Preparation of CdS/ZnO Core/shell Structured Nanoparticies by Hydrothermal Method

Abstract

CdS and ZnO capped CdS (CdS/ZnO) semiconductor nanoparticles were synthesized via hydrothermal method by thermal decomposition of the cysteine-cadmium and Zn(OH)4(2-) complex precursors. Both of the photoluminescence properties and structure characterization confirmed the core/shell structure as expected. Compared to CdS nanoparticles, the band-gap emission of CdS/ZnO was greatly improved, that means the capping layer of ZnO modified the surface of CdS and reduced the surface defects effectively. ED and XRD confirmed the formation of hexagon phased CdS and the TEM image indicated the size of CdS/ZnO was about 20 nm.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2002
Accession Number
ADP012663

Entities

People

  • Chunhua Yan
  • Chunsheng Liao
  • Lingdong Sun
  • Xuefeng Fu

Organizations

  • Peking University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Chemical Compounds
  • Chemistry
  • Cysteine
  • Decomposition
  • Diffraction
  • Electron Microscopy
  • Emission
  • Energy Bands
  • Materials
  • Measurement
  • Microscopes
  • Optical Properties
  • Particles
  • Photoluminescence
  • Reaction Time
  • Spectra
  • X Rays

Fields of Study

  • Materials science

Readers

  • Aviation Safety Risk Assessment.
  • Nanocomposite Materials Science

Technology Areas

  • Biotechnology
  • Microelectronics
  • Microelectronics - Graphene