Changchun Institute of Optics,Fine Mechanics and Physics,CAS
Upconversion luminescence dynamics in Er3+/Yb3+ codoped nanocrystalline yttria | |
其他题名 | 论文其他题名 |
Song H. W.; Xia H. P.; Sun B. J.; Lu S. Z.; Liu Z. X.; Yu L. X. | |
2006 | |
发表期刊 | Chinese Physics Letters |
ISSN | 0256-307X |
卷号 | 23期号:2页码:474-477 |
摘要 | The upconversion luminescence and dynamics in Er3+/Yb3+ codoped nanocrystalline yttria (7-65 nm) are studied under 980-nm pulsed laser excitation. It is found that the red emission of F-4(9/2)-I-4(15/2) and the green emission of H-2(11/2)/S-4(3/2) in nanoparticles with lower concentration of Yb3+ result from a two-photon excitation. In nanocrystals with higher Yb3+ concentration, the red emissions from a two-photon excitation, while the green emissions from a three-photon excitation. The luminescence dynamics indicates that as the particle size decreases, both the rise and the decay time constants become shorter. As the size decreases to several nanometres, the rise process nearly disappears, suggesting that the upconversion luminescence originates mainly from self-excitation of Er3+, instead of the energy transfer of Yb3+ -> Er3+. |
收录类别 | SCI |
语种 | 英语 |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ciomp.ac.cn/handle/181722/24931 |
专题 | 中科院长春光机所知识产出 |
推荐引用方式 GB/T 7714 | Song H. W.,Xia H. P.,Sun B. J.,et al. Upconversion luminescence dynamics in Er3+/Yb3+ codoped nanocrystalline yttria[J]. Chinese Physics Letters,2006,23(2):474-477. |
APA | Song H. W.,Xia H. P.,Sun B. J.,Lu S. Z.,Liu Z. X.,&Yu L. X..(2006).Upconversion luminescence dynamics in Er3+/Yb3+ codoped nanocrystalline yttria.Chinese Physics Letters,23(2),474-477. |
MLA | Song H. W.,et al."Upconversion luminescence dynamics in Er3+/Yb3+ codoped nanocrystalline yttria".Chinese Physics Letters 23.2(2006):474-477. |
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