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Title
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Optimizing Er/Yb ratio and content in Er-Yb co-doped glass-ceramics for enhancement of the up- and down-conversion luminescence
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Author
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Abstract
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| Er3+Yb3+ co-doped transparent glass-ceramics with varying Er/Yb content and ratio have been prepared. High quantum yields for up- and down-conversion luminescence by energy transfer from Yb3+ to Er3+ and from Er3+ to Yb3+, respectively, have been detected and optimized with respect to the Er/Yb content and ratio, and proposed in particular for up- and down-conversion of solar spectrum for enhancement of the efficiency of solar cells. The rise and decay kinetics for the population of the excited levels of Er3+ and Yb3+ have been studied and fit. Based on these experimental data, the mechanisms for the energy transfers have been suggested with emphasis on the optimized Er/Yb content and ratio for enhancement of the efficiency of the Er3+↔Yb3+ energy transfers. |
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Language
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English
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Source (journal)
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Solar energy materials and solar cells. - Amsterdam
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Publication
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Amsterdam
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2012
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ISSN
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0927-0248
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DOI
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10.1016/J.SOLMAT.2012.01.019
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Volume/pages
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100
(2012)
, p. 209-215
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ISI
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000303034700030
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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