Bifunctional NaGdF4:Yb, Er, Fe nanocrystals with the enhanced upconversion fluorescence

Xiaohong Chuai; Xingyuan Guo; Xiaohui Liu; Guanghui He; Kezhi Zheng; Chunfeng He; Weiping Qin

doi:10.1016/j.optmat.2015.02.019

Bifunctional NaGdF₄:Yb, Er, Fe nanocrystals with the enhanced upconversion fluorescence

Xiaohong Chuai, Xingyuan Guo, Xiaohui Liu, Guanghui He, Kezhi Zheng, Chunfeng He, Weiping Qin

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

NaGdF₄:Yb, Er nanocrystals doped with Fe³⁺ were synthesized by a facile hydrothermal method. The upconversion emissions in a broad range from 200 to 700 nm were measured under 980 nm laser excitation. The luminescence intensity can be improved greatly by Fe³⁺ doping. In addition to the typical upconversion emission of Er³⁺ ions, the violet emission from Gd³⁺ is explained by the energy transfer from Er³⁺ to Gd³⁺. Powder X-ray diffraction patterns reveal that Fe³⁺ can enter crystal sites interstitially and substitutionally. The effects of Fe³⁺ doping on morphology, crystal growth and emission properties of particles are discussed in detailed. Furthermore, these nanocrystals exhibit paramagnetic properties and have the potential applications in bimodal bioimaging in virtue of their upconversion luminescent and paramagnetic properties.

Original language	English
Pages (from-to)	13-17
Number of pages	5
Journal	Optical Materials
Volume	44
Issue number	1
DOIs	https://doi.org/10.1016/j.optmat.2015.02.019
State	Published - 2015
Externally published	Yes

Keywords

Fe doping
NaGdF
Upconversion

Access to Document

10.1016/j.optmat.2015.02.019

Cite this

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title = "Bifunctional NaGdF4:Yb, Er, Fe nanocrystals with the enhanced upconversion fluorescence",

abstract = "NaGdF4:Yb, Er nanocrystals doped with Fe3+ were synthesized by a facile hydrothermal method. The upconversion emissions in a broad range from 200 to 700 nm were measured under 980 nm laser excitation. The luminescence intensity can be improved greatly by Fe3+ doping. In addition to the typical upconversion emission of Er3+ ions, the violet emission from Gd3+ is explained by the energy transfer from Er3+ to Gd3+. Powder X-ray diffraction patterns reveal that Fe3+ can enter crystal sites interstitially and substitutionally. The effects of Fe3+ doping on morphology, crystal growth and emission properties of particles are discussed in detailed. Furthermore, these nanocrystals exhibit paramagnetic properties and have the potential applications in bimodal bioimaging in virtue of their upconversion luminescent and paramagnetic properties.",

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author = "Xiaohong Chuai and Xingyuan Guo and Xiaohui Liu and Guanghui He and Kezhi Zheng and Chunfeng He and Weiping Qin",

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T1 - Bifunctional NaGdF4:Yb, Er, Fe nanocrystals with the enhanced upconversion fluorescence

AU - Chuai, Xiaohong

AU - Guo, Xingyuan

AU - Liu, Xiaohui

AU - He, Guanghui

AU - Zheng, Kezhi

AU - He, Chunfeng

AU - Qin, Weiping

PY - 2015

Y1 - 2015

N2 - NaGdF4:Yb, Er nanocrystals doped with Fe3+ were synthesized by a facile hydrothermal method. The upconversion emissions in a broad range from 200 to 700 nm were measured under 980 nm laser excitation. The luminescence intensity can be improved greatly by Fe3+ doping. In addition to the typical upconversion emission of Er3+ ions, the violet emission from Gd3+ is explained by the energy transfer from Er3+ to Gd3+. Powder X-ray diffraction patterns reveal that Fe3+ can enter crystal sites interstitially and substitutionally. The effects of Fe3+ doping on morphology, crystal growth and emission properties of particles are discussed in detailed. Furthermore, these nanocrystals exhibit paramagnetic properties and have the potential applications in bimodal bioimaging in virtue of their upconversion luminescent and paramagnetic properties.

AB - NaGdF4:Yb, Er nanocrystals doped with Fe3+ were synthesized by a facile hydrothermal method. The upconversion emissions in a broad range from 200 to 700 nm were measured under 980 nm laser excitation. The luminescence intensity can be improved greatly by Fe3+ doping. In addition to the typical upconversion emission of Er3+ ions, the violet emission from Gd3+ is explained by the energy transfer from Er3+ to Gd3+. Powder X-ray diffraction patterns reveal that Fe3+ can enter crystal sites interstitially and substitutionally. The effects of Fe3+ doping on morphology, crystal growth and emission properties of particles are discussed in detailed. Furthermore, these nanocrystals exhibit paramagnetic properties and have the potential applications in bimodal bioimaging in virtue of their upconversion luminescent and paramagnetic properties.

KW - Fe doping

KW - NaGdF

KW - Upconversion

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