1Department of Chemistry, Berhampur University, Berhampur, Odisha, India, Pin 760007
2Department of Chemistry, Manipur University, Canchipur, Manipur, India, Pin-795003
3Department of Chemistry, D.M. College of Sciences, Imphal, Manipur, Pin-795001
4Department of Chemistry, North Orissa University, Baripada, Odisha, India, Pin-757003
Li+ co-activated Ba5(PO4)3Cl: Eu3+ generally called halo-apatite were prepared by solution method using ethylene glycol at low temperature (150°C). Different Ba compounds such as BaHPO4 and Ba5(PO4)3Cl were observed in this preparation process when the pH of the synthesis medium changed from pH 6 to 11.5. The prepared samples showed the five main emission peaks at 483, 592, 615, 652 and 698 nm; and with increasing pH value from 6 to 11.5 the emission intensity increases. The material can show the white, blue and yellowish-green emission colors when the sample was excited at different excitation wavelengths from 233 to 393 nm.
Halo-apatite, white emission, luminescence, nanoparticles
