Optical spectroscopy and emission properties of Ho<sup>3 +</sup>-doped gadolinium calcium silicoborate glasses for visible luminescent device applications
© 2017 Elsevier B.V. The Ho 3 + -doped gadolinium calcium silicoborate glasses with the composition of 25Gd 2 O 3 + 10CaO + 10SiO 2 + (55 − x)B 2 O 3 + xHo 2 O 3 , where x = 0.0, 0.5, 1.0, 1.5, 2.0 and 2.5 mol%, were synthesized by well-known melt quenching method. These glasses have been characteri...
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th-cmuir.6653943832-469672018-04-25T07:37:20Z Optical spectroscopy and emission properties of Ho<sup>3 +</sup>-doped gadolinium calcium silicoborate glasses for visible luminescent device applications C. R. Kesavulu H. J. Kim S. W. Lee J. Kaewkhao N. Wantana S. Kothan S. Kaewjaeng Agricultural and Biological Sciences Arts and Humanities © 2017 Elsevier B.V. The Ho 3 + -doped gadolinium calcium silicoborate glasses with the composition of 25Gd 2 O 3 + 10CaO + 10SiO 2 + (55 − x)B 2 O 3 + xHo 2 O 3 , where x = 0.0, 0.5, 1.0, 1.5, 2.0 and 2.5 mol%, were synthesized by well-known melt quenching method. These glasses have been characterized through physical, structural, optical, visible emission and decay curve analysis. From the absorption spectrum, Judd-Ofelt intensity parameters for 1.0 mol% Ho 2 O 3 doped glass have been carried out and were used to examine radiative properties for the important visible emitting levels of Ho 3 + ions. The present Ho 3 + :glasses show strong green emission at 545 nm and red emission at 655 nm under excitation at 452 nm. The radiative decay time and stimulated emission cross-section for the ( 5 S 2 , 5 F 4 ) → 5 I 8 transition are found to be 280 μs and 0.63 × 10 − 20 cm 2 , respectively. Decay curves for all the concentration of Ho 3 + ions exhibit non-exponential nature for ( 5 S 2 , 5 F 4 ) → 5 I 8 transition. The decrease in decay times is due to the resonant energy transfer among the excited Ho 3 + ions. Hence, these results confirm that the present silicoborate glass system could be considered as a promising candidate for visible green laser applications. 2018-04-25T07:06:19Z 2018-04-25T07:06:19Z 2017-10-15 Journal 00223093 2-s2.0-85028365278 10.1016/j.jnoncrysol.2017.08.018 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85028365278&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/46967 |
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Agricultural and Biological Sciences Arts and Humanities C. R. Kesavulu H. J. Kim S. W. Lee J. Kaewkhao N. Wantana S. Kothan S. Kaewjaeng Optical spectroscopy and emission properties of Ho<sup>3 +</sup>-doped gadolinium calcium silicoborate glasses for visible luminescent device applications |
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© 2017 Elsevier B.V. The Ho 3 + -doped gadolinium calcium silicoborate glasses with the composition of 25Gd 2 O 3 + 10CaO + 10SiO 2 + (55 − x)B 2 O 3 + xHo 2 O 3 , where x = 0.0, 0.5, 1.0, 1.5, 2.0 and 2.5 mol%, were synthesized by well-known melt quenching method. These glasses have been characterized through physical, structural, optical, visible emission and decay curve analysis. From the absorption spectrum, Judd-Ofelt intensity parameters for 1.0 mol% Ho 2 O 3 doped glass have been carried out and were used to examine radiative properties for the important visible emitting levels of Ho 3 + ions. The present Ho 3 + :glasses show strong green emission at 545 nm and red emission at 655 nm under excitation at 452 nm. The radiative decay time and stimulated emission cross-section for the ( 5 S 2 , 5 F 4 ) → 5 I 8 transition are found to be 280 μs and 0.63 × 10 − 20 cm 2 , respectively. Decay curves for all the concentration of Ho 3 + ions exhibit non-exponential nature for ( 5 S 2 , 5 F 4 ) → 5 I 8 transition. The decrease in decay times is due to the resonant energy transfer among the excited Ho 3 + ions. Hence, these results confirm that the present silicoborate glass system could be considered as a promising candidate for visible green laser applications. |
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Journal |
author |
C. R. Kesavulu H. J. Kim S. W. Lee J. Kaewkhao N. Wantana S. Kothan S. Kaewjaeng |
author_facet |
C. R. Kesavulu H. J. Kim S. W. Lee J. Kaewkhao N. Wantana S. Kothan S. Kaewjaeng |
author_sort |
C. R. Kesavulu |
title |
Optical spectroscopy and emission properties of Ho<sup>3 +</sup>-doped gadolinium calcium silicoborate glasses for visible luminescent device applications |
title_short |
Optical spectroscopy and emission properties of Ho<sup>3 +</sup>-doped gadolinium calcium silicoborate glasses for visible luminescent device applications |
title_full |
Optical spectroscopy and emission properties of Ho<sup>3 +</sup>-doped gadolinium calcium silicoborate glasses for visible luminescent device applications |
title_fullStr |
Optical spectroscopy and emission properties of Ho<sup>3 +</sup>-doped gadolinium calcium silicoborate glasses for visible luminescent device applications |
title_full_unstemmed |
Optical spectroscopy and emission properties of Ho<sup>3 +</sup>-doped gadolinium calcium silicoborate glasses for visible luminescent device applications |
title_sort |
optical spectroscopy and emission properties of ho<sup>3 +</sup>-doped gadolinium calcium silicoborate glasses for visible luminescent device applications |
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2018 |
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https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85028365278&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/46967 |
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