کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1524849 | 1511833 | 2011 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: High efficient near-infrared quantum cutting in Ce3+,Yb3+ co-doped LuBO3 phosphors High efficient near-infrared quantum cutting in Ce3+,Yb3+ co-doped LuBO3 phosphors](/preview/png/1524849.png)
High efficient near-infrared (NIR) quantum cutting (QC) LuBO3:Ce3+,Yb3+ phosphors had been synthesized by hydrothermal method with further heat treatment. Due to the cooperative energy transfer (CET) from one Ce3+ to two Yb3+ ions, an intense NIR emission around 971 nm of Yb3+: 2F5/2 → 2F7/2 transition was obtained under 369 nm excitation. Yb3+ concentration dependent quantum efficiency has been calculated and the maximum efficiency approaches up to 181% before reaching the critical concentration quenching threshold. Because the 971 nm emission of Yb3+ is matched with the band gap of crystalline Si, the phosphors may be applied potentially in silicon-based solar cells.
► High efficient NIR QC LuBO3:Ce3+,Yb3+ phosphors had been synthesized.
► The cooperative energy transfer from one Ce3+ to two Yb3+ ions had been proved.
► LuBO3:Ce3+,Yb3+ may be used to improve the efficiency of silicon solar cells.
Journal: Materials Chemistry and Physics - Volume 128, Issues 1–2, 15 July 2011, Pages 191–194