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Title: Synthesis of Er³⁺ doped KNbO₃ nanocrystals and nanoceramics with outstanding up-conversion luminescence behaviors
Authors: Sun, Si-Yuan
Ge, Yi-Yao
Zhao, Yong-Jie
Xie, Yong-Jie
Keywords: Engineering::Materials
Issue Date: 2021
Source: Sun, S., Ge, Y., Zhao, Y. & Xie, Y. (2021). Synthesis of Er³⁺ doped KNbO₃ nanocrystals and nanoceramics with outstanding up-conversion luminescence behaviors. Journal of Alloys and Compounds, 854, 156738-.
Journal: Journal of Alloys and Compounds
Abstract: Rare earth doped perovskite has become one of the most attractive multifunctional materials benefiting from the unique ferro-/piezoelectric, photocatalytic and photoluminescence properties. In this contribution, a series of Er3+ doped KNbO3 nanocrystals with distinctive morphologies, i.e., nanocubes, nanocuboids, and quasi-nanospheres, were prepared via a facile molten salt synthesis method. Furthermore, using the as-synthesized nanocrystals, the Er3+ doped KNbO3 ceramics with homogeneous nanograins were obtained. The growth mechanism of the nanocrystals with different morphologies and sintering process of the nanoceramics were rationally proposed, respectively. It was demonstrated that the morphology of the nanocrystals could be controlled by adjusting the doping amount of Er3+ and the structure of the as-sintered nanoceramics strongly depends on the morphology of the pristine nanocrystals. Impressively, the Er3+-KNbO3 nanocrystals and nanoceramics exhibited excellent up-conversion photoluminescence (UC PL) properties. This work may pave a new way to the structure-controlled synthesis of rare earth doped perovskite oxides and related nanoceramics, which show large potential in applications of novel multifunctional devices.
ISSN: 0925-8388
DOI: 10.1016/j.jallcom.2020.156738
Schools: School of Materials Science and Engineering 
Research Centres: Centre for Programmable Materials 
Rights: © 2020 Elsevier B.V. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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