Role of Li+ ions on the luminescence properties in water dispersible mesoporous CaF2:Eu3+ nanocrystals

Ting Fan; Jiantao Lü; Guoji Li; Yongfa Huang

doi:10.1117/1.OE.56.1.017104

12 January 2017 Role of Li+ ions on the luminescence properties in water dispersible mesoporous CaF2:Eu3+ nanocrystals

Ting Fan, Jiantao Lü, Guoji Li, Yongfa Huang

Author Affiliations +

Optical Engineering, Vol. 56, Issue 1, 017104 (January 2017). https://doi.org/10.1117/1.OE.56.1.017104

Abstract

Polyvinyl pyrrolidone- (PVP) and ethylene glycol- (EG) coated water dispersible mesoporous CaF2:Eu3+,Li+ nanocrystals were synthesized by a simple one-pot hydrothermal method. The role of Li+ ions on the morphology and spectra in the CaF2 nanocrystals have been reported. The synthesized nanocrystals were monodisperse with regular sphere-like shapes and exhibited obvious hollow mesoporous structure. The results from x-ray photoelectron spectroscopy determined the successful incorporation of Eu3+ ions and Li+ ions into the CaF2 host lattice. The excitation and emission intensity of Eu3+ enhanced with Li+ concentration until 7 mol.%. The nanocrystals could disperse in water for more than a month due to the EG and PVP molecules coated over the nanocrystals.

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Ting Fan, Jiantao Lü, Guoji Li, and Yongfa Huang "Role of Li+ ions on the luminescence properties in water dispersible mesoporous CaF2:Eu3+ nanocrystals," Optical Engineering 56(1), 017104 (12 January 2017). https://doi.org/10.1117/1.OE.56.1.017104

Received: 19 August 2016; Accepted: 23 December 2016; Published: 12 January 2017

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