| 简介 |
PROBLEM TO BE SOLVED : To provide a rare earth oxide phosphor exhibiting excellent light-emitting properties and a light-emitting device using the same.
SOLUTION : The rare earth oxide phosphor represented by general formula below and having a cubic crystal structure gives high emission luminance by electron beam excitation, and affords a light emitting device exhibiting excellent light-emitting properties when used for a cathode ray tube such as a color Braun tube (CRT), a projection cathode ray tube (PRT), a field emission display (FED) or a vacuum fluorescent display (VFD). (Gd1-a-bEuaRb)2O3 (wherein R is at least one element selected between Pr and Tb; 0.0005≤a≤0.15; and 0
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