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Optical and X-ray induced luminescence of Sm3+ -doped borotellurite and fluoroborotellurite glasses: A comparative study
Yuliantini L.a, Djamal M.a,b, Hidayat R.a, Boonin K.c, Yasaka P.c, Kaewnuam E.d, Venkatramu V.e,f, Kaewkhao J.c
a Department of Physics, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Bandung, 40132, Indonesia
b Physics Study Program, Department of Science, Institut Teknologi Sumatera, Lampung, 35365, Indonesia
c Center of Excellence in Glass Technology and Materials Science (CEGM), Nakhon Pathom Rajabhat University, Nakhon Pathom, 73000, Thailand
d Physics Program, Faculty of Science and Technology, Muban Chombueng Rajabhat University, Ratchaburi, 70150, Thailand
e Department of Physics, Yogi Vemana University, Kadapa, 516 005, India
f Department of Physics, Krishna University, Dr. MRAR PG Centre, Nuzvid, 521 201, India
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2019 Elsevier B.V.Borotellurite and fluoroborotellurite glasses doped with Sm3+ ions were synthesized and studied their physical, photoluminescence, x-ray induced luminescence, and fluorescence decays. The glasses that were prepared by melt quenching technique were labelled by BTZOS for 30B2O3 + 29TeO2 + 30BaO + 10ZnO + 1Sm2O3 and BTZFS for 30B2O3 + 29TeO2 + 30BaO + 10ZnF2 + 1Sm2O3. The glass becomes more transparent when ZnO was replaced by ZnF2. It was found that the replacement of ZnO by ZnF2 increases absorbance and luminescence of Sm3+ ions. The Judd – Ofelt intensity parameters were evaluated from measured absorption spectra for BTZOS and BTZFS glasses and their trend is found to be Ω2 > Ω4 > Ω6. The sharp and intense emission peak was originated from 4G5/2 → 6H7/2 transition centred at 600 nm under 403 nm excitation. The colour coordinates of BTZOS and BTZFS glasses are found to fall in the orange region with CCT <4000 K, suitable for solid-state lighting. BTZFS glass exhibits better radiative properties such as long lifetime, higher quantum efficiency (η), radiative transition probability (AR), stimulated emission cross-sections (σe), branching ratios (β), gain bandwidth and figure of merit, lower non-radiative decay rate (WCR)and saturation intensity (Is)than BTZOS glass. From the analysis of the results, it is concluded that BTZFS glass could be more suitable for a gain medium for lasers in the visible region.[/vc_column_text][vc_empty_space][vc_separator css=".vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}"][vc_empty_space][megatron_heading title="Author keywords" size="size-sm" text_align="text-left"][vc_column_text]Borotellurite,Judd-Ofelt intensity parameters,Melt quenching techniques,Oxyfluorides,Radiative properties,Radiative transition probabilities,Solid state lighting,Stimulated emission cross section[/vc_column_text][vc_empty_space][vc_separator css=".vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}"][vc_empty_space][megatron_heading title="Indexed keywords" size="size-sm" text_align="text-left"][vc_column_text]Borotellurite,Laser,Luminescence,Oxyfluoride,Sm3+ ion[/vc_column_text][vc_empty_space][vc_separator css=".vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}"][vc_empty_space][megatron_heading title="Funding details" size="size-sm" text_align="text-left"][vc_column_text]This work was supported by the Ministry of Research, Technology and Higher Education of the Republic of Indonesia (grant numbers 297/I1.B04/SPK-WRRIM/III/2018 ) and WCU-ITB (grant numbers 846/SK/I1.B02/2018 ). The authors are highly grateful to Nakhon Pathom Rajabhat University (NPRU) and National Research Council of Thailand for supporting this research (project number GB_62_12 and GB_62_14 ).[/vc_column_text][vc_empty_space][vc_separator css=".vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}"][vc_empty_space][megatron_heading title="DOI" size="size-sm" text_align="text-left"][vc_column_text]https://doi.org/10.1016/j.jlumin.2019.04.016[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]