| abstract |
Novel yellow luminescent phosphor consisting of calcium (Ca), aluminum (Al), silicon (Si), europium (Eu) and nitrogen (N) and represented by the general formula: Ca 1 - x AlSi 4 N 7 : Eu x Is disclosed. In this general formula, x is preferably within the range of 0.001 <x ≦ 15. Since this yellow light emitting phosphor emits yellow light, which is a complementary color of blue, when excited by blue light, this phosphor can be used in combination with a blue light emitting device to produce warm white light. |