Dr Mark Hughes M.A.Hughes@salford.ac.uk
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Energy transfer in Cr and Nd co-doped Si-B-Na-Al-Ca-Zr-O glasses
Hughes, MA; Li, H; Curry, RJ; Suzuki, T; Ohishi, Y
Authors
H Li
RJ Curry
T Suzuki
Y Ohishi
Abstract
Cr and Nd co-doped glasses are potential gain media for solar pumped lasers (SPLs). Tanabe-Sugano analysis
shows that Cr doped Si-B-Na-Al-Ca-Zr-O (SBNACZ) glass contains a mixture of Cr3+ with octahedral coordination and Cr6+with unknown coordination. The crystal field parameters for Cr3+ were Dq = 1574 cm−1
,
B = 792.2 cm−1
, C = 3005 cm−1 and Dq/B = 1.99, indicating a low covalency of Cr-O bonds. We compared the
quantum efficiency (QE) of Nd and Cr co-doped SBNACZ glass with Nd doped SBNACZ glass to determine the
Cr3+→Nd3+ transfer QE. The Cr2O3 content was fixed at 0.1 mol.% and the Nd2O3 content was varied between
0.1 and 1 mol.%. A maximum transfer QE of 20% was obtained at 0.5 mol.% Nd2O3. Cr3+→Nd3+ energy transfer
is dominated by the coulombic interaction mechanism. The clustering of Nd3+ was a limiting factor for increasing the transfer QE with higher Nd3+ concentrations.
Citation
Hughes, M., Li, H., Curry, R., Suzuki, T., & Ohishi, Y. (2020). Energy transfer in Cr and Nd co-doped Si-B-Na-Al-Ca-Zr-O glasses. Journal of Non-Crystalline Solids, 530, https://doi.org/10.1016/j.jnoncrysol.2019.119769
Journal Article Type | Article |
---|---|
Acceptance Date | Nov 6, 2019 |
Online Publication Date | Dec 20, 2019 |
Publication Date | Feb 15, 2020 |
Deposit Date | Jan 6, 2020 |
Publicly Available Date | Dec 20, 2020 |
Journal | Journal of Non-Crystalline Solids |
Print ISSN | 0022-3093 |
Publisher | Elsevier |
Volume | 530 |
DOI | https://doi.org/10.1016/j.jnoncrysol.2019.119769 |
Publisher URL | https://doi.org/10.1016/j.jnoncrysol.2019.119769 |
Related Public URLs | https://www.sciencedirect.com/journal/journal-of-non-crystalline-solids |
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Spectroscopic characterisation JNCS revised no markup.pdf
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Licence
http://creativecommons.org/licenses/by-nc-nd/4.0/
Publisher Licence URL
http://creativecommons.org/licenses/by-nc-nd/4.0/
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