| 摘要 |
A semiconductor light emitting element which is primarily composed of GaN and which emits blue light is provided with a fluorescent layer, and the fluorescent layer includes fluorescent particles formed of a YAG fluorescent substance. By synthesis between yellow light emitted from the fluorescent particles and the blue light, white light is obtained. Fine particles, such as silica, adhere to the peripheries of the fluorescent particles forming the fluorescent layer, and between the particles, air layers are formed. The air layers each function as a heat insulating layer and can suppress an increase in temperature of the fine particles when an environmental temperature is increased. Hence, luminous efficiency of the fluorescent particles is not likely to vary, and the change in luminescent color can be suppressed. |
