Fullerene-based supramolecular nanoclusters with poly[2-methoxy-5-(2'- ethylhexyioxy)-p-phenylenevinylene] for light energy conversion

Taku Hasobe, Shunichi Fukuzumi, Prashant V. Kamat, Hideyuki Murata

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Organized composite molecular nanoassemblies of fullerene and poly[2-methoxy-5-(2'-ethylhexyloxy)-p-phenylenevinylene] (MEH-PPV) prepared in acetonitrile/toluene mixed solvent absorb light over the entire spectrum of visible light. The highly colored composite clusters can be assembled as a three-dimensional array onto nanostructured SnO2 films by electrophoretic deposition approach. The composite cluster films exhibit an incident photon-to-photocurrent efficiency (IPCE) as high as 18%, which is significantly higher than that of a molecular assembly composed of 5,10,15,20-tetrakis(3,5-di-tert-butylphenyl)-21H,23H-porphyrin (H2P) and C60 prepared in the same manner (4%). The maximum IPCE value increases to 25% at an applied bias potential of 0.2V vs saturated calomel reference electrode (SCE). The power conversion efficiency of a MEH-PPV and C60 assembly-modified electrode is determined to be 0.24%. The photocurrent generation properties observed with MEH-PPV and C60 clusters demonstrate the synergy of these systems towards yielding efficient photoinduced charge separation within these composite nanoclusters.

Original languageEnglish
Pages (from-to)1223-1229
Number of pages7
JournalJapanese Journal of Applied Physics
Volume47
Issue number2 PART 2
DOIs
Publication statusPublished - 2008 Feb 15
Externally publishedYes

Fingerprint

Nanoclusters
energy conversion
Fullerenes
nanoclusters
Energy conversion
fullerenes
Photocurrents
photocurrents
composite materials
Composite materials
Photons
assembly
Electrodes
electrodes
Porphyrins
photons
polarization (charge separation)
Acetonitrile
porphyrins
Conversion efficiency

Keywords

  • Fullerene
  • MEH-PPV
  • Organic solar cell
  • Porphyrin
  • Supramolecular assembly

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Fullerene-based supramolecular nanoclusters with poly[2-methoxy-5-(2'- ethylhexyioxy)-p-phenylenevinylene] for light energy conversion. / Hasobe, Taku; Fukuzumi, Shunichi; Kamat, Prashant V.; Murata, Hideyuki.

In: Japanese Journal of Applied Physics, Vol. 47, No. 2 PART 2, 15.02.2008, p. 1223-1229.

Research output: Contribution to journalArticle

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