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PROBLEM TO BE SOLVED : To solve the problem that conventional luminescent materials are not bright enough and colors on a color display screen becomes dull, when the green luminescent material emits light containing green or red. SOLUTION : The vacuum ultra violet-excited green luminescent material consists of terbium and gadolinium-activated rare earth aluminum-scandium borate expressed by general formula : (Y1-x-yGdxTby)Al3-zScz(BO3)4 (0≤x<0.5, 0
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