[16a-2B-1~9] 13.9 Optical properties and light-emitting devices

[16a-2B-1] First-principles calculations for band edge absorption in Eu³⁺ doped La-F-O-S phosphors

〇Ryo Yoshimatsu^1,2, Masahiro Okada¹, Tadashi Ishigaki³, Koutoku Ohmi^1,4, Shinta Watanabe⁵ (1.Tottori Univ., 2.Denka, 3.TiFREC, 4.TEDREC, 5.Nagoya Univ.)

Keywords:phosphor,CTS,first-principles calculation

We have reported on the luminescent properties of YSF:Eu and La₃OF₃S₂:Eu for developing red phosphors with using charge transfer state(CTS). The relation between band edge absorption and calculation results was investigated about La-O-F-S host matrix materials by performing first-principles calculation.