Optical, luminescence, and scintillation properties of ZnO and ZnO:Ga ceramics

Details Optical, luminescence, and scintillation properties of ZnO and ZnO:Ga ceramics Optical, luminescence, and scintillation properties of ZnO and ZnO:Ga ceramics

2010-09-07

arxiv.org/abs/1009.1324v1

J.Opt.Technol.75:741,2008

Physics

Condensed Matter

Materials Science

Scientific paper

Uniaxial hot pressing has been used to obtain ceramics based on zinc oxide, and their optical, x-ray-structure, luminescence, and scintillation characteristics have been studied. It is shown that, by changing the concentration of the dopant (Ga) and the codopant (N), it is possible to change the intensities of the edge band (397.5 nm) and the intraband luminescence (510 nm) of the ZnO luminescence, as well as their ratio. Undoped ZnO ceramic has good transparency in the visible region and fairly high luminous yield: 9050 photons per MeV. Ceramic ZnO:Ga possesses intense edge luminescence with a falloff time of about 1 ns.

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