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

Research output: Contribution to journal › Article › peer-review

57 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
Externally published	Yes

ASJC Scopus subject areas

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

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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.",

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T1 - Enhancement of light harvesting and photocurrent generation by ITO electrodes modified with meso,meso-linked porphyrin oligomers

AU - Hasobe, Taku

AU - Imahori, Hiroshi

AU - Yamada, Hiroko

AU - Sato, Tomoo

AU - Ohkubo, Kei

AU - Fukuzumi, Shunichi

PY - 2003/3/1

Y1 - 2003/3/1

N2 - 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.

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

Abstract

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