Preparation and photoelectrochemical properties of two-dimensionally organized CdS nanoparticle thin films

Tsukasa Torimoto, Naohiro Tsurnura, Masahide Miyake, Matsuhiko Nishizawa, Takao Sakata, Hirotaro Mori, Hiroshi Yoneyama

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

Two-dimensionally organized CdS nanoparticle films were prepared with the use of the Langmuir-Blodgett (LB) technique. 2-Aminoethanethiol-modified CdS nanoparticles were spread on a water subphase which contained glutaraldehyde as a cross-linking agent for binding the surface-modified CdS nanoparticles with each other, and the cross-linking reaction was undertaken under several different compressions of the CdS nanoparticle layer spread on the water subphase. Surface pressure-area isotherms of the CdS monoparticulate layer taken after the cross-linking were largely different depending on the area used for the cross-linking. By transfer of the CdS monoparticulate film prepared at the air-water interface to the 2-aminoethanethiol-modified gold substrate using the LB technique, CdS monoparticulate films containing different surface concentrations were prepared on the gold substrate. It was easily done to cumulate the monoparticulate film on the gold substrate using the same transfer technique. The prepared CdS nanoparticles films showed n-type photosensitivities which were enhanced by increasing the number of cumulation of monoparticulate films.

Original languageEnglish
Pages (from-to)1853-1858
Number of pages6
JournalLangmuir
Volume15
Issue number5
DOIs
Publication statusPublished - 1999

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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