The influence of Yb3+ co-doping on optical properties of Sm3+-doped sodium tellurite glasses
A series of Sm3+-doped sodium tellurite glasses co-doped with Yb3+ were synthesized by melt quenching technique. The amorphous nature of the glasses was confirmed by X-Rays diffraction technique. From UV-Vis-NIR spectroscopy, eight absorption peaks of Sm3+ ions are observed. The broad absorption ban...
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my.utm.629712017-10-03T06:54:51Z http://eprints.utm.my/id/eprint/62971/ The influence of Yb3+ co-doping on optical properties of Sm3+-doped sodium tellurite glasses Nawaz, Fakhra Sahar, Md. Rahim Ghoshal, Sib Krishna Q Science A series of Sm3+-doped sodium tellurite glasses co-doped with Yb3+ were synthesized by melt quenching technique. The amorphous nature of the glasses was confirmed by X-Rays diffraction technique. From UV-Vis-NIR spectroscopy, eight absorption peaks of Sm3+ ions are observed. The broad absorption band in the range of ~870-1100 nm corresponds to the superposition of Sm3+: 6H5/2 6F11/2 and Yb3+: 2F7/2 2F5/2 transitions. The experimental and theoretical oscillator strengths of these bands were calculated by Judd-Ofelt theory. The optical band gap energy (Eopt) values for direct allowed transition and Urbach energy were found to be in the range of 2.73-2.91 eV and 0.21-0.27 eV respectively. Four luminescence emission bands 4G5/26H5/2, 6H7/2, 6H9/2 and 6H11/2 were revealed under 406 nm excitation and intensity of all bands is found to be quenched with addition of Yb3+ ions. The role of Yb3+ co-doping in the optical properties is compared and understood. Trans Tech Publication 2014 Article PeerReviewed Nawaz, Fakhra and Sahar, Md. Rahim and Ghoshal, Sib Krishna (2014) The influence of Yb3+ co-doping on optical properties of Sm3+-doped sodium tellurite glasses. Advanced Materials Research, 895 . pp. 359-362. ISSN 1022-6680 http://dx.doi.org/10.4028/www.scientific.net/AMR.895.359 DOI:10.4028/www.scientific.net/AMR.895.359 |
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Q Science Nawaz, Fakhra Sahar, Md. Rahim Ghoshal, Sib Krishna The influence of Yb3+ co-doping on optical properties of Sm3+-doped sodium tellurite glasses |
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A series of Sm3+-doped sodium tellurite glasses co-doped with Yb3+ were synthesized by melt quenching technique. The amorphous nature of the glasses was confirmed by X-Rays diffraction technique. From UV-Vis-NIR spectroscopy, eight absorption peaks of Sm3+ ions are observed. The broad absorption band in the range of ~870-1100 nm corresponds to the superposition of Sm3+: 6H5/2 6F11/2 and Yb3+: 2F7/2 2F5/2 transitions. The experimental and theoretical oscillator strengths of these bands were calculated by Judd-Ofelt theory. The optical band gap energy (Eopt) values for direct allowed transition and Urbach energy were found to be in the range of 2.73-2.91 eV and 0.21-0.27 eV respectively. Four luminescence emission bands 4G5/26H5/2, 6H7/2, 6H9/2 and 6H11/2 were revealed under 406 nm excitation and intensity of all bands is found to be quenched with addition of Yb3+ ions. The role of Yb3+ co-doping in the optical properties is compared and understood. |
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Article |
author |
Nawaz, Fakhra Sahar, Md. Rahim Ghoshal, Sib Krishna |
author_facet |
Nawaz, Fakhra Sahar, Md. Rahim Ghoshal, Sib Krishna |
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Nawaz, Fakhra |
title |
The influence of Yb3+ co-doping on optical properties of Sm3+-doped sodium tellurite glasses |
title_short |
The influence of Yb3+ co-doping on optical properties of Sm3+-doped sodium tellurite glasses |
title_full |
The influence of Yb3+ co-doping on optical properties of Sm3+-doped sodium tellurite glasses |
title_fullStr |
The influence of Yb3+ co-doping on optical properties of Sm3+-doped sodium tellurite glasses |
title_full_unstemmed |
The influence of Yb3+ co-doping on optical properties of Sm3+-doped sodium tellurite glasses |
title_sort |
influence of yb3+ co-doping on optical properties of sm3+-doped sodium tellurite glasses |
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Trans Tech Publication |
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2014 |
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http://eprints.utm.my/id/eprint/62971/ http://dx.doi.org/10.4028/www.scientific.net/AMR.895.359 |
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