ITE Technical Report
Online ISSN : 2424-1970
Print ISSN : 1342-6893
ISSN-L : 1342-6893
25.45
Session ID : IDY2001-111
Conference information
Blue emitting CaAl_2O_4:Eu^<2+> phosphor thin films fabricated by PLD technique
Kennosuke Kakehi, Shingo Honoda, Takashi Kunimoto, Koutoku Ohmi, Shosaku Tanaka, Hiroshi Kobayashi
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Keywords: phosphor thin film, CaAl_2O_4:Eu^<2+>, PLD technique, annealing
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Abstract

Blue emitting Eu^<2+> doped CaAl_2O_4 phosphor thin films were obtained by pulsed laser deposition technique and post-annealing. As-grown films were amorphos and showed weak red photoluminescence(PL)due to the trivalent Eu ion. By annealing in reducing atmosphere(N_2/H_2:2% mixed gas)at 950℃ for 3 hours, the film was crystalized and showed the PL emission band peaking at about 447nm, which is originated from the 4f^65d to 4f^7 transiton of the divalent Eu ion.

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© 2001 The Institute of Image Information and Television Engineers
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