کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
78395 | 49330 | 2012 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Optimizing Er/Yb ratio and content in Er–Yb co-doped glass-ceramics for enhancement of the up- and down-conversion luminescence Optimizing Er/Yb ratio and content in Er–Yb co-doped glass-ceramics for enhancement of the up- and down-conversion luminescence](/preview/png/78395.png)
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.
► Preparation of Er–Yb co-doped transparent glass-ceramics with varying Er/Yb ratio.
► Optimizing the Er/Yb co-doping for up- and down-conversion layers on solar cells.
► Mechanism for the enhanced up- and down-conversion luminescence of Er and Yb.
Journal: Solar Energy Materials and Solar Cells - Volume 100, May 2012, Pages 209–215