Optical characterization, absorption and upconversion luminescence in Er3+and Er3+/Yb3+doped In2O3 phosphor

Optical characterization, absorption and upconversion luminescence in Er3+and Er3+/Yb3+doped... Combustion derived In2O3:Er3+, co-doped with Yb3+phosphor powders have been prepared. Powder X-ray diffraction, scanning electron microscopy, energy dispersive X-ray and Fourier transform infrared spectroscopy methods are used to characterize the prepared phosphor powders. The intensity parameters (Ωλ, λ=2, 4 and 6), radiative transition probabilities (AR), radiative lifetime (τR) and branching ratios (β) of certain emission transition of Er3+ions for In2O3:Er3+and In2O3:Er3+/Yb3+phosphors have been estimated in the framework of the model given by Judd–Ofelt. Upon excitation at 978nm, upconversion luminescence properties of Er3+and Er3+/Yb3+doped In2O3 phosphors are investigated. The results obtained from optical study confirm the existence of an effective Yb3+to Er3+energy transfer process and it also predict possible mechanisms to populate the 4S3/2 and 4F9/2 levels. The possible upconversion mechanisms are discussed for Er3+and Yb3+ions with energy level diagram. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Luminescence Elsevier

Optical characterization, absorption and upconversion luminescence in Er3+and Er3+/Yb3+doped In2O3 phosphor

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Publisher
Elsevier
Copyright
Copyright © 2016 Elsevier B.V.
ISSN
0022-2313
eISSN
1872-7883
D.O.I.
10.1016/j.jlumin.2016.04.006
Publisher site
See Article on Publisher Site

Abstract

Combustion derived In2O3:Er3+, co-doped with Yb3+phosphor powders have been prepared. Powder X-ray diffraction, scanning electron microscopy, energy dispersive X-ray and Fourier transform infrared spectroscopy methods are used to characterize the prepared phosphor powders. The intensity parameters (Ωλ, λ=2, 4 and 6), radiative transition probabilities (AR), radiative lifetime (τR) and branching ratios (β) of certain emission transition of Er3+ions for In2O3:Er3+and In2O3:Er3+/Yb3+phosphors have been estimated in the framework of the model given by Judd–Ofelt. Upon excitation at 978nm, upconversion luminescence properties of Er3+and Er3+/Yb3+doped In2O3 phosphors are investigated. The results obtained from optical study confirm the existence of an effective Yb3+to Er3+energy transfer process and it also predict possible mechanisms to populate the 4S3/2 and 4F9/2 levels. The possible upconversion mechanisms are discussed for Er3+and Yb3+ions with energy level diagram.

Journal

Journal of LuminescenceElsevier

Published: Aug 1, 2016

References

  • Spectrochim. Acta A
    Singh, Vijay; Rathaiah, M.; Venkatramu, V.; Haase, Markus; Kim, S.H.
  • J. Lumin.
    Singh, V.; Rai, Vineet Kumar; Al-Shamery, Katharina; Nordmann, J.örg; Haase, Markus
  • J. Lumin.
    Singh, V.; Chakradhar, R.P.S.; Rao, J.L.; Kwak, Ho-Young
  • Spectrochim. Acta A
    Singh, V.; Haritha, P.; Venkatramu, V.; Kim, S.H.
  • Spectrochim. Acta A
    Singh, V.; Rai, V.K.; Al-Shamery, K.; Haase, M.; Kim, S.H.
  • J. Lumin.
    Cao, B.S.; He, Y.Y.; Zhang, L.; Dong, B.
  • Appl. Phys. Lett.
    Reddy, B.R.; Venkateswarlu, P.

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