Tb3+ ion luminescence enhancement in yttria host lattice obtained via microwave hydrothermal process

Jarosław Kaszewski ,  Sergiy A. Yatsunenko ,  Ewelina A. Wolska ,  Bartłomiej S. Witkowski ,  Łukasz Wachnicki ,  Marek Godlewski 

Institute of Physics, Polish Academy of Sciences, Warsaw 02-668, Poland


Yttrium oxide is very attractive optical material considering its properties: low optical loss, low phonon energies, high refractive index and wide band gap. And since the non-radiative relaxation from excited states is not efficient in Y2O3, the material is suitable as host lattice for optically active lanthanide ions. Yttrium oxide can be easily doped with the ions such as Tb3+, Pr3+ and Eu3+ having characteristic emission lines in visible region.

In our study, the growth of Y2O3:Tb was conducted via microwave driven hydrothermal process. It was found that as prepared material did not contain pure cubic yttrium oxide phase, the hydroxides, oxohydroxides and nitrate complexes were also present. The annealing cycles were performed to show material crystallization evolution. The crystallites were found to be strongly agglomerated into needle-like aggregations. The characteristic trivalent terbium emission lines from 5D4 and 5D3 sublevels to 7FJ were observed in all the samples. The Tb3+ ion shows spectrally narrow green emission bands in Y2O3, excited at relatively low energy, due to 4f8→4f75d intra-ionic transition. After annealing an increase of intensity of the luminescence emission was observed. Interestingly, the mechanism of the trivalent terbium excitation has changed after calcination. The as grown samples exhibit the series of 4f intra-shell excitation lines with the maximum at 413 nm. On the other hand, the annealed samples have shown the host lattice - lanthanide ion coupling resulting in the appearance of the broad charge transfer bands at 306 and 337 nm. Such activation of the Tb3+ ions is related to the growth of the yttria crystallites and changes in dopant coordination.

Legal notice
  • Legal notice:

    Copyright (c) Pielaszek Research, all rights reserved.
    The above materials, including auxiliary resources, are subject to Publisher's copyright and the Author(s) intellectual rights. Without limiting Author(s) rights under respective Copyright Transfer Agreement, no part of the above documents may be reproduced without the express written permission of Pielaszek Research, the Publisher. Express permission from the Author(s) is required to use the above materials for academic purposes, such as lectures or scientific presentations.
    In every case, proper references including Author(s) name(s) and URL of this webpage: http://science24.com/paper/31235 must be provided.


Related papers
  1. Nanoparticles for medical imaging 
  2. The effect of annealing on properties of Europium doped ZnO nanopowders obtained by a microwave hydrothermal method
  3. Microwave conductivity of ZnO:Co and ZnO:Cu thin films with nano-size metallic Co/Cu inclusions.
  4. Quantum semiconductor nanostructures for applications in biology and medicine -development and commercialisation of new generation devices for molecular diagnostics on the basis of new Polish semiconductor devices
  5. Hydrothermal growth of ZnO nanorods for solar cells applications
  6. Epitaxial growth and characterization of zinc oxide nanorods obtained by the hydro-thermal method
  7. Growth of zinc oxide and dielectric films using Atomic Layer Deposition method from organic precursors
  8. Rezonansowe badania fotoemisyjne ferromagnetycznych warstw ZnCoO
  9. Resonant photoemission study of Sm atoms on ZnO surface
  10. Mangan w warstwach ZnMnO hodowanych metodą osadzania warstw atomowych
  11. Lokalne otoczenie atomów kobaltu w cienkich warstwach ZnCoO
  12. Nanofotonika dla małych i średnich przedsiębiorstw - mapy dorogowe i analizy SWOT  najważniejszych technologii.
  13. ZrO2:Tb nanopowders obtained by coprecipitation method
  14. Contactless electroreflectance of ZnSe layers grown by atomic layer epitaxy
  15. ZnFe2O4/ZnO core-shell particles obtained by coprecipitation route
  16. Electrical and optical properties of zinc oxide layers obtained by Atomic Layer Deposition
  17. Zinc oxide grown by Atomic Layer Deposition - a material for novel 3D electronics
  18. Dimethylzinc and diethylzinc as precursors for monocrystalline zinc oxide grown by Atomic Layer Deposition
  19. Thin films of ZnS and ZnSe by Atomic Layer Deposition for light sensor applications
  20. Photovoltaic cells based on nickel phthalocyanine and zinc oxide formed by atomic layer deposition
  21. Effects related to deposition temperature of ZnCoO films grown by Atomic Layer Deposition – uniformity of Co distribution, structural, electric and magnetic properties
  22. Comparison of Au/ZrO2 materials prepared by precipitation and impregnation methods
  23. Effect of annealing on the structure and microstructure of Pr doped ZrO2-Y2O3 nanocrystals
  24. Synthesis of doped ZnO nanopowders in microwave hydrothermal reactors
  25. Synthesis of Al doped ZnO nanopowders and their enhanced luminescence
  26. How we can stimulate intra-shell emissions of rare earth and transition metal ions in thin films and in nanoparticles
  27. ZnO thin films for organic/inorganic heterojunctions
  28. Combining microwave and pressure techniques for hydrothermal synthesis of ZnO and ZrO2 nanopowders doped with a range of metal ions
  29. Luminescence properties of zinc oxide nanopowders doped with Al ions obtained by the hydrothermal and vapour condensation methods.
  30. Wide band-gap II-VI semiconductors for optoelectronic applications
  31. Low temperature ZnMnO by ALD
  32. ZnMnO Films grown by Atomic Layer Deposition with uniform Mn distribution
  33. Effect of annealing on electrical properties of low temperature ZnO films
  34. Doping of ZnO nanopowders with Mn, Ni and Cr In an ultrasound and microwave driver hydrothermal reaction
  35. Time-resolved ODMR investigations of II-VI based DMS heterostructures
  36. Method of Manganese co-doping of LT ZnO films
  37. Photoluminescence of ZnO films studied by femptosecond sapphire:Ti laser
  38. Two color spectroscopy of ZnSe:Cr
  39. Photo-EPR studies of charge tunneling processes in CdxZn(1-x)Se:Fe,Cr (0 ≤ x ≤ 0.3) crystals
  40. Luminescence of CdMnTe Crystals in Magnetic Field
  41. Luminescence of doped nanoparticles of wide band gap II-VI compounds
  42. Doping of ZnO nanopowders with Mn and Cr in an ultrasound and microwave driven hydrothermal reaction
  43. Growth and characterization of thin films of ZnO by Atomic Layer Epitaxy
  44. Dynamics of spin interactions in II-Mn-VI semiconductors studied with time-resolved optically detected magnetic resonance
  45. Influence of n-type doping on light emission properties of GaN layers and GaN-based quantum well structures
  46. Fe photoionization transition in ZnSSe:Fe crystals - photo-ESR studies
  47. In-depth and in-plane profiling of InGaN-based laser diodes and heterostructures
  48. Cathodoluminescence study of n-type doped GaN epilayers and GaN/InGaN quantum well structures
  49. Compensation mechanisms in magnesium doped GaN
  50. Optical and magnetic resonance investigations of ZnO crystals doped with transition metal ions
  51. Optical and ODMR study of GaN-based HEMT structures
  52. Photo-ESR and optical studies of Cr photoionization transition in CdZnSe:Cr crystals
  53. Luminescent properties of wide bandgap materials at room temperature

Presentation: Oral at Nano PL 2014, Symposium A, by Jarosław Kaszewski
See On-line Journal of Nano PL 2014

Submitted: 2014-07-02 05:40
Revised:   2014-07-03 08:06
Web science24.com
© 1998-2022 pielaszek research, all rights reserved Powered by the Conference Engine