Issue 4, 2019

Preparation, growth mechanism, size manipulation and near-infrared luminescence enhancement of β-NaYF4:Nd3+ microcrystals via Ca2+ doping

Abstract

β-NaYF4:Nd3+ microcrystals have been prepared successfully by a facile hydrothermal route and characterized through structure analysis, photoluminescence spectroscopy and decay time. Their growth mechanism was profoundly discussed on the basis of different reaction time-dependent morphologies and phase evolution. More importantly, the near-infrared luminescence intensity at 1.06 μm was enhanced by about 3 times via doping Ca2+ into the NaYF4:Nd3+ microcrystal lattice. Meanwhile, the morphology and size of as-synthesized microcrystals were also manipulated by the Ca2+ doping strategy. The potent mechanism involving improvement of crystallinity along with the modification of the crystal field due to the introduction of Ca2+ ions was proposed to understand the enhanced near-infrared emission intensity of the β-NaYF4:Nd3+ microcrystals. The Ca2+-doped β-NaYF4:Nd3+ crystals with high performance have potential application in optical communication, laser application and biological deep-tissue imaging.

Graphical abstract: Preparation, growth mechanism, size manipulation and near-infrared luminescence enhancement of β-NaYF4:Nd3+ microcrystals via Ca2+ doping

Supplementary files

Article information

Article type
Paper
Submitted
09 Nov 2018
Accepted
14 Dec 2018
First published
17 Dec 2018

CrystEngComm, 2019,21, 741-748

Preparation, growth mechanism, size manipulation and near-infrared luminescence enhancement of β-NaYF4:Nd3+ microcrystals via Ca2+ doping

Q. Shao, H. Zhang, J. Dai, C. Yang, X. Chen, G. Feng and S. Zhou, CrystEngComm, 2019, 21, 741 DOI: 10.1039/C8CE01924J

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