Photoluminescence characteristics of high thermal stable fluorosilicate apatite Ba2Y3(SiO4)3F:Sm3+ orange-red emitting phosphor

Abstract

A series of orange-red emitting Ba2Y3(SiO4)3F:xSm3+ (0.003≤x≤0.08) fluorosilicate apatite phosphors was synthesized by the convenient solid-state reaction. X-ray diffraction and photoluminescence spectra were utilized to characterize the structure and luminescence properties of the as-synthesized phosphors. The emission spectra of the Ba2Y3(SiO4)3F:Sm3+ phosphors consisted of some sharp emission peaks of Sm3+ ions centered at 564, 601, 648, and 710nm. The strongest one is located at 601nm due to 4G5/2–6H7/2 transition of Sm3+, generating bright orange-red light. The optimum dopant concentration of Sm3+ ions in Ba2Y3(SiO4)3F:xSm3+ is around 3mol% and the critical transfer distance of Sm3+ is calculated as 26Å. The quenching temperature is above 500K. The CIE chromaticity coordinates of the Ba2Y3(SiO4)3F:0.03Sm3+ phosphors is located in the orange reddish region. The Ba2Y3(SiO4)3F:Sm3+ phosphors may be potentially used as red phosphors for white light-emitting diodes.