Electrodeposition of nanocrystalline CdSe thin films from dimethyl sulfoxide solution: Nucleation and growth mechanism, structural and optical studies

R. Henríquez, A. Badán, P. Grez, EDUARDO CARLO MUÑOZ CARTAGENA, J. Vera, E. A. Dalchiele, R. E. Marotti, H. Gómez

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

Cadmium selenide (CdSe) nanocrystalline semiconductor thin films have been synthesized by electrodeposition at controlled potential based in the electrochemical reduction process of molecular selenium in dimethyl sulfoxide (DMSO) solution. The nucleation and growth mechanism of this process has been studied. The XRD pattern shows a characteristic polycrystalline hexagonal wurtzite structure with a slight (1 0 1 0) crystallographic preferred orientation. The crystallite size of nanocrystalline CdSe thin films can be simply controlled by the electrodeposition potential. A quantum size effect is deduced from the correlation between the band gap energy and the crystallite size.

Original languageEnglish
Pages (from-to)4895-4901
Number of pages7
JournalElectrochimica Acta
Volume56
Issue number13
DOIs
StatePublished - 1 May 2011
Externally publishedYes

Keywords

  • CdSe
  • DMSO
  • Electrodeposition
  • Nanocrystalline thin film

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