Skip to main content

Study on Upconversion Luminescence and Luminescent Dynamics of 20%Yb3+, 0.5%Tm3+ Co-Doped YF3 and GdF3 Nanocrystals

Buy Article:

$105.00 plus tax (Refund Policy)

20%Yb3+, 0.5%Tm3+ co-doped YF3 and GdF3 were synthesized through a facile hydrothermal method. After annealing under an argon atmosphere, the sizes and morphologies of the two samples were characterized by field emission scanning electron microscopy, and the phase and crystallization were analyzed by X-ray diffraction. With a 980 nm continuous wave laser diode as the excitation source, blue and ultraviolet upconversion emissions in the wavelength range of 260–510 nm of Tm3+ and Gd3+/Tm3+ ions were recorded. Under the same excitation conditions, the upconversion emission spectra of the two nanocrystals were compared and analyzed. Gd3+ in the ground state cannot absorb 980 nm photons directly because of the large energy gap between the ground state 8S7/2 and the first excited state 6P7/2. In the 20%Yb3+, 0.5%Tm3+ co-doped GdF3 nanocrystals, the excited states 6IJ of Gd3+ can be populated through the energy transfer 3P23H6 (Tm3+): 8S7/26IJ (Gd3+), meaning that Yb3+ acted as primary sensitizers and Tm3+ acted as secondary sensitizers, transferred energies to host material Gd3+ and resulted in the ultraviolet upconversion emission of the host ions. In this article, the upconversion luminescent dynamics were studied at the onset of a 980 nm pulsed laser from an optical parametric oscillator pumped by a 10 ns pulsed Nd:YAG laser, too.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics


Document Type: Research Article

Publication date: 2010-03-01

More about this publication?
  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more