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SINTERED PHOSPHOR, LIGHT-EMITTING DEVICE, ILLUMINATION DEVICE, IMAGE DISPLAY DEVICE AND INDICATOR

2025-06-18 22:484330下载
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PROBLEM TO BE SOLVED : To provide a sintered phosphor for an LED, having high internal quantum efficiency and transmittance, particularly, a sintered phosphor that can give light emission at a low color temperature, and a light-emitting device, an illumination device, and an indicator lamp for a vehicle, which emit light at a low color temperature with high emission efficiency, high luminance and a large amount of a red color component and prevents changes in brightness or color shift due to changes in the intensity of excitation light and temperature. SOLUTION : The sintered phosphor comprises a nitride phosphor and a fluoride inorganic binder. The nitride phosphor comprises a crystal phase represented by formula [1] LawAxSi6 NyMz, where M element represents at least one element selected from activating elements; A element represents at least one element selected from rare earth elements excluding La and activating elements; and w, x, y and z satisfy 2.0≤w≤4.0, 0
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