Alkyl-functionalized organic dyes for efficient molecular photovoltaics

被引：826

作者：

Koumura, Nagatoshi

Wang, Zhong-Sheng

Mori, Shogo

Miyashita, Masanori

Suzuki, Eiji

Hara, Kohjiro

机构：

[1] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058565, Japan

[2] Shinshu Univ, Dept Fine Mat Engn, Nagano 3868567, Japan

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2006年 / 128卷 / 44期

关键词：

D O I：

10.1021/ja0645640

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We designed and synthesized new alkyl-functionalized organic dyes, MK-1 and MK-2, for dye-sensitized solar cells (DSSCs). Based on the MK-2 dye, a high performance of efficiency (η, 7.7%; short-circuit current density Jsc = 14.0 mA cm-2, open-circuit voltage Voc = 0.74 V, and fill factor FF = 0.74) was achieved under AM 1.5 G irradiation (100 mW cm-2). Remarkably, the relatively higher Voc for DSSCs based on MK-1 and MK-2 dyes, which have long alkyl chains, were observed among the organic dyes caused by the increasing of the electron lifetime in the conduction band of TiO2. Our molecular design of alkyl-functionalized dyes strongly suggests the promising performance of molecular photovoltaics based on organic dyes. Copyright © 2006 American Chemical Society.

引用

页码：14256 / 14257

页数：2

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