Bistriphenylamine-based organic sensitizers with high molar extinction coefficients for dye-sensitized solar cells

被引：17

作者：

Chang, Dong Wook ^{[1
]}

Tsao, Hoi Nok ^{[2
]}

Salvatori, Paolo ^{[3
,4
]}

De Angelis, Filippo ^{[3
,4
]}

Graetzel, Michael ^{[2
]}

Park, Su-Moon ^{[5
]}

Dai, Liming ^{[5
,6
]}

Lee, Hyo Joong ^{[7
]}

Baek, Jong-Beom ^{[5
]}

Nazeeruddin, Mohammad K. ^{[2
]}

机构：

[1] Catholic Univ Daegu, Dept Chem Systemat Engn, Hayang 712702, Gyungbuk, South Korea

[2] Swiss Fed Inst Technol, Stn 6, Lab Photon & Interfaces, Inst Chem Sci & Engn,Sch Basic Sci, CH-1015 Lausanne, Switzerland

[3] Univ Perugia, Ist CNR Sci & Tecnol Mol ISTM CNR, I-06123 Perugia, Italy

[4] Univ Perugia, Dipartimento Chim, I-06123 Perugia, Italy

[5] Ulsan Natl Inst Sci & Technol UNIST, Interdisciplinary Sch Green Energy, Low Dimens Carbon Mat Ctr, Ulsan 689798, South Korea

[6] Case Western Reserve Univ, Dept Macromol Sci & Engn, Cleveland, OH 44106 USA

[7] Chonbuk Natl Univ, Dept Chem, Jeonju 561756, South Korea

来源：

RSC ADVANCES | 2012年 / 2卷 / 15期

基金：

新加坡国家研究基金会;

关键词：

CHARGE-TRANSFER; CONVERSION; MOLECULES;

D O I：

10.1039/c2ra20798b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A series of novel bistriphenylamine-based organic sensitizers (coded as RC-dyes) with high molar extinction coefficients (>5.0 x 10(4) M-1 cm(-1)) have been synthesized for dye-sensitized solar cells (DSSCs). By changing the length of the pi-conjugation bridge thiophene from zero to two between the donor and the acceptor part, the range of absorption and its corresponding photon-to-current conversion was modulated gradually to the low energy region in the visible spectrum. Based on the electrochemical and theoretical investigations on the electronic and geometrical structure, RC dyes were shown to be a promising candidate for efficient metal-free organic sensitizers with strong light absorption. Among RC dyes (11 similar to 13) tested, the highest power conversion efficiency of 5.67% was obtained from RC-13 with a short circuit current of 10.78 mA cm(-2), an open circuit voltage of 0.71 V, and a fill factor of 0.74 under standard AM 1.5 measurement conditions.

引用

页码：6209 / 6215

页数：7

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