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A platform for research: civil engineering, architecture and urbanism
PHOSPHOR PLATE
To provide a phosphor plate that has a large amount of luminous flux, has suppressed decrease in luminous efficiency due to temperature rise, and emits a white light with a small chromaticity difference.SOLUTION: Provided is a phosphor plate, which is a phosphor plate that is made of a calcined body of (Y1-x-y, Gdx, Cey)3Al5O12 particles and Al2O3 particles, characterized in that 0.07≤x≤0.11 and 0.010≤y≤0.015, and in the calcined body, the average particle size of (Y1-x-y, Gdx, Cey)3Al5O12 particles is 4 μm or more and 6 μm or less, the concentration of (Y1-x-y, Gdx, Cey)3Al5O12 particles is 20 vol% or more and 30 vol% or less for the total amount of 100 vol% of (Y1-x-y, Gdx, Cey)3Al5O12 particles and Al2O3 particles, the ratio of the average particle size of the Al2O3 particles and the average particle size of the (Y1-x-y, Gdx, Cey)3Al5O12 particles, (Al2O3/(Y1-x-y, Gdx, Cey)3Al5O12) is 1 or more and 2 or less, and the total thickness of the calcined body is 150 μm or more and 250 μm or less.SELECTED DRAWING: None
【課題】光束量が多く、温度上昇による発光効率の低下が抑えられ、かつ、色度差の小さい白色光を発光する蛍光体プレートを提供する。【解決手段】（Ｙ1-x-y，Ｇｄx，Ｃｅy）3Ａｌ5Ｏ12粒子およびＡｌ2Ｏ3粒子による焼成体からなる蛍光体プレートであって、０．０７≦ｘ≦０．１１および０．０１０≦ｙ≦０．０１５であり、前記焼成体中、（Ｙ1-x-y，Ｇｄx，Ｃｅy）3Ａｌ5Ｏ12粒子の平均粒径が４μｍ以上６μｍ以下であり、（Ｙ1-x-y，Ｇｄx，Ｃｅy）3Ａｌ5Ｏ12粒子およびＡｌ2Ｏ3粒子の合計量１００ｖｏｌ％に対して、（Ｙ1-x-y，Ｇｄx，Ｃｅy）3Ａｌ5Ｏ12粒子の濃度が２０ｖｏｌ％以上３０ｖｏｌ％以下であり、前記Ａｌ2Ｏ3粒子の平均粒径と前記（Ｙ1-x-y，Ｇｄx，Ｃｅy）3Ａｌ5Ｏ12粒子の平均粒径との比率（Ａｌ2Ｏ3／（Ｙ1-x-y，Ｇｄx，Ｃｅy）3Ａｌ5Ｏ12）が１以上２以下であり、前記焼成体の全体厚さが１５０μｍ以上２５０μｍ以下であることを特徴とする蛍光体プレート。【選択図】なし
PHOSPHOR PLATE
To provide a phosphor plate that has a large amount of luminous flux, has suppressed decrease in luminous efficiency due to temperature rise, and emits a white light with a small chromaticity difference.SOLUTION: Provided is a phosphor plate, which is a phosphor plate that is made of a calcined body of (Y1-x-y, Gdx, Cey)3Al5O12 particles and Al2O3 particles, characterized in that 0.07≤x≤0.11 and 0.010≤y≤0.015, and in the calcined body, the average particle size of (Y1-x-y, Gdx, Cey)3Al5O12 particles is 4 μm or more and 6 μm or less, the concentration of (Y1-x-y, Gdx, Cey)3Al5O12 particles is 20 vol% or more and 30 vol% or less for the total amount of 100 vol% of (Y1-x-y, Gdx, Cey)3Al5O12 particles and Al2O3 particles, the ratio of the average particle size of the Al2O3 particles and the average particle size of the (Y1-x-y, Gdx, Cey)3Al5O12 particles, (Al2O3/(Y1-x-y, Gdx, Cey)3Al5O12) is 1 or more and 2 or less, and the total thickness of the calcined body is 150 μm or more and 250 μm or less.SELECTED DRAWING: None
【課題】光束量が多く、温度上昇による発光効率の低下が抑えられ、かつ、色度差の小さい白色光を発光する蛍光体プレートを提供する。【解決手段】（Ｙ1-x-y，Ｇｄx，Ｃｅy）3Ａｌ5Ｏ12粒子およびＡｌ2Ｏ3粒子による焼成体からなる蛍光体プレートであって、０．０７≦ｘ≦０．１１および０．０１０≦ｙ≦０．０１５であり、前記焼成体中、（Ｙ1-x-y，Ｇｄx，Ｃｅy）3Ａｌ5Ｏ12粒子の平均粒径が４μｍ以上６μｍ以下であり、（Ｙ1-x-y，Ｇｄx，Ｃｅy）3Ａｌ5Ｏ12粒子およびＡｌ2Ｏ3粒子の合計量１００ｖｏｌ％に対して、（Ｙ1-x-y，Ｇｄx，Ｃｅy）3Ａｌ5Ｏ12粒子の濃度が２０ｖｏｌ％以上３０ｖｏｌ％以下であり、前記Ａｌ2Ｏ3粒子の平均粒径と前記（Ｙ1-x-y，Ｇｄx，Ｃｅy）3Ａｌ5Ｏ12粒子の平均粒径との比率（Ａｌ2Ｏ3／（Ｙ1-x-y，Ｇｄx，Ｃｅy）3Ａｌ5Ｏ12）が１以上２以下であり、前記焼成体の全体厚さが１５０μｍ以上２５０μｍ以下であることを特徴とする蛍光体プレート。【選択図】なし
PHOSPHOR PLATE
蛍光体プレート
IRIE MASAKI (author) / SUZUKI YUMA (author)
2022-07-08
Patent
Electronic Resource
Japanese
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