[12p-A303-1~15] 13.8 Optical properties and light-emitting devices

[12p-A303-6] Crystal structure and luminescence properties of Sr₂LiAlO₄:Eu²⁺ and Sr₂Li_1-xAl_1+xN_2xO_4-2x:Eu²⁺(x~0.09)

〇Atsushi Ooishi¹, Shiro Funahashi², Takashi Takeda², Naoto Hirosaki² (1.Mitsubishi Chemical Corp., 2.NIMS)

Keywords:phosphor, crystal structure, luminescence property

Several crystalline polymorphs have been reported for A₂B₂X₄(A: Sr, Ba B: Li, Al X: O, N) type oxides and oxynitrides. We obtained Sr₂LiAlO₄:Eu²⁺ with space group Pnma and Sr₂Li_1-xAl_1+xN_2xO_4-2x: Eu²⁺ (x ~ 0.09) with space group P2₁/m by using Single-Particle-Diagnosis approach. The crystal structures and luminescence properties of these phosphors are reported.