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Optical properties of novel blue-emitting phosphor

HUA YU ZHU1,* , YIN WEN LI2,3, LI ZHANG1, SHOU-LI SUO1, AI-DE SUN1, MAN-GENG LU2

Affiliation

  1. School of Chemistry and Chemical Engineering, Linyi University. Linyi 276000 P R China
  2. Guangzhou Institute of Chemistry, Chinese Academy of Science, Guangzhou 510650, PR China
  3. Graduate School of the Chinese Academy of Science, Beijing 100049, PR China

Abstract

A novel blue-emitting phosphor, 0.15K5B19O31·SrB2O4:Eu2+, was synthesized by solid state reaction in N2/H2 reductive atmosphere, and X-ray powder diffraction (XRD) analysis confirmed containing K5B19O 31 and SrB 2 O 4 . The phosphor can be efficiently excited by UV visible light from 220 to 430 nm, and exhibite d bright blue emission. Photoluminescence of 0.15K 5 B 19 O 31 ·SrB 2 O 4 :Eu 2+2+, SrB 2 O 4 :Eu 2+ and K 5 B 19 O 31 :Eu 2+ were investigated in detail, and the results showed that 0.15K 5 B 19 O 31 ·SrB 2 O 4 :Eu 2+ expanses excitation wavelength range of SrB 2 O 4 :Eu 2+ and emission, and excitation intensity is stronger 200 times than that of SrB 2 O 4 :Eu 2+ but the positions of emission peaks have no shift. We conclude that the experiment is a new method to research high brightness and wide excitation band phosphors..

Keywords

New method Blue emitting phosphor Ultraviolet light emitting diode.

Citation

HUA YU ZHU, YIN WEN LI, LI ZHANG, SHOU-LI SUO, AI-DE SUN, MAN-GENG LU, Optical properties of novel blue-emitting phosphor, Optoelectronics and Advanced Materials - Rapid Communications, 6, 5-6, May-June 2012, pp.555-559 (2012).

Submitted at: April 21, 2012

Accepted at: June 6, 2012