NDLI: Nano-Crystallization of Ln-Fluoride Crystals in Glass-Ceramics via Inducing of $Yb^{3+}$ for Efficient Near-Infrared Upconversion Luminescence of $Tm^{3+}$

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Nano-Crystallization of Ln-Fluoride Crystals in Glass-Ceramics via Inducing of $Yb^{3+}$ for Efficient Near-Infrared Upconversion Luminescence of $Tm^{3+}$

Content Provider	MDPI
Author	Li, Jianfeng Long, Yi Zhao, Qichao Zheng, Shupei Fang, Zaijin Guan, Bai-Ou
Copyright Year	2021
Description	Transparent glass-ceramic composites embedded with Ln-fluoride nanocrystals are prepared in this work to enhance the upconversion luminescence of Tm3+. The crystalline phases, microstructures, and photoluminescence properties of samples are carefully investigated. KYb3F10 nanocrystals are proved to controllably precipitate in the glass-ceramics via the inducing of Yb3+ when the doping concentration varies from 0.5 to 1.5 mol%. Pure near-infrared upconversion emissions are observed and the emission intensities are enhanced in the glass-ceramics as compared to in the precursor glass due to the incorporation of Tm3+ into the KYb3F10 crystal structures via substitutions for Yb3+. Furthermore, KYb2F7 crystals are also nano-crystallized in the glass-ceramics when the Yb3+ concentration exceeds 2.0 mol%. The upconversion emission intensity of Tm3+ is further enhanced by seven times as Tm3+ enters the lattice sites of pure KYb2F7 nanocrystals. The designed glass ceramics provide efficient gain materials for optical applications in the biological transmission window. Moreover, the controllable nano-crystallization strategy induced by Yb3+ opens a new way for engineering a wide range of functional nanomaterials with effective incorporation of Ln3+ ions into fluoride crystal structures.
Starting Page	1033
e-ISSN	20794991
DOI	10.3390/nano11041033
Journal	Nanomaterials
Issue Number	4
Volume Number	11
Language	English
Publisher	MDPI
Publisher Date	2021-04-18
Access Restriction	Open
Subject Keyword	Nanomaterials Ceramics Nano-crystallized Glass Ceramic Nano-crystallization Luminescence Tm3+ Doped Upconversion
Content Type	Text
Resource Type	Article

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