Enhanced red upconversion emission of Er3+-doped ZnO by post-annealing

In this paper, we synthesized Er3+-doped Zinc oxide nanocrystals by conventional sol-gel method under 800°C, and further mesoporous-like structure was obtained through post-annealing procedure at 1300°C. Upconversion intensity was significantly enhanced by post-annealing, and the emission color was...

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Bibliographic Details
Published in:Journal of luminescence 2017-12, Vol.192, p.668-674
Main Authors: Xiao, Luying, Wang, Ran, Sun, Zisong, Chen, Yujin, Zhao, Enming, Liu, Lu
Format: Article
Language:English
Subjects:
Enhancement
Post-anneal
Red luminescence
Upconversion
Zinc oxide
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Summary:In this paper, we synthesized Er3+-doped Zinc oxide nanocrystals by conventional sol-gel method under 800°C, and further mesoporous-like structure was obtained through post-annealing procedure at 1300°C. Upconversion intensity was significantly enhanced by post-annealing, and the emission color was turned into relatively high purity red color (ratio of red to green emission is over 10). In addition, the mechanisms of post-annealing and upconversion luminescence were discussed in detail on the basis of the structural and spectral measurements.
ISSN:0022-2313
1872-7883
DOI:10.1016/j.jlumin.2017.08.001