Molecular hydrogen evolution by organic p/n bilayer film of phthalocyanine/fullerene in the entire visible-light energy region

Toshiyuki Abe, Shunsuke Tobinai, Naohiro Taira, Junpei Chiba, Takashi Itoh, Keiji Nagai

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)

Abstract

This article presents a novel approach to photochemical energy conversion by employing organic compounds. We demonstrated that water can be photoelectrochemically split into H2 and O2 using an organic photodevice responsive to the entire visible-light energy range of <750 nm. When an organic p/n bilayer of metal-free phthalocyanine (H 2Pc, a p-type semiconductor) and fullerene (C60, an n-type semiconductor) was applied to a photocathode in the water phase, H2 was evolved at Pt-coated C60 along with the conduction of the electron carriers photogenerated at the p/n interface, concurrently yielding O2 at the counter electrode. This is the first example of C 60 participation in H2 evolution: a mechanism was proposed, involving the formation of an active species (i.e., C 602-) on the basis of the results of in situ spectroelectrochemical measurements.

Original languageEnglish
Pages (from-to)7701-7705
Number of pages5
JournalJournal of Physical Chemistry C
Volume115
Issue number15
DOIs
Publication statusPublished - 2011 Apr 21

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

Fingerprint Dive into the research topics of 'Molecular hydrogen evolution by organic p/n bilayer film of phthalocyanine/fullerene in the entire visible-light energy region'. Together they form a unique fingerprint.

Cite this