Strong luminescing CdSe nanoparticles by surface modification with cadmium (II) hydrous oxide

Xingping Zhou, Yoshio Kobayashi, Noriaki Ohuchi, Motohiro Taketa, Atsuo Kasuya

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

CdSe nanoparticles were prepared by simply mixing Na2SSeO 3 solution with CdSO4 solution under [Cd 2+]/[Se2-] (Cd/Se) ratio of 1.2 at room temperature. The nanoparticles had an average size of 2.3 nm and showed fairly strong photoluminescence (PL) with a peak at 539 nm. Deposition of cadmium (II) hydrous oxide on the CdSe nanoparticles increased photoluminescence quantum yield from 3.1 to 34.8 %, in comparison to Rhodamine 6G aqueous solution. Both of the CdSe nanoparticles and the cadmium (II) hydrous oxide deposited on CdSe nanoparticles were characterized as of cubic structure from XRD data and the electron diffraction (ED) patterns. Also, the reason for the photoluminescence enhancement was simply elucidated.

Original languageEnglish
Pages (from-to)2835-2840
Number of pages6
JournalInternational Journal of Modern Physics B
Volume19
Issue number15-17
DOIs
Publication statusPublished - 2005 Jul 10

Keywords

  • Cadmium (II) hydrous oxide
  • CdSe
  • Deposition
  • Photoluminescence
  • Surface modification

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Condensed Matter Physics

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