| 简介 |
PROBLEM TO BE SOLVED : To provide a light emitting device that achieves excellent luminous efficacy by suppressing reabsorption between phosphors.
SOLUTION : The light emitting device 10 includes : a light emitting element 14 mounted on a board 12; a red phosphor layer 20 which is formed on the light emitting element, has a semicircular shape with a diameter r, and contains a red phosphor represented by the following formula (1) (M1-x1Eux1)aSibAlOcNd, wherein M is an element selected from IA group elements, IIA group elements, IIIA group elements, IIIB group elements except Al, rare-earth elements, and IVB group elements; and x1, a, b, c, and d is 0
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