Effect of Gadolinium Oxide and Gadolinium Fluoride in Borophosphate Glasses Doped with Tb₂O₃ Content

Abstract

The melt-quenching process synthesized gadolinium oxide and fluoride in borophosphate glasses doped with terbium ions (Tb³⁺). The effect of fluoride compounds and their impacts on physical, optical, and luminescent properties have been investigated. The glasses absorbed near-infrared, visible light, and ultraviolet photons. The bright green emission circa 542 nm via the ⁵D₄ → ⁷F₅ radiative state of Tb³⁺ originated. Depending on the excitation, there are several sorts of ultraviolet, visible light, and X-ray. The values of decay time are in the order of milliseconds (ms). The Gd³⁺-Tb³⁺ energy transfer is vital in green emission under 275 nm excitation. According to the results obtained in this work, the developed glasses can be suitable candidates for green emission medium.

Keywords:

• Borophosphate glass
• Tb³⁺
• energy transfer
• rare earth

Acknowledgments

J. Kaewkhao would like to thank the National Research Council of Thailand (NRCT) and Thailand Science Research and Innovation (TSRI) for supporting this research. The authors would like to thank all graduate students and co-researchers in the research laboratory of the Center of Excellence in Glass Technology and Materials Science, and there is also the Industrial Materials Science Division Faculty of Science and Technology Rajamangala University of Technology Phra Nakhon.

Disclosure Statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by Thailand Research Fund (TRF) through the Royal Golden Jubilee (RGJ) Ph.D. Program (Grant No. N41A650114).