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High-Luminance EL Devices Using Y2GeO5 Phosphor Thin Films Prepared by Magnetron Sputtering

Tadatsugu MINAMI, Youhei KOBAYASHI, Toshihiro MIYATA, Masashi YAMAZAKI

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Summary :

Thin-film electroluminescent (TFEL) devices have been newly developed using Y2GeO5 oxide phosphor thin films prepared by r.f. magnetron sputtering. Multicolor emissions were observed in TFEL devices fabricated using various impurity-activated Y2GeO5 phosphor thin films. A high-luminance TFEL device was fabricated using a Y2GeO5:Mn thin film prepared with a Mn content of 2 at.% and postannealed at 1020: luminances of 414 and 3020 cd/m2 and luminous efficiencies of 6.7 and 0.93 lm/W for yellow emission when driven at 60 Hz and 1 kHz, respectively. Newly developed oxide Y2GeO5:Mn phosphors are very promising for use as the thin-film emitting layer of TFEL devices.

Publication
IEICE TRANSACTIONS on Electronics Vol.E85-C No.11 pp.1905-1910
Publication Date
2002/11/01
Publicized
Online ISSN
DOI
Type of Manuscript
Special Section PAPER (Special Issue on Electronic Displays)
Category
EL Displays

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