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

Abstract A series of orange-red emitting Ba 2 Y 3 (SiO 4 ) 3 F: x Sm 3+ (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 Ba 2 Y 3 (SiO 4 ) 3 F:Sm 3+ phosphors consisted of some sharp emission peaks of Sm 3+ ions centered at 564, 601, 648, and 710 nm. The strongest one is located at 601 nm due to 4 G 5/2 – 6 H 7/2 transition of Sm 3+ , generating bright orange-red light. The optimum dopant concentration of Sm 3+ ions in Ba 2 Y 3 (SiO 4 ) 3 F: x Sm 3+ is around 3 mol% and the critical transfer distance of Sm 3+ is calculated as 26 A. The quenching temperature is above 500 K. The CIE chromaticity coordinates of the Ba 2 Y 3 (SiO 4 ) 3 F:0.03Sm 3+ phosphors is located in the orange reddish region. The Ba 2 Y 3 (SiO 4 ) 3 F:Sm 3+ phosphors may be potentially used as red phosphors for white light-emitting diodes.