Infrared-to-Ultraviolet upconversion luminescence of La0.95Yb0.49Tm0.01F3 nanostructures

Gejihu De, Weiping Qin, Weihua Wang, Bao Gui

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

In this work, we used the hydrothermal method to synthesize Yb3+ and Tm3+ doped LaF3 nanostructures, which is an ultraviolet upconversion luminescent material. Two distinct shapes such as nanosheets, nanoparticles and bulk samples formed in the products by adjusting the concentrations of the surfactant of the reaction solution. Powder X-ray diffraction analysis showed that the products were pure hexagonal phase, while electron microscopy measurements confirm the formation of different morphologies. These nanostructures exhibit strong ultraviolet upconversion luminescence under the excitation of a 978-nm diode laser. In Yb3+ and Tm3+ codoped LaF3 materials, the relative intensity of ultraviolet and blue upconversion emissions became stronger as the size and morphology of sample changed from bulk to sheets. Crown

Original languageEnglish
Pages (from-to)2950-2953
Number of pages4
JournalOptics Communications
Volume282
Issue number14
DOIs
StatePublished - 15 Jul 2009
Externally publishedYes

Keywords

  • Hydrothermal synthesis
  • LaF:Yb,Tm nanostructures
  • Ultraviolet upconversion luminescence

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