FREE ORGANIC-DYES; HIGHLY-EFFICIENT; CONVERSION EFFICIENCY; COUMARIN-DYE; DESIGN;

D O I：

10.1016/j.orgel.2012.07.021

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel oligothiophene-cyanoacrylic acid photosensitizer with two triphenylamine side chains (7T-2TPA) is designed and synthesized for dye-sensitized solar cells. 7T-2TPA exhibits broad (250-600 nm) and strong absorption (epsilon = 5.0 x 10(4) L mol(-1) cm(-1) at 496 nm). The optical band gap (E-g) is estimated from the onset absorption edge to be 2.07 eV. The oxidation potential E-ox and reduction potential E-red vs NHE of the dye is 0.93 and -1.14 V. respectively. Dye-sensitized solar cell (DSSC) based on 7T-2TPA exhibits an open-circuit voltage (V-oc) of 724 mV, a short-circuit current density (J(sc)) of 16.28 mA cm(-2), a fill factor (FF) of 0.684 and a power conversion efficiency of 8.06%. The efficiency of 8.06% is similar to that for widely used N719-based cell fabricated and measured under the same conditions. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：2395 / 2400

页数：6

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