ITE Technical Report
Online ISSN : 2424-1970
Print ISSN : 1342-6893
ISSN-L : 1342-6893
27.4
Session ID : IDY2003-10
Conference information
Suppression of Formation of Sr Vacancies in SrS:Ce Thin Film EL Devices by Alkali Metal Doping
Haruki FUKADAAsuka SASAKURATakahiro KIMURAKoutoku OHMIShosaku TANAKAHiroshi KOBAYASHIYoichiro NAKANISHI
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Abstract
Alkali metal doped SrS:Ce,M (M=Na, K, or Rb) thin film EL devices have been prepared by electron-beam evaporation. Alkali metal doping causes suppression of formation of Sr vacancies, and results in decrease of Ce^<3+>-V_<Sr> complex center formation. Among those dopants, Rb is the most effective. The SrS:Ce,Rb phosphor powder prepared with Ce concentration of 1.0 mol% shows the strongest photoluminescence with the bluish-green luminescence due to isolated Ce^<3+> centers.
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© 2003 The Institute of Image Information and Television Engineers
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