| 简介 |
PROBLEM TO BE SOLVED : To provide a green emission phosphor which can emit a greenish light superior in color purity and color rendering properties, a method of manufacturing the green emission phosphor, and a white light emitting device using the green emission phosphor.
SOLUTION : The green emission phosphor emits a light having a wavelength of 525-575 nm by being irradiated with a light having a wavelength of 460-470 nm, and contains a chloride as a matrix and a rare earth element ion as an activation agent. The green emission phosphor is manufactured by mixing a matrix raw material, for example yttrium trichloride and an activation agent raw material containing a rare earth element, baking them and pulverizing them, furthermore baking them again; and is used for the white light emitting device.
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