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

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Enhancement of light harvesting and photocurrent generation by ITO electrodes modified with meso,meso-linked porphyrin oligomers'. Together they form a unique fingerprint.

  • Cite this