Luminescence property of Sm3+-doped Ca10K(PO4)7 red phosphor Online publication date: Thu, 18-Sep-2014
by Z. He; J. Lu; H-Y. He
International Journal of Materials and Product Technology (IJMPT), Vol. 45, No. 1/2/3/4, 2012
Abstract: A series of Ca10-2xK1+xSmx (PO4)7 (x = 0-0.06) powders have been fabricated with solid state reaction methods and their luminescence property is studied for the first time. X-ray diffractometry analysis indicates that the synthesised powders are all single phase Ca10K(PO4)7 with rhombohedral structure and the doped Sm3+ ions have not caused any significant change in the host structure, indicating Sm3+ ions are incorporated into the Ca10K(PO4)7 structure. Scanning electron microscopy micrograph indicates that powders have uniform granular morphology with an average particle size about 250-500 nm that decreases with increasing Sm3+ concentration. The synthesised powders show red emissions at 563.8 nm, 604.0nm, and 649.2 nm that reaches maximal intensity at Sm3+ concentration of 3 at %.
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