ITE Technical Report
Online ISSN : 2424-1970
Print ISSN : 1342-6893
ISSN-L : 1342-6893
27.4
Session ID : IDY2003-3
Conference information
Two-Wavelength Excited Photoluminescence of a Y_2O_2S:Eu^<3+> Phosphor Material
Norihiko KAMATAWataru OKAMOTONaoto KIJIMA
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CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract
The intensity change of a photoluminescence (PL) due to the addition of a below-gap excitation (BGE) light reveals the properties of a below-gap state quantitatively. We observed a transient PL of Eu^<3+> due to the BGE in a Y_2O_2S:Eu^<3+> phosphor, and studied its Eu^<3+> concentration dependence. The result indicates that the trap center originates from a native defect of the host crystal, not from the Eu^<3+> incorporation.
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© 2003 The Institute of Image Information and Television Engineers
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