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Orange emission enhancement of Sm3+ ion-doped fluoroborotellurite glasses for LED and laser application
L Yuliantini1, E S Rahayu1, M Djamal1, R Hidayat1, K Boonin2,3, P Yasaka2,3, J Kaewkhao2,3

1Department of Physics, Institut Teknologi Bandung, Jl. Ganesa No. 10 40132, Indonesia
2Center of Excellence in Glass Technology and Materials Science (CEGM), Nakhon Pathom Rajabhat University, Nakhon Pathom 73000, Thailand
3Physics Program, Faculty of Science and Technology, Nakhon Pathom Rajabhat University, Nakhon Pathom 73000, Thailand
yuliantini.lia[at]gmail.com


Abstract

We developed Sm3+ ion-doped fluoroborotellurite glass using melt and quenching technique. The glass formula is (30-x)TeO2-30B2O3-10ZnF2-30BaO-xSm2O3 where x = 0.0, 0.05, 0.1, 0.5, 1.0, and 1.5 mol%. The raw material is melted at 1150 0C for 1.5 hours and annealed at 500 0C for 1.5 hours. All glass samples are cut and polished around 1.5 x 1.0 x 0.35 cm3. Several properties such as physical, optical, photoluminescence and radiative are inspected to understand the Sm3+ ion in the glass matrix. The absorption spectra are observed in the infrared region and show strong absorption peaks at 1232 nm due to 6H5/2→6F7/2 transition. Meanwhile, the photoluminecence properties show the glass sample excessively emits 600 nm under λex=403 nm due to 4G5/2→6H7/2 transition. The CIE 1931 coordinate confirms the orange emission colour of the present glass. The radiative properties of glass sample in the 4G5/2→6H7/2 transition are investigated using Judd-Ofelt theory and shows high potential lasing parameters such as large stimulated emission cross section (σe = 2.04 x 10-21 cm2), high branching ratio (βcal = 0.62), and high quantum efficiency (η = 81%). From all results, we conclude that our glass sample can be developed as a light source of orange LED and laser application.

Keywords: Borotellurite glass, LED, and Sm3+

Topic: Optical, luminescence, Electronic Materials and applications

Link: https://ifory.id/abstract/b8g7zpQ9enHr

Conference: The 4th International Conference on Applied Physics and Materials Application (ICAPMA 2019)

Plain Format | Corresponding Author (Lia Yuliantini)

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