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Luminescent properties and concentration quenching mechanism of Sr 2 B 2 O 5 :xEu 2+

D HUANG1,2, Q. LIU3,*

Affiliation

  1. State Key Laboratory of Super hard Materials, Jilin University Changchun, 130022, P. R China
  2. Department of Materials Science and Engineering , Jilin Jianzhu University, Changchun, 130022, P. R China
  3. School of Material Science and Engineering , Changchun University of Science and Changchun, 130022, P. R China

Abstract

The Sr 2 B 2 O 5 :Eu 2+ phosphors were synthesized by high-temperature solid state reaction method. The crystal structure of Sr 2 B 2 O 5 : Eu 2+ is monoclinic system with space group of P2 1 /a(14) and the diffraction peaks positions increase slightly with the increase of Eu 2+ d oping concentrations concentrations. The excitation spectrum locates at UV region and consists of a broad band from 200 nm to 264 nm and a little excitation peak at 355 nm. The emission spectrum of the samples is a broad asymmetric band peaking at 469 nm corresponding to the 4f 6 5d 1 to 4f 7 transition of Eu 2+ ion The best concentration of Eu 2+ ions is 5 mol%. The concentration quenching is caused by the dipole dipole interaction and radiation re-absorption of Eu 2+ ions..

Keywords

Sr 2 B 2 O 5 : Eu 2+ Phosphor Luminescence Concentration quench ing.

Citation

D HUANG, Q. LIU, Luminescent properties and concentration quenching mechanism of Sr 2 B 2 O 5 :xEu 2+, Optoelectronics and Advanced Materials - Rapid Communications, 13, 3-4, March-April 2019, pp.224-227 (2019).

Submitted at: June 9, 2018

Accepted at: April 8, 2019