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LP‐4: Late‐News Poster : A New Red Phosphor, Li‐Doped Gd 2 O 3 :Eu 3+ with a High Luminescent Efficiency at Low Voltages
Author(s) -
Park JungChul,
Moon HyeKyung,
Kim DongKuk,
Byeon SongHo,
Kim BongChul,
Suh KyungSoo
Publication year - 2000
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.1833042
Subject(s) - phosphor , cathodoluminescence , photoluminescence , doping , analytical chemistry (journal) , materials science , luminescence , brightness , lithium (medication) , field emission display , field electron emission , electron , optoelectronics , chemistry , optics , physics , medicine , chromatography , quantum mechanics , endocrinology
Li‐doped Gd 2 O 3 :Eu 3+ phosphor was developed by the conventional solid state and sol‐gel methods. The effect of lithium concentration on the emission behavior of Gd 2−x−y Li x Eu y O 3−δ was investigated by photoluminescence and cathodoluminescence measurements. At 500 V, a cathodoluminescent efficiency of ∼180 % compared to that of commercial red‐phosphor Y 2 O 3 :Eu 3+ , was observed with the nominal composition of (Gd 1.84 Li 0.08 Eu 0.08 )O 3−δ . Such a brightness is the highest among the previously reported red‐emission in the electron voltage range of 0.5 − 1 kV. This material would be a potential candidate for application in field emission display.