Effects of the S/Zn Ratio on the Photoluminescence Properties of Color-Tunable ZnS:Mn Nanophosphors

Ying Chien Fang, Sheng-Yuan Chu, Hung Cheng Chen, Po Ching Kao, In-Gann Chen, Chii-Shyang Hwang

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

In this study, color-tunable nanocrystalline phosphors of ZnS: 0.5 mol % Mn 2+ (SZn ratio = 1, 0.85, 0.75, 0.65, 0.5) were synthesized at a low temperature using the solid-state reaction method. The emission spectra of ZnS: 0.5 mol % Mn 2+ samples excited at 325 nm exhibited two emission peaks. The blue-light emission is due to the donor-acceptor recombination in the ZnS host, and the orange-light emission is attributed to the T14 → A16 transition of Mn 2+ ions. The chromaticity coordinates of the phosphors changed from orange, near white, to blue with decreasing SZn ratio. The local strain and the quantum efficiency of the ZnS: Mn 2+ phosphors are also investigated.

Original languageEnglish
JournalJournal of the Electrochemical Society
Volume156
Issue number4
DOIs
Publication statusPublished - 2009 Mar 4

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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