Title: Luminescence property of Sm³⁺-doped Ca₁₀K(PO₄)₇ red phosphor

Authors: Z. He; J. Lu; H-Y. He

Addresses: College of Materials Science and Engineering, Shaanxi University of Science and Technology, 710021, China ' College of Materials Science and Engineering, Shaanxi University of Science and Technology, 710021, China ' College of Materials Science and Engineering, Shaanxi University of Science and Technology, 710021, China

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 %.

Keywords: samarium; phosphates; luminescence; red phosphor; light emitting materials.

DOI: 10.1504/IJMPT.2012.051343

International Journal of Materials and Product Technology, 2012 Vol.45 No.1/2/3/4, pp.249 - 258

Received: 11 May 2012
Accepted: 22 Oct 2012
Published online: 18 Sep 2014 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article