Influence of Plasmonic Effect on the Upconversion Emission Characteristics of NaYF4 Hexagonal Microrods

Ting Wang, Chun Kit Siu, Huan Yu, Yunfeng Wang, Siqi Li, Wei Lu, Jianhua Hao, Hong Liu, Jing Hua Teng, Dang Yuan Lei, Xuhui Xu, Siu Fung Yu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

10 Citations (Scopus)


The influence of plasmonic effect on the upconversion emission characteristics of Yb3+-Er3+-Tm3+ tridoped β-NaYF4 hexagonal microrods is studied. Upconversion spontaneous emission can be improved by 10 times if the microrod is deposited on an Ag-coated substrate. The enhancement is also dependent on the emission wavelength and the polarization of the excitation source. Furthermore, upconversion lasing is supported by the geometry of the microrods via the formation of whispering gallery modes. The corresponding excitation threshold can also be reduced by 50% through the influence of plasmonic effect, the coupling between the whispering gallery modes and the surface plasmonic resonance modes.

Original languageEnglish
Pages (from-to)8200-8204
Number of pages5
JournalInorganic Chemistry
Issue number14
Publication statusPublished - 16 Jul 2018

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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