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Studies of Charge Collection in GaAs Radiation Detectors

Published online by Cambridge University Press:  21 February 2011

K Berwick ,
M R Brozel ,
C M Butiar ,
M Cowperthwaite  and
Y Hou
K Berwick
Affiliation:
Centre for Electronic Materials, UMIST, Manchester, M60 1AD, UK
M R Brozel
Affiliation:
Centre for Electronic Materials, UMIST, Manchester, M60 1AD, UK
C M Butiar
Affiliation:
Dept. of Physics, University of Sheffield, Sheffield, S3 7RH, UK
M Cowperthwaite
Affiliation:
Centre for Electronic Materials, UMIST, Manchester, M60 1AD, UK
Y Hou
Affiliation:
Dept. of Physics, University of Sheffield, Sheffield, S3 7RH, UK
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Abstract

The behaviour of the charge collection efficiency of particle detectors fabricated from Semi-Insulating (SI) Liquid Encapsulated Czochralski (LEC) GaAs as a function of applied bias is investigated for alpha particles and it is shown that it cannot be explained by simple models that assume a uniform electric field across the detector. To investigate this the electric field within the SI GaAs has been studied. We have attempted to correlate the measured charge collection efficiency with the observed field distributions. Some correlation is found but other effects may also be present.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 302: Symposium F – Semiconductors for Room-Temperature Radiation Detector Applications , 1993 , 363
Copyright
Copyright © Materials Research Society 1993

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References

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