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RARE EARTH PHOSPHORUS VANADATE SALT PHOSPHOR AND VACUUM ULTRAVIOLET RAY-EXCITED LIGHT-EMITTING DEVIC

2025-06-21 05:173330下载
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PROBLEM TO BE SOLVED : To provide a rare earth phosphorus vanadate salt phosphor having a high emission luminance and a good color purity, and a vacuum ultraviolet ray-excited light emitting device using the same. SOLUTION : Since the rare earth phosphorus vanadate salt phosphor represented by formula shown below has a high emission luminance and a good color purity, a PDP display can be provided which has a high panel luminance and a broad color reproduction range. By using for a light emitting device (vacuum ultraviolet ray-excited light emitting device) such as a rare gas discharge lamp, the light emitting device excellent in emission characteristics can be provided. (Ln1-aEua)(P1-b-cVbMc)O4dA2O, wherein Ln is at least one element selected from Y, Gd, La and Lu; M is at least one element selected from Ge, Pb, Ga and Bi; A is at least one element selected from Li, Na and K; and 0.005≤a≤0.2, 0.1≤b≤0.5, 0
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