| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1593280 | Solid State Communications | 2010 | 4 Pages |
Abstract
The influence of Eu3+ on the upconversion (UC) fluorescence of Er3+ in Y 2O3:Er3+, Y b3+ nanocrystals was investigated. Room-temperature UC spectra show that the intensity ratio of red to green lights was increased from 8.6 to 19.3 with 1.0 mol% Eu3+ doping. Additionally, with the increase of Eu3+ ion concentration, the nn values for both green and red UC emissions in Y 2O3:Er3+, Y b3+ nanocrystals become larger. Our analysis shows that the energy transfer between Eu3+ and Er3+ ions is the main cause for the enhancement of 2H11/2, 4S3/2→4F9/2 and 4I11/2→4I13/2 transitions of Er3+ ions.
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Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Y.Q. Sheng, J. Liu, L.L. Xu, D. Zhai, Z.G. Zhang, W.W. Cao,