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Photoluminescence of ZnO nanoparticles prepared by a low-temperature colloidal chemistry method

Authors
Journal
Materials Letters
0167-577X
Publisher
Elsevier
Publication Date
Volume
61
Identifiers
DOI: 10.1016/j.matlet.2007.01.026
Keywords
  • Nanoparticles
  • Semiconductors
  • Zno
  • Luminescence
Disciplines
  • Chemistry

Abstract

Abstract ZnO nanoparticles have been synthesized by a low-temperature colloidal chemistry method using ethylene glycol as the reaction medium. Crystalline ZnO nanoparticles were formed at a temperature as low as 150 °C. The crystallite size of the ZnO nanoparticles ranged from 8 to 20 nm. The synthesized ZnO nanoparticles exhibited size-dependent photoluminescence. Photoluminescence of the ZnO nanoparticles depended largely on the post-annealing temperature. Both DL and UV emissions were suppressed at a lower post-annealing temperature of 300 °C; however they were recovered at a higher annealing temperature of 900 °C.

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