Formation and spectroscopic characterization of mono-dispersed CdSe nanocrystals

Yan Ming Miao, Chao Rong Li, Li Cao, Rui Bin Liu, Yu Ping He, Si Shen Xie, Bing Suo Zou*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

In this article, mono-dispersed hexagonal structure CdSe nanocrystals with polyhedron shape were prepared by an open solvent thermal reaction. They show a discrete excitonic transition structure in the absorption spectra and the minimal photoluminescence (PL) peak full-width at half-maximum of 19 nm. The PL quantum yield is about 60%. Transmission electron micrographs, high-resolution transmission electron micrographs, x-ray powder diffraction patterns, UV-vis absorption spectra and PL spectra were obtained for the as-prepared CdSe nanocrystals. The size of the CdSe nanocrystals can be tuned by changing the reaction temperature or time. Due to the improved synthesis method, a different growth mechanism of the CdSe nanocrystals is discussed.

Original languageEnglish
Pages (from-to)2262-2268
Number of pages7
JournalChinese Physics
Volume14
Issue number11
DOIs
Publication statusPublished - 1 Nov 2005
Externally publishedYes

Keywords

  • Formation
  • Mono-dispersed
  • Nanocrystals

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