Journal
JOURNAL OF RARE EARTHS
Volume 27, Issue 3, Pages 406-410Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S1002-0721(08)60261-6
Keywords
Y2O3:Er3+; film; sol-gel; upconversion; rare earths
Categories
Funding
- Nature Science Foundation of Zhejiang Province [Y406309]
- Science and Technology Bureau of Jinhua City [2008-1-151]
Ask authors/readers for more resources
Y2O3:Er3+ films were prepared by a simple sol-gel process. The structural properties Of Y2O3:Er3+ films were characterized with X-ray diffraction, Fourier transform infrared spectroscopy and field emission scanning electron microscopy. The results indicated that the Y2O3:Er3+ films might have high upconversion efficiency because of their low vibrational energy. Under 785 and 980 nm laser excitation, the samples showed green (H-2(1/2)-->I-4(15/2), S-4(3/2)-->I-4(15/2)) and red (F-2(9/2)-->I-4(15/2)) upconversion emissions. The upconversion mechanisms were studied in detail through laser power dependence. Excited state absorption and energy transfer process were discussed as possible upconversion mechanisms. The cross relaxation process in Er3+ was also investigated.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available