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Bistable upconversion emission in Yb-sensitized Tm:ZrO2 nanophosphors at room temperature

  • Li Li*
  • , Bin Zhang
  • , Jiaqi Du
  • , Zhenguo Zhang
  • , Dexing Wang
  • , Xinlu Zhang
  • *Corresponding author for this work
  • Harbin Engineering University
  • Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

We report the strong bistability effect of multiphoton upconversion, observed at room temperature, in Yb3+-sensitized Tm3+:ZrO2 condensed-phase nanophosphors via the efficient upconversion excitation. The sizable bistability of upconversion from a collection of excited Tm3+ ions exhibit good controllability in polarity only by varying the density of Yb3+ sensitizer. The polarity of bistability converts regularly from clockwise into anti-clockwise cycles as the dopant density grows from 2% to 10% Yb3+. The results suggest a practicable way to control bistable emission of solids at room temperature.

Original languageEnglish
Article number1650009
JournalJournal of Nonlinear Optical Physics and Materials
Volume25
Issue number1
DOIs
StatePublished - 1 Mar 2016
Externally publishedYes

Keywords

  • Upconversion
  • intrinsic bistability
  • nanophosphor

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