Mechanism studies on the superior optical limiting observed in graphene oxide covalently functionalized with upconversion NaYF4:Yb 3+/Er3+ nanoparticles

Tingchao He, Wei Wei, Lin Ma, Rui Chen, Shixin Wu, Hua Zhang, Yanhui Yang, Jan Ma, Ling Huang, Gagik G. Gurzadyan, Handong Sun

Research output: Contribution to journalArticlepeer-review

60 Scopus citations

Abstract

Superior optical limiting (OL) characteristics and mechanisms are explored in a novel nanocomposite made from graphene oxide (GO) and NaYF 4:Yb3+/Er3+ nanoparticles via covalent chemical bonding. Due to the synergistic effect of enhanced nonlinear scattering, two-photon absorption, and efficient energy transfer between NaYF 4:Yb3+/Er3+ nanoparticles and GO, the nanocomposite displays dramatically improved OL effects compared to either GO or NaYF4:Yb3+/Er3+ nanoparticles, making it a very promising material for practical OL devices.

Original languageEnglish
Pages (from-to)2163-2168
Number of pages6
JournalSmall
Volume8
Issue number14
DOIs
StatePublished - 23 Jul 2012
Externally publishedYes

Keywords

  • graphene oxide
  • lanthanides
  • nanocomposites
  • nonlinear optics

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