Synthesis and photoluminescent properties of α-NaYF4:Nd/α-NaYF4 core/shell nanostructure with enhanced near infrared (NIR) emission

Qiang Zhang; Qi Ming Zhang

doi:10.1016/j.matlet.2008.10.064

Synthesis and photoluminescent properties of α-NaYF₄:Nd/α-NaYF₄ core/shell nanostructure with enhanced near infrared (NIR) emission

Qiang Zhang, Qi Ming Zhang

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

21 Scopus citations

Abstract

A simple and efficient method has been established for the synthesis of α-NaYF₄:Nd/α-NaYF₄ core/shell nanoparticles under hydrothermal conditions. The as-prepared products were characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), photoluminescence (PL) spectra and lifetimes. TEM images show that the as-prepared samples have sphere-like shape. The lifetime values of the ⁴F_3/2 energy level of the α-NaYF₄:Nd/α-NaYF₄ core/shell nanoparticles increase significantly in comparison with those of α-NaYF₄:Nd core nanoparticles, with a quantum efficiency of as high as 52%.

Original language	English
Pages (from-to)	376-378
Number of pages	3
Journal	Materials Letters
Volume	63
Issue number	3-4
DOIs	https://doi.org/10.1016/j.matlet.2008.10.064
State	Published - Feb 15 2009
Externally published	Yes

Funding

The authors thank Shanghai Leading Academic Discipline Project (B108) for financial support. Also, we thank Prof. Chunhui Huang and Prof. Fuyou Li for helpful discussions.

Keywords

Core/shell nanostructure
Lifetime analysis
Nanomaterials
Optical materials and properties

Access to Document

10.1016/j.matlet.2008.10.064

Cite this

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title = "Synthesis and photoluminescent properties of α-NaYF4:Nd/α-NaYF4 core/shell nanostructure with enhanced near infrared (NIR) emission",

abstract = "A simple and efficient method has been established for the synthesis of α-NaYF4:Nd/α-NaYF4 core/shell nanoparticles under hydrothermal conditions. The as-prepared products were characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), photoluminescence (PL) spectra and lifetimes. TEM images show that the as-prepared samples have sphere-like shape. The lifetime values of the 4F3/2 energy level of the α-NaYF4:Nd/α-NaYF4 core/shell nanoparticles increase significantly in comparison with those of α-NaYF4:Nd core nanoparticles, with a quantum efficiency of as high as 52%.",

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