[PH1-3]High-Durability Sulfide Red-Emitting Phosphor
*Seika Tokumitsu1, Yutaka Anzai1, Tsuneo Kusunoki1, Satoshi Makio1(1. OXIDE Corporation (Japan))
Keywords:
Blue light excitation,Red-emitting phosphor,Humidity resistance
To produce a high-durability red-emitting phosphor, Eu doped CaS (CaS:Eu) was crystalized. Single crystals with a <100> orientation were obtained without cracks or impurities. The internal quantum efficiency was improved using annealing treatment, exceeding that of CaS:Eu powder. The single crystals had higher moisture resistance than that of CaS:Eu powder.