Pump-power tunable white upconversion emission in lanthanide-doped hexagonal NaYF4 nanorods
Pump-power tunable white upconversion emission in lanthanide-doped hexagonal NaYF4 nanorods
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稀土掺杂六方 NaYF4 纳米棒中泵浦功率可调的白光上转换发射
DOI:
10.1016/j.optmat.2011.01.016
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发表时间:
2011-04
期刊:
影响因子:
--
通讯作者:
L. W. Yang
中科院分区:
文献类型:
--
作者:
P. K. Chu;C. Q. Sun;Y. Y. Zhang;J. X. Zhong;J. J. Li;L. W. Yang
Pump-power tunable white upconversion (UC) emission under the excitation of a 980nm laser diode from lanthanide-doped hexagonal NaYF4nanorods synthesized by a hydrothermal method is reported. The calculated color coordinates reveal that the UC white color output from both the Yb3+–Ho3+–Tm3+and Yb3+–Er3+–Tm3+triply-doped systems can be fine-tuned for a wide range of pump-power densities, but each has its own superiority. The former has a broader response scope to pump-power densities for white emission and the simulated white color output can be tuned more precisely, whereas the latter has a much broader range of white color output under the same pump-power densities. These desirable properties make these Ln3+doped hexagonal NaYF4nanostructures promising in applications such as miniaturized solid-state light sources, multicolor three-dimensional display devices, optical processing sensors and multicolor labels for bioprobe and bioimaging.
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