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Proceedings Paper

Simulation of electric field profile in semi insulating Au/CdZnTe/Au detector under flux
Author(s): J. Franc; R. Grill; R. James; J. Kubát; E. Belas; P. Moravec; P. Hoschl; P. Praus
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Paper Abstract

We report our simulations on the profile of the electric field in semi insulating CdTe and CdZnTe with Au contacts under radiation flux. The type of the space charge and electric field distribution in the Au/CdTe/Au structure is at high fluxes result of a combined influence of charge formed due to band bending at the electrodes and from photo generated carriers, which are trapped at deep levels. Simultaneous solution of drift-diffusion and Poisson equations is used for the calculation. We show, that he space charge originating from trapped photo-carriers starts to dominate at fluxes 1015-1016cm-2s-1, when the influence of contacts starts to be negligible.

Paper Details

Date Published: 11 September 2009
PDF: 13 pages
Proc. SPIE 7449, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XI, 74490A (11 September 2009); doi: 10.1117/12.829271
Show Author Affiliations
J. Franc, Charles Univ. in Prague (Czech Republic)
R. Grill, Charles Univ. in Prague (Czech Republic)
R. James, Brookhaven National Lab. (United States)
J. Kubát, Charles Univ. in Prague (Czech Republic)
E. Belas, Charles Univ. in Prague (Czech Republic)
P. Moravec, Charles Univ. in Prague (Czech Republic)
P. Hoschl, Charles Univ. in Prague (Czech Republic)
P. Praus, Charles Univ. in Prague (Czech Republic)


Published in SPIE Proceedings Vol. 7449:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XI
Ralph B. James; Larry A. Franks; Arnold Burger, Editor(s)

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