Duan Research Group

Hetero-integrated Nanostructures and Nanodevices


Highly spectral dependent enhancement of upconversion emission with sputtered gold island films

H. Zhang, D. Xu, Y. Huang, and X. Duan

Chem. Comm. 47, 979-981 (2011)

We report a five-fold overall enhancement of upconversion emission in NaYF4: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.
UCLA, Department of Chemistry and Biochemistry
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E-mail: xduan@chem.ucla.edu