| 简介 |
Provided are a fluorescent material, and a light emitting device using the fluorescent material. The fluorescent material has a composition of a rare earth aluminum gallate containing at least one rare earth element Ln selected from the group consisting of Y, Gd, La, Lu, Sc and Sm
at least one Group 13 element selected from Al and Ga
Tb
Ce
and Eu. When a total molar composition ratio of Al and Ga is set to 5, a total molar ratio of Ln, and Tb, Ce and Eu is 3, a molar ratio of Tb is a product of 3 and a parameter a, a molar ratio of Ce is a product of 3 and a parameter b, a molar ratio of Eu is a product of 3 and a parameter c, a molar ratio of Ga is a product of 5 and a parameter d, the parameter a is 0.25 or more and less than 1, the parameter b is 0.008 × 10 -2 or more and 1.5 × 10 -2 or less, the parameter c is 0.012 × 10 -2 or more and 2 × 10 -2 or less, and the parameter d is 0 or more and 0.85 or less. |
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