Author(s)

Hung-Rung Shih¹, Mu-Tsun Tsai², Lay-Gaik Teoh³, Yee-Shin Chang^4*

¹Department of Mechanical and Computer-Aided Engineering, National Formosa University, Yunlin County.
²Department of Materials Science and Engineering, National Formosa University, Yunlin County.
³Department of Mechanical Engineering, National Pingtung University of Science and Technology, Pingtung County.
⁴Department of Electronic Engineering, National Formosa University, Yunlin County.

The Pr³⁺ ion-doped BaY₂ZnO₅ phosphor with the orthorhombic structure was synthesized successfully using a sol-gel method in this study. The SEM images show that the BaY₂ZnO₅:Pr³⁺ phosphor particles are aggregational but have an isotropic distribution for 2 mol% Pr³⁺ ions doped. Under an excitation wavelength of 311 nm, the emission bands that appear in the emission spectra are due to the ³P₀→³H_4,5,6, ¹D₂→³H₄ and ³P₀→³F₂ electron transition of Pr³⁺ ion, and it is the same as that for solid state reaction preparation. Comparing to the solid state reaction preparation, the intensities of the ³P₀→³H₄ transition were increased by about 6.5 times for sol-gel method. The enhancement in emission intensity is because the activators have more homogeneous contribution in host for the sol-gel method preparation. In addition, the color tone did not change very obviously, which located around the green light region for Pr³⁺ ion concentrations increasing. The color stability is better for sol-gel method than that for the solid state reaction preparation.

Phosphor, Rare Earth Oxides, Optical Properties

Shih, H. , Tsai, M. , Teoh, L. and Chang, Y. (2019) Structure and Photoluminescence Properties of Pr³⁺ Ion-Doped BaY₂ZnO₅ Phosphor Prepared Using a Sol-Gel Method?. Journal of Modern Physics, 10, 91-101. doi: 10.4236/jmp.2019.102008.