Yttrium-cerium-aluminum garnet phosphor and light-emitting device
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsKazuhiro Wataya, Toshihiko Tsukatani, Hirofumi Kawazoe, Takehisa Minowa
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Abstract
In a yttrium-cerium-aluminum garnet phosphor having a crystallographic texture, nanocrystalline grains having a grain size of 5-20 nm and containing cerium in a higher concentration than the matrix phase are dispersed in the crystallographic texture. The emission color of the phosphor is shifted to the longer wavelength side. The phosphor can maintain its satisfactory emission performance even at high temperature.
Claims6
A yttrium-cerium-aluminum garnet phosphor having a crystallographic texture wherein the crystallographic texture is based on a matrix phase, and nanocrystalline grains having a grain size of 5 to 20 nm and containing cerium in a higher concentration than the cerium concentration of the matrix phase are dispersed in the crystallographic texture.
Dependencies are inferred from the claim text.