Light-emitting semiconductor device, light-emitting system and method for fabricating light-emitting semiconductor device

摘要

A chip-type light-emitting semiconductor device includes: a substrate 4 ; a blue LED 1 mounted on the substrate 4 ; and a luminescent layer 3 made of a mixture of yellow/yellowish phosphor particles 2 and a base material 13 (translucent resin). The yellow/yellowish phosphor particles 2 is a silicate phosphor which absorbs blue light emitted by the blue LED 1 to emit a fluorescence having a main emission peak in the wavelength range from 550 nm to 600 nm, inclusive, and which contains, as a main component, a compound expressed by the chemical formula: (Sr_1-a1-b1-xBa_a1Ca_b1Eu_x)₂SiO₄ (0<=a1<=0.3, 0<=b1<=0.8 and 0