Enhanced upconversion fluorescence of Er3+:ZrO2 nanocrystals induced by phase transformation
L. Liu, Y. J. Chen, X. L. Zhang and 3 more
AIP Advances · 2012
doi:10.1063/1.3676601 (opens in a new tab)
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Abstract
In this letter, we demonstrate for the first time a growth of monoclinic phase ZrO2 nanocrytals based on a sol-gel method, compared to the ordinary sol-gel procedure, our method decreases the synthesized temperature from ∼1000 °C to ∼800 °C. In addition, it is found that Er3+ in monoclinic phase ZrO2 nanocrystals have greatly enhanced upconversion emissions under infrared LD excitation due to its lower environmental symmetry.
Abstract licence: CC BY
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