期刊
RADIATION PHYSICS AND CHEMISTRY
卷 199, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.radphyschem.2022.110284
关键词
Borate; Dysprosium; Luminescence; Scintillation
资金
- Thailand Science Research and Innovation (TSRI) [50163, 50167]
- Center of Excellence in Glass Technology and Materials Science (CEGM) -Nakhon Pathom Rajabhat University
- Muban Chombueng Rajabhat University, Center of Excellence in Glass Technology and Materials Science (CEGM) -Nakhon Pathom Rajabhat University
- National Research Council of Thailand (NRCT)
Dy3+ doped glasses were prepared and their physical, chemical groups, optical, photoluminescence, and radioluminescence properties were investigated. Increasing Dy2O3 concentration led to higher density and refractive index in the glasses. Dy3+ doped glasses absorbed photons in the UV, VIS, and NIR regions. The luminescence lifetime of Dy3+ shortened with increasing Dy2O3 content.
In this work, Dy3+:B2O3-Ga2O3-Al2O3-Gd2O3-Y2O3 glasses system were prepared by melt quenching technique. The physical, chemical groups, optical, photoluminescence and radioluminescence properties of glasses were investigated. The density and refractive index tended to increase with increasing Dy2O3 concentration. The Dy3+ doped glasses absorbed photon in UV, VIS and NIR region in the absorption spectra. For photoluminescence study, the 276 and 351 nm wavelength owned the strong excitation peak, so they were used to measure the emission spectra. The main emission peak of Dy3+ showed at 487 and 575 nm with 4F9/2 -> 6H15/2,13/2 transition due to both direct excitation and the Gd-Dy energy transfer. The luminescence lifetime of Dy3+ was in the milliseconds order that shortened with adding Dy2O3 content. The PL emission intensity at 100 K was around 1.48 times compared to its value at room temperature (~300 K). The Judd-Ofelt theory was used to analyse the radiative properties of glass and its result performed the quantum efficiency around 63.75%. The X-rays induced optical luminescence represented the highest intensity in 0.50 mol% Dy2O3-doped glass similarly to the photoluminescence under 351 nm excitation. The X-rays scintillation efficiency of this glass is 14% compared with BGO crystal. The developed glass in this work owns the potential for X-rays detection material with integration mode usage, and is also interesting for white light source and laser medium applications.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据