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

Taku Hasobe; Hiroshi Imahori; Hiroko Yamada; Tomoo Sato; Kei Ohkubo; Shunichi Fukuzumi

doi:10.1021/nl025974z

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

Taku Hasobe, Hiroshi Imahori, Hiroko Yamada, Tomoo Sato, Kei Ohkubo, Shunichi Fukuzumi

Department of Chemistry

Research output: Contribution to journal › Article

56 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	409-412
Number of pages	4
Journal	Nano Letters
Volume	3
Issue number	3
DOIs	https://doi.org/10.1021/nl025974z
Publication status	Published - 2003 Mar 1

ASJC Scopus subject areas

Bioengineering
Chemistry(all)
Materials Science(all)
Condensed Matter Physics
Mechanical Engineering

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Hasobe, T., Imahori, H., Yamada, H., Sato, T., Ohkubo, K., & Fukuzumi, S. (2003). Enhancement of light harvesting and photocurrent generation by ITO electrodes modified with meso,meso-linked porphyrin oligomers. Nano Letters, 3(3), 409-412. https://doi.org/10.1021/nl025974z

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AU - Ohkubo, Kei

AU - Fukuzumi, Shunichi

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