Degradation proof modification of ZnS-based phosphors with ZnO nanoparticles

T. Igarashi, T. Kusunoki, K. Ohno, Tetsuhiko Isobe, M. Senna

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

ZnS:Ag,Cl phosphor particles were coated discretely by ZnO nanoparticles to prevent degradation by electron bombardment at 7kV. The degradation of ZnS:Ag,Cl modified with ZnO nanosize particles was reduced by 40% after 9h exposure to 7kV electron beams, in comparison with that without ZnO nanosize particles. The predominant mechanism of degradation prevention is to suppress surface oxidation of ZnS by residual oxygen during cathodoluminescence (CL) experiment. Increased electric conduction and associated protection from local heating are the main reasons for degradation suppression, as confirmed by experimental measurement of degradation for the insulating ZnS:Ag,Cl phosphor.

Original languageEnglish
Pages (from-to)1317-1324
Number of pages8
JournalMaterials Research Bulletin
Volume36
Issue number7-8
DOIs
Publication statusPublished - 2001 May 6

Fingerprint

Phosphors
phosphors
degradation
Nanoparticles
Degradation
nanoparticles
Cathodoluminescence
electron bombardment
cathodoluminescence
Electron beams
retarding
electron beams
Oxygen
Heating
conduction
Oxidation
oxidation
heating
Electrons
oxygen

Keywords

  • Cl
  • Degradation
  • Nanosize particles
  • ZnO
  • ZnS:Ag

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Degradation proof modification of ZnS-based phosphors with ZnO nanoparticles. / Igarashi, T.; Kusunoki, T.; Ohno, K.; Isobe, Tetsuhiko; Senna, M.

In: Materials Research Bulletin, Vol. 36, No. 7-8, 06.05.2001, p. 1317-1324.

Research output: Contribution to journalArticle

Igarashi, T. ; Kusunoki, T. ; Ohno, K. ; Isobe, Tetsuhiko ; Senna, M. / Degradation proof modification of ZnS-based phosphors with ZnO nanoparticles. In: Materials Research Bulletin. 2001 ; Vol. 36, No. 7-8. pp. 1317-1324.
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