Duan Research Group

Hetero-integrated Nanostructures and Nanodevices

Publications

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
607 Charles E. Young Drive East, Box 951569
Los Angeles, CA 90095-1569
E-mail: xduan@chem.ucla.edu