Synthesis And Characterization Of Optoelectronics Bromoapatite Ca5(PO4)3Br:RE3+ (RE3+ = Ce3+, Dy3+ and Eu+3 Phosphors

Department of Physics, R.T.M. Nagpur University, Nagpur 440033, India

Adv. Mater. Lett., 2014, 5 (12), pp 706-711

DOI: 10.5185/amlett.2014.amwc444

Publication Date (Web): Dec 02, 2014

Copyright © IAAM-VBRI Press

E-mail: sjdhoble@rediffmail.com

Abstract

 The subject of this work is the characterization of the photoluminescence properties of RE³⁺ doped bromoapatite inorganic optoelectronic phosphor material. This paper reports the luminescence properties of RE³⁺ (Where RE= Ce, Dy, and Eu) doped Ca₅(PO₄)₃Br, which has been prepared by solid state reaction route. The prepared phosphor is well characterized by XRD, SEM, FT-IR and photoluminescence (PL) measurement. The apatite Ca₅(PO₄)₃Br:Ce³⁺ shows an efficient broad  emission at 340 nm and weak 362 nm emission when excited at 293 nm. Ca₅(PO₄)₃Br:Dy³⁺ phosphor shows an efficient blue and yellow  emissions at 485 nm and 577 nm respectively when excited at 390 nm . Ca₅(PO₄)₃Br:Eu³⁺ phosphor shows an orange and weak red emission at 592 nm and 615 nm respectively when excited at 396 nm. The effect of the RE³⁺ concentration on the luminescence properties of Ca₅ (PO₄)₃Br:RE³⁺ phosphors are also studied. The investigated prepared bromoapatite phosphors may be suitable for a near UV excited LED. 

Keywords

Phosphor, apatite, photoluminescence, rare earth