金岛溅射膜的上转换发射具有高度光谱依赖性增强。
Highly spectral dependent enhancement of upconversion emission with sputtered gold island films.
机构信息
Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, USA.
出版信息
Chem Commun (Camb). 2011 Jan 21;47(3):979-81. doi: 10.1039/c0cc03566a. Epub 2010 Nov 16.
Abstract
We report a five-fold overall enhancement of upconversion emission in NaYF(4) : Yb/Er nanocrystals when coupled with gold island films. Spectroscopic studies show that the enhancement factors are highly dependent on the exact spectral positions and excitation power density, with a largest enhancement factor of more than 12 observed at selected spectral positions, which may be attributed to different upconversion processes involved.
摘要
我们报告了在与金岛膜耦合时，NaYF(4)：Yb/Er 纳米晶体上的上转换发射增强了五倍。光谱研究表明，增强因子高度依赖于精确的光谱位置和激发功率密度，在选定的光谱位置观察到最大增强因子超过 12，这可能归因于涉及的不同上转换过程。
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