Photoluminescence properties and effects of dopant concentration in Bi2ZnB2O7:Tb3+ phosphor


ERDOĞMUŞ E., Korkmaz E.

OPTIK, vol.125, no.15, pp.4098-4101, 2014 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 125 Issue: 15
  • Publication Date: 2014
  • Doi Number: 10.1016/j.ijleo.2014.03.001
  • Title of Journal : OPTIK
  • Page Numbers: pp.4098-4101
  • Keywords: Phosphors, Photoluminescence, Oxyborate, Bi2ZnB2O7:Tb3+, CRYSTAL-STRUCTURE, LUMINESCENCE, IONS, TB3+, EU3+

Abstract

A novel green phosphor, Tb3+ doped Bi2ZnB2O7 was synthesized by conventional solid state reaction method. The phase of synthesized materials was determined using the XRD, DTA/TG and FTIR. The photoluminescence characteristics were investigated using spectrofluorometer at room temperature. Bi2ZnB2O7:Tb3+ phosphors excited by 270 nm and 485 nm wavelengths. The emission spectra were composed of three bands, in which the dominated emission of green luminescence Bi2ZnB2O7:Tb3+ attributed to the transition D-5(4) -> F-7(5) is centered at 546 nm. The dependence of the emission intensity on the Bi2ZnB2O7:Tb3+ concentration for the Bi2-xTbxZnB2O7 (0.01 <= x <= 0.15) was studied and observed that the optimum concentration of Tb3+ in phosphor was 13 mol% for the highest emission intensity at 546 nm. (C) 2014 Elsevier GmbH. All rights reserved.