Spectroscopic Study of Eu³⁺ Doped in Bismuth Barium Borate Glasses for Reddish Orange Emission Photonic Applications

Abstract

In this study, the bismuth-barium-borate glasses doped with Eu³⁺ were prepared by melt-quench technique. For study in physical property, luminescence property and opportunity to apply in laser applications. The results show that doping with Eu^{3 +} at a higher concentration causes an increase in the molar volume of the glass. This cause by expanding of NBOs in glass network. The four peaks of absorption spectra were observed at 526, 585, 2106, and 2222 nm and they show higher intensity when adding more Eu₂O₃ contents. The electron radiative relaxation from ⁵D₀ → ⁷F₀,⁷F₁, ⁷F₂, ⁷F₃ and ⁷F₅ released five emission spectra peaks. Which the 2.5 mol% of Eu³⁺ is the optimum concentration that shows the strongest emission. The reddish-orange emitting from Eu³⁺ doped glasses investigated by CIE 1931 chromaticity. The J-O parameters were investigated by J-O theory, the parameters indicate that Eu³⁺ doped glass has the high potential for using on field of laser medium, LED, and display screen.

Keywords:

• BBBO
• Eu₂O₃
• physical properties
• optical properties
• luminescence

Acknowledgments

The authors would like to thanks Rajamangala University of Technology Rattanakosin (RMUTR) for financial support for this research. Also, we would like to thanks Center of Excellence in Glass Technology and Materials Science (CEGM), Nakhon Pathom Rajabhat University for supporting the technique of glass preparation and instruments.