Method for manufacturing wavelength conversion member
AssigneeNichia Corporation
InventorsTadayoshi Yanagihara, Naoto Fujioka, Keisuke Suzuki
Life of this patent
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Abstract
A method for manufacturing a wavelength conversion member that offers a high emission intensity and a high light conversion efficiency is provided. The method for manufacturing a wavelength conversion member includes providing a green body containing an yttrium-aluminum-garnet phosphor with a composition represented by Formula (I) below and alumina particles with an alumina purity of 99.0% by mass or more, primary-sintering the green body to obtain a first sintered body, and secondary-sintering the first sintered body by applying a hot isostatic pressing (HIP) treatment to obtain a second sintered body. (Y1-a-bGdaCeb)3Al5O12 (I) wherein a and b satisfy 0≤a≤0.3 and 0≤b≤0.022.
Claims19
A method for manufacturing a wavelength conversion member, the method comprising:
- providing by applying a cold isostatic pressing (CIP) treatment a green body comprising:
- a yttrium-aluminum-garnet phosphor having a composition represented by Formula (I) below;
- alumina particles;
- and
- a powder containing at least Y2O3;
- primary-sintering the green body in an air atmosphere at a temperature in a range of 1200° C. or more and 1800° C. or less to obtain a first sintered body;
- and
- secondary-sintering the first sintered body by applying a hot isostatic pressing (HIP) treatment to obtain a second sintered body,
- (Y1-a-bGdaCeb)3Al5O12 (I)
- wherein a and b satisfy 0.01 ≤a≤0.3 and 0.0001≤b≤0.022.
Dependencies are inferred from the claim text.