Enhancement of light harvesting and photocurrent generation by ITO electrodes modified with meso,meso-linked porphyrin oligomers

被引：57

作者：

Hasobe, T

Imahori, H ^{[1
]}

Yamada, H

Sato, T

Ohkubo, K

Fukuzumi, S

机构：

[1] Kyoto Univ, Japan Sci & Technol Corp, PRESTO,JST, Grad Sch Engn,Dept Mol Engn,Sakyo Ku, Kyoto 6068501, Japan

[2] Osaka Univ, Japan Sci & Technol Corp, CREST, Grad Sch Engn,Dept Mat & Life Sci, Suita, Osaka 5650871, Japan

[3] Kyoto Univ, Fukui Inst Fundamental Chem, Sakyo Ku, Kyoto 6068103, Japan

来源：

NANO LETTERS | 2003年 / 3卷 / 03期

关键词：

D O I：

10.1021/nl025974z

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

ITO electrodes modified with a meso,meso-linked porphyrin oligomer have been prepared for the first time to achieve improved light-harvesting efficiency and a larger quantum yield for photocurrent generation as compared to the corresponding porphyrin monomer system. An increase in the number of the porphyrins in meso,meso-linked porphyrins results in an improvement of the photoenergy conversion efficiency per mol cm(-2) in the visible light region as well as a larger quantum yield of photocurrent generation. The relative integrated values of the photocurrents for all of the frequencies in the action spectrum per mol cm(-2) in the porphyrin dimer and tetramer systems are determined to be 2.5 and 6.5, respectively, as compared with the values of the porphyrin monomer system.

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页码：409 / 412

页数：4

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