Particle size dependence of the dynamic photophysical properties of NaYF4:Yb, Er nanocrystals

Shuang Fang Lim; William S. Ryu; Robert H. Austin

doi:10.1364/OE.18.002309

Particle size dependence of the dynamic photophysical properties of NaYF₄:Yb, Er nanocrystals

Shuang Fang Lim, William S. Ryu, Robert H. Austin

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

60 Scopus citations

Abstract

The effects of the nanocrystal size on the emission spectra and decay rates of upconverting hexagonal NaYF₄:Yb,Er nanocrystals are investigated. The influence of nanocrystal size is represented in terms of the surface area/volume ratio (SA/Vol). Our results show that a small nanocrystal size, or large SA/Vol ratio increases the decay rate, in particular, the green luminescence decay rate varies linearly with the SA/Vol ratio.

Original language	English (US)
Pages (from-to)	2309-2316
Number of pages	8
Journal	Optics Express
Volume	18
Issue number	3
DOIs	https://doi.org/10.1364/OE.18.002309
State	Published - Feb 1 2010

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

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abstract = "The effects of the nanocrystal size on the emission spectra and decay rates of upconverting hexagonal NaYF4:Yb,Er nanocrystals are investigated. The influence of nanocrystal size is represented in terms of the surface area/volume ratio (SA/Vol). Our results show that a small nanocrystal size, or large SA/Vol ratio increases the decay rate, in particular, the green luminescence decay rate varies linearly with the SA/Vol ratio.",

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AU - Lim, Shuang Fang

AU - Ryu, William S.

AU - Austin, Robert H.

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Y1 - 2010/2/1

N2 - The effects of the nanocrystal size on the emission spectra and decay rates of upconverting hexagonal NaYF4:Yb,Er nanocrystals are investigated. The influence of nanocrystal size is represented in terms of the surface area/volume ratio (SA/Vol). Our results show that a small nanocrystal size, or large SA/Vol ratio increases the decay rate, in particular, the green luminescence decay rate varies linearly with the SA/Vol ratio.

AB - The effects of the nanocrystal size on the emission spectra and decay rates of upconverting hexagonal NaYF4:Yb,Er nanocrystals are investigated. The influence of nanocrystal size is represented in terms of the surface area/volume ratio (SA/Vol). Our results show that a small nanocrystal size, or large SA/Vol ratio increases the decay rate, in particular, the green luminescence decay rate varies linearly with the SA/Vol ratio.

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Particle size dependence of the dynamic photophysical properties of NaYF₄:Yb, Er nanocrystals

Abstract

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