Doping Level Effect on the Luminescence Efficiency of Tb3+/Tb4+-Doped BaWO4 Phosphors Prepared by a Sol-Gel Process

Title:Doping Level Effect on the Luminescence Efficiency of Tb3+/Tb4+-Doped BaWO4 Phosphors Prepared by a Sol-Gel Process

Volume: 8 Issue: 2

Author(s): H.-Y. He*

Affiliation:

• College of Material Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021,China

Keywords: Nanocrystalline materials, functional, cation doping, Luminescence.

Abstract: Background: Rare earth ions in many matrices can emit various luminescences under ultraviolet and/or infrared excitation and so have widely studied for many luminescence applications such as in fluorescent lamps, cathode ray tubes, X-ray intensifying screens, etc. Terbium (Tb) ion is commonly one of the trivalent rare earth ions and widely used for green phosphors material.

Method: The Tb-doped BaWO4 phosphor powders with Tb content of 0–7.5 at.% were fabricated with a sol-gel method. X-ray diffraction analysis, scanning electron microscopy, and photoluminescence spectra analysis were used to characterize the microstructural and photoluminescence efficiency.

Conclusion: The effect of Tb doping level was studied. Granular particle morphology and decreased nano-scale average particles size with increasing Tb-doping level were observed. The Tb3+/Tb4+ in the BaWO4 matrix showed green emission with cool color temperature of 12764 K. A maximal doping level of Tb3+/Tb4+ cation was observed for a highest emission efficiency of Tb3+/Tb4+ cation.

Cite this article as:

He H.-Y.*, Doping Level Effect on the Luminescence Efficiency of Tb3+/Tb4+-Doped BaWO4 Phosphors Prepared by a Sol-Gel Process, Micro and Nanosystems 2016; 8 (2) . https://dx.doi.org/10.2174/1876402909666170126122221

DOI https://dx.doi.org/10.2174/1876402909666170126122221	Print ISSN 1876-4029
Publisher Name Bentham Science Publisher	Online ISSN 1876-4037