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Structural, optical, and luminescence properties of ZnO:Ga optical scintillation ceramic

Gorokhova, E. I. ; Eron’Ko, S. B. ; Oreshchenko, E. A. ; Sandulenko, A. V. ; Rodnyi, P. A. ; Chernenko, K. A. LU ; Venevtsev, I. D. ; Kul’Kov, A. M. ; Muktepavela, Faina and Boutachkov, Plamen (2018) In Journal of Optical Technology (A Translation of Opticheskii Zhurnal) 85(11). p.729-737
Abstract

This paper discusses the characteristics of ZnO and ZnO:Ga ceramics fabricated by uniaxial hot pressing. The short-wavelength transmission limit of zinc oxide ceramics is in the 370-nm region; the long-wavelength limit is determined by the free-charge-carrier concentration and lies in the interval from 5 to 9 μm. The total transmittance of such ceramics in the visible and near-IR regions is about 70% when the sample is 0.5 mm thick. The luminescence spectrum is represented by a broad emission band with maximum at 580 nm, having a defect nature. The introduction of 0.03–0.1 mass % gallium into the zinc oxide structure inhibits grain growth and increases the free-charge-carrier concentration to 3.44 × 1019 cm−3. As... (More)

This paper discusses the characteristics of ZnO and ZnO:Ga ceramics fabricated by uniaxial hot pressing. The short-wavelength transmission limit of zinc oxide ceramics is in the 370-nm region; the long-wavelength limit is determined by the free-charge-carrier concentration and lies in the interval from 5 to 9 μm. The total transmittance of such ceramics in the visible and near-IR regions is about 70% when the sample is 0.5 mm thick. The luminescence spectrum is represented by a broad emission band with maximum at 580 nm, having a defect nature. The introduction of 0.03–0.1 mass % gallium into the zinc oxide structure inhibits grain growth and increases the free-charge-carrier concentration to 3.44 × 1019 cm−3. As the gallium concentration increases in the range 0.05–0.1 mass % in a ceramic of composition ZnO:Ga, the defect luminescence band is suppressed and a characteristic exciton luminescence is formed with a maximum corresponding to 389 nm and a damping time constant of 1.1 ns.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Optical Technology (A Translation of Opticheskii Zhurnal)
volume
85
issue
11
pages
9 pages
publisher
The Optical Society
external identifiers
  • scopus:85069433451
ISSN
1070-9762
DOI
10.1364/JOT.85.000729
language
English
LU publication?
yes
id
295c9862-4a92-4051-9e50-42a0ea7b45b5
date added to LUP
2022-04-01 08:26:40
date last changed
2022-04-17 01:22:19
@article{295c9862-4a92-4051-9e50-42a0ea7b45b5,
  abstract     = {{<p>This paper discusses the characteristics of ZnO and ZnO:Ga ceramics fabricated by uniaxial hot pressing. The short-wavelength transmission limit of zinc oxide ceramics is in the 370-nm region; the long-wavelength limit is determined by the free-charge-carrier concentration and lies in the interval from 5 to 9 μm. The total transmittance of such ceramics in the visible and near-IR regions is about 70% when the sample is 0.5 mm thick. The luminescence spectrum is represented by a broad emission band with maximum at 580 nm, having a defect nature. The introduction of 0.03–0.1 mass % gallium into the zinc oxide structure inhibits grain growth and increases the free-charge-carrier concentration to 3.44 × 10<sup>19</sup> cm<sup>−3</sup>. As the gallium concentration increases in the range 0.05–0.1 mass % in a ceramic of composition ZnO:Ga, the defect luminescence band is suppressed and a characteristic exciton luminescence is formed with a maximum corresponding to 389 nm and a damping time constant of 1.1 ns.</p>}},
  author       = {{Gorokhova, E. I. and Eron’Ko, S. B. and Oreshchenko, E. A. and Sandulenko, A. V. and Rodnyi, P. A. and Chernenko, K. A. and Venevtsev, I. D. and Kul’Kov, A. M. and Muktepavela, Faina and Boutachkov, Plamen}},
  issn         = {{1070-9762}},
  language     = {{eng}},
  number       = {{11}},
  pages        = {{729--737}},
  publisher    = {{The Optical Society}},
  series       = {{Journal of Optical Technology (A Translation of Opticheskii Zhurnal)}},
  title        = {{Structural, optical, and luminescence properties of ZnO:Ga optical scintillation ceramic}},
  url          = {{http://dx.doi.org/10.1364/JOT.85.000729}},
  doi          = {{10.1364/JOT.85.000729}},
  volume       = {{85}},
  year         = {{2018}},
}