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Synthesis and characterization of CaMoO4:Eu3+ @ TiO2 red phosphors

YONGYAN XU1, XUEMING LI1,2,* , WULIN LI2, WENJING YANG1

Affiliation

  1. College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, China
  2. Key Laboratory of Optoelectronic Technology and Systems (Education Ministry of China), Chongqing University, Chongqing 400044, China

Abstract

CaMoO4:Eu3+@TiO2 red phosphors were synthesized via a sol-gel method. The morphology and structure of the CaMoO4:Eu3+@TiO2 red phosphor have been investigated by transmission electron microscopy (TEM), energy dispersive spectroscopy(EDS), X-ray diffraction(XRD), and Fourier- transform infrared spectroscopy (FT-IR). The result indicated that TiO2 layer with 25 nm was uniformly coated over the phosphors surface. Meanwhile, CaMoO4:Eu3+@TiO2 red phosphors showed obviously thermal stability compared to CaMoO4:Eu3+ phosphors, indicating it is an effective way to improve the useful lifetime of CaMoO4:Eu3+ red phosphors..

Keywords

Sol-gel method, CaMoO4:Eu3+, TiO2 layer, Luminescence, Thermal stability.

Citation

YONGYAN XU, XUEMING LI, WULIN LI, WENJING YANG, Synthesis and characterization of CaMoO4:Eu3+ @ TiO2 red phosphors, Optoelectronics and Advanced Materials - Rapid Communications, 10, 1-2, January-February 2016, pp.78-81 (2016).

Submitted at: June 6, 2013

Accepted at: Feb. 10, 2016