Investigation of luminescence properties of Ho3+ doped barium, zinc and gadolinium based phosphate glasses
Shoaib M. Khan I. Iskakova K. Alam M.M. Rooh G. Chanthima N. Kothan S. Ullah I. Ahad A. Kaewkhao J.
June 2022Elsevier GmbH
Optik
2022#260
10BaO-10ZnO-10Gd2O3-69P2O3-1Ho2O3 (ZBOH) and 10BaO-10ZnO-10GdF3-69P2O3-1Ho2O3 (ZBFH) were developed by the melt-quenched-method. The synthesized ZBOH and ZBFH glass samples were characterized for Uv-Vis-NIR, excitation, emission, decay time profile measurements and physical properties. It is observed that the ZBOH glass have higher density and refractive index as compared to the ZBFH glass. From the band gap calculation, it is observed that the oxyfluoride glasses have lower band gap as compared to the oxide glasses which indicate more
on bridging oxygen in oxyfluoride glasses. The emission spectra recorded at λex = 449 nm show four emission bands at 5F2 (477 nm), 5F3 (495 nm),5F4 +5S2(545 nm) and5F5 (659 nm) from 5I8-levels. Judd-Ofelt (J-O) theory is used to investigate the J-O intensity parameters, transition probability, stimulated emission cross section and branching ratio. From the results its perceived that the radiative transition probability and branching ratio values are higher for 5F4 →5I8 transition as compared to the other transitions.
Branching ratio , Ho3+ ions , Judd-Ofelt (J-O) theory , Rare earth (RE3+) ions
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Department of Physics, Abdul Wali Khan University, Mardan, 23200, Pakistan
Department of Physics and Mathematics, Kazakh National Pedagogical University, Almaty, Kazakhstan
Department of Basic Medical Sciences, College of Applied Medical Science, King Khalid University, Abha, 61421, Saudi Arabia
Center of Excellence in Glass Technology and Materials Science (CEGM), Nakhon Pathom Rajabhat University, Nakhon Pathom, 73000, Thailand
Physics Program, Faculty of Science and Technology, Nakhon Pathom Rajabhat University, 73000, Thailand
National center for Physics, Islamabad, Pakistan
Center of Radiation Research and Medical Imaging, Department of Radiologic Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, 50200, Thailand
Department of Physics
Department of Physics and Mathematics
Department of Basic Medical Sciences
Center of Excellence in Glass Technology and Materials Science (CEGM)
Physics Program
National center for Physics
Center of Radiation Research and Medical Imaging
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