Photoluminescence characteristics of Mn- and Pr-doped ZnS nanoparticles optically annealed with UV illumination

Jun Woo Lee, Kyoungah Cho, Hyunsuk Kim, Jin Hyoung Kim, Byoungjun Park, Taeyong Noh, Sangsig Kim, Sung Hyun Kim

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Undoped, Mn-doped, Pr-doped, and Mn- and Pr-codoped ZnS nanoparticles were synthesized by a wet chemical method, and these nanoparticles were optically annealed in air or vacuum. In the photoluminescence (PL) spectra of the optically annealed nanoparticles, a sulfur-vacancy-related PL band at around 420 nm, a PL band associated with the 4T16A1 transition of Mn2+, and PL peaks associated with Pr-related complexes were investigated during optical annealing. The integrated PL intensities for the nanoparticles annealed in air increased more markedly with the optical annealing time than those for the nanoparticles annealed in vacuum. This increase may be explained by the photooxidation of the surface, the enhancement of the crystal quality, and the gradual diffusion of luminescent ions into the crystal lattice.

Original languageEnglish
Pages (from-to)7694-7697
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume44
Issue number10
DOIs
Publication statusPublished - 2005 Oct 11

Keywords

  • Doped nanoparticles
  • Luminescence enhancement
  • Optical annealing
  • Photoluminescence
  • UV irradiation
  • ZnS nanoparticles

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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