Surfactant-assisted room-temperature synthesis of CdSe nanoclusters

R. Sathyamoorthy, V. Manjuladevi, P. Sudhagar, S. Senthilarasu, U. Pal

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

CdSe nanoclusters of about 22 nm average size have been synthesized by a surfactant-assisted chemical method at room temperature. The as-grown nanoclusters were near stoichiometric and 70% of them were of hexagonal wurtzite crystalline phase. With undefined shapes, the crystalline nanoclusters remained arbitrarily oriented in a compact powder form. The morphology and structural behavior of the nanoclusters were studied by scanning electron microscopy and transmission electron microscopy. Thermal stability of the nanoclusters was studied by thermogravimetric analysis. Presence of very small clusters (<5 nm) in the sample revealed a blue shifted excitonic absorption peak along with the excitonic peak of bigger clusters.

Original languageEnglish
Pages (from-to)20-24
Number of pages5
JournalMaterials Chemistry and Physics
Volume105
Issue number1
DOIs
Publication statusPublished - 15 Sep 2007

Keywords

  • CdSe nanoclusters
  • Morphology
  • Structure
  • Surfactant-assisted synthesis

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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