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 journalArticlepeer-review

55 Scopus citations


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 languageEnglish (US)
Pages (from-to)2309-2316
Number of pages8
JournalOptics Express
Issue number3
StatePublished - Feb 1 2010

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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