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Proceedings Paper

Mechanisms of the passage of dark currents through Cd(Zn)Te semi-insulating crystals
Author(s): V. Sklyarchuk; P. Fochuk; I. Rarenko; Z. Zakharuk; O. Sklyarchuk; Ye. Nykoniuk; A. Rybka; V. Kutny; A. E. Bolotnikov; R. B. James
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Paper Abstract

We investigated the passage of dark currents through semi-insulating crystals of Cd(Zn)Te with weak n-type conductivity that are used widely as detectors of ionizing radiation. The crystals were grown from a tellurium solution melt at 800 оС by the zone-melting method, in which a polycrystalline rod in a quartz ampoule was moved through a zone heater at a rate of 2 mm per day. The synthesis of the rod was carried out at ~1150 оС. We determined the important electro-physical parameters of this semiconductor, using techniques based on a parallel study of the temperature dependence of current-voltage characteristics in both the ohmic and the space-charge-limited current regions. We established in these crystals the relationship between the energy levels and the concentrations of deep-level impurity states, responsible for dark conductivity and their usefulness as detectors.

Paper Details

Date Published: 5 September 2014
PDF: 10 pages
Proc. SPIE 9213, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XVI, 92131G (5 September 2014); doi: 10.1117/12.2062754
Show Author Affiliations
V. Sklyarchuk, Yuriy Fedkovych Chernivtsi National Univ. (Ukraine)
P. Fochuk, Yuriy Fedkovych Chernivtsi National Univ. (Ukraine)
I. Rarenko, Yuriy Fedkovych Chernivtsi National Univ. (Ukraine)
Z. Zakharuk, Yuriy Fedkovych Chernivtsi National Univ. (Ukraine)
O. Sklyarchuk, Yuriy Fedkovych Chernivtsi National Univ. (Ukraine)
Ye. Nykoniuk, National Univ. of Water Management and Natural Resources Application (Ukraine)
A. Rybka, National Science Ctr. Kharkov Institute of Physics and Technology (Ukraine)
V. Kutny, National Science Ctr. Kharkov Institute of Physics and Technology (Ukraine)
A. E. Bolotnikov, Brookhaven National Lab. (United States)
R. B. James, Brookhaven National Lab. (United States)


Published in SPIE Proceedings Vol. 9213:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XVI
Arnold Burger; Larry Franks; Ralph B. James; Michael Fiederle, Editor(s)

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