CALCULATION OF THE ELECTRIC-FIELD IN GAAS PARTICLE DETECTORS

Authors
KUBICKI T LUBELSMEYER K ORTMANNS J PANDOULAS D SYBEN O TOPOROWSKY M XIAO WJ
Citation
T. Kubicki et al., CALCULATION OF THE ELECTRIC-FIELD IN GAAS PARTICLE DETECTORS, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 345(3), 1994, pp. 468-473
Citations number
7
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
345
Issue
3
Year of publication
1994
Pages
468 - 473
Database
ISI
SICI code
0168-9002(1994)345:3<468:COTEIG>2.0.ZU;2-4
Abstract
We have simulated the electric field in GaAs surface barrier particle detectors in order to explain the observation of reduced charge collec tion efficiency. Using the Poisson and continuity equations the electr ic potential can be calculated numerically in terms of the ionization of deep levels and the spatial variation of the quasi-Fermi-level in G aAs. The dependence of the electric field on different parameters (bia s voltage, leakage current, material parameters) has been studied and predictions of the simulation have been experimentally verified.