Luminescence property of Sm³⁺-doped Ca₁₀K(PO₄)₇ red phosphor
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 Ca_10-2xK_1+xSm_x (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 %.

Online publication date: Thu, 18-Sep-2014

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