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 journalArticle

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 languageEnglish
Pages (from-to)409-412
Number of pages4
JournalNano Letters
Volume3
Issue number3
DOIs
Publication statusPublished - 2003 Mar 1
Externally publishedYes

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Porphyrins
ITO (semiconductors)
Photocurrents
oligomers
Oligomers
porphyrins
photocurrents
Electrodes
electrodes
augmentation
Quantum yield
monomers
Monomers
Dimers
Conversion efficiency
dimers

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Enhancement of light harvesting and photocurrent generation by ITO electrodes modified with meso,meso-linked porphyrin oligomers. / Hasobe, Taku; Imahori, Hiroshi; Yamada, Hiroko; Sato, Tomoo; Ohkubo, Kei; Fukuzumi, Shunichi.

In: Nano Letters, Vol. 3, No. 3, 01.03.2003, p. 409-412.

Research output: Contribution to journalArticle

Hasobe, Taku ; Imahori, Hiroshi ; Yamada, Hiroko ; Sato, Tomoo ; Ohkubo, Kei ; Fukuzumi, Shunichi. / Enhancement of light harvesting and photocurrent generation by ITO electrodes modified with meso,meso-linked porphyrin oligomers. In: Nano Letters. 2003 ; Vol. 3, No. 3. pp. 409-412.
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