Fabrication of CdS thin films assisted by Langmuir deposition, self-assembly, and dip-pen nanolithography

Gil Sun Lee, Ji Hwon Lee, Hyun Choi, Dong June Ahn

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Thin CdS films were fabricated by Langmuir deposition, self-assembly, and dip-pen nanolithography methods. Firstly, LB films of saturated arachidic acid and LS films of unsaturated 10,12-pentacosadiynoic acid were reacted with cadmium ions and exposed to H2S gas. Formation of CdS crystal was observed with Fourier transform infrared (FTIR) spectra and atomic force microscope (AFM). Secondly, mercaptohexadecanoic acid was self-assembled on Au substrate and was reacted with CdS colloidal particles. At pH=9.1, the density of CdS colloids immobilized on Au substrate was very high compared to one at pH=5.0. Finally, thin films of CdS were also prepared on silicon and Au substrates by cadmium chloride-coated AFM tip and successive exposure of H2S gas. Localized formation of CdS crystal was suggested with AFM and depth-profiling Auger electron microscopy (AES).

Original languageEnglish
Pages (from-to)697-704
Number of pages8
JournalKorean Journal of Chemical Engineering
Volume27
Issue number2
DOIs
Publication statusPublished - 2010 Mar 1

    Fingerprint

Keywords

  • CdS
  • Dip-pen Nanolithography
  • Langmuir-Blodgett Film
  • Langmuir-Schafer Film
  • Self-assembled Monolayers

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this