Simulation of Electric Field in Semi Insulating Au/CdTe/Au Detector under Flux

Conference · Sun Aug 02 00:00:00 EDT 2009

OSTI ID:1013439

Franc, J; James, R; Grill, R; Kubat, J; Belas, E; Hoschl, P; Moravec, P; Praus, P

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 the space charge originating from trapped photo-carriers starts to dominate at fluxes 10{sup 15}-10{sup 16}cm{sup -2}s{sup -1}, when the influence of contacts starts to be negligible.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States)
• Sponsoring Organization: DOE - National Nuclear Security Administration
• DOE Contract Number: DE-AC02-98CH10886
• OSTI ID: 1013439
• Report Number(s): BNL-90851-2009-CP; NN2001000; TRN: US201110%%661
• Resource Relation: Conference: SPIE Optics and Photonics; San Diego, CA; 20090802 through 20090806
• Country of Publication: United States
• Language: English

Related Subjects

98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION
BENDING
DISTRIBUTION
ELECTRIC FIELDS
ELECTRODES
OPTICS
POISSON EQUATION
RADIATION FLUX
SIMULATION
SPACE CHARGE
CdTe
detectors
recombination