[5a-S21-1~7] The history and future of Multinary Compounds and Solar Cells - 30th anniversary symposium of Professional Group of Multinary Compounds and Solar Cells -

[5a-S21-2] Fundamental properties of CuAlS₂ based red phosphors and their thin-film fabrication

〇Koutoku Ohmi¹, Tadashi Ishigaki¹ (1.Tottori Univ.)

Keywords:CuAlS2:Mn, quantum efficiency, XAFS

The fundamental properties of Mn²⁺ activated CuAlS₂ red phosphors are reviewed. Especially, the XAFS analysis of Mn²⁺ centers substituted at different sites and their luminescent properties are discussed. Currently obtained maximum external quantum efficiency is about 64% under the band-to-band excitation at room temperature. The technics of the CuAlS₂:Mn thin-film fabrication will be also introduced.