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Title: Method and apparatus for electron-only radiation detectors from semiconductor materials

Abstract

A system for obtaining improved resolution in room temperature semiconductor radiation detectors such as CdZnTe and Hgl.sub.2, which exhibit significant hole-trapping. A electrical reference plane is established about the perimeter of a semiconductor crystal and disposed intermediately between two oppositely biased end electrodes. The intermediate reference plane comprises a narrow strip of wire in electrical contact with the surface of the crystal, biased at a potential between the end electrode potentials and serving as an auxiliary electrical reference for a chosen electrode--typically the collector electrode for the more mobile charge carrier. This arrangement eliminates the interfering effects of the less mobile carriers as these are gathered by their electrode collector.

Inventors:
 [1]
  1. 429 Warwick Ave., San Leandro, CA 94577
Issue Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
OSTI Identifier:
873016
Patent Number(s):
6069360
Assignee:
Lund, James C. (429 Warwick Ave., San Leandro, CA 94577)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; apparatus; electron-only; radiation; detectors; semiconductor; materials; obtaining; improved; resolution; temperature; cdznte; hgl; exhibit; significant; hole-trapping; electrical; reference; plane; established; perimeter; crystal; disposed; intermediately; oppositely; biased; electrodes; intermediate; comprises; narrow; strip; wire; contact; surface; potential; electrode; potentials; serving; auxiliary; chosen; electrode-typically; collector; mobile; charge; carrier; arrangement; eliminates; interfering; effects; carriers; gathered; reference plane; charge carrier; semiconductor materials; electrical contact; semiconductor material; radiation detector; radiation detectors; collector electrode; arrangement eliminates; electrode potential; improved resolution; semiconductor radiation; obtaining improved; narrow strip; temperature semiconductor; exhibit significant; semiconductor crystal; /250/257/

Citation Formats

Lund, James C. Method and apparatus for electron-only radiation detectors from semiconductor materials. United States: N. p., 2000. Web.
Lund, James C. Method and apparatus for electron-only radiation detectors from semiconductor materials. United States.
Lund, James C. Sat . "Method and apparatus for electron-only radiation detectors from semiconductor materials". United States. https://www.osti.gov/servlets/purl/873016.
@article{osti_873016,
title = {Method and apparatus for electron-only radiation detectors from semiconductor materials},
author = {Lund, James C},
abstractNote = {A system for obtaining improved resolution in room temperature semiconductor radiation detectors such as CdZnTe and Hgl.sub.2, which exhibit significant hole-trapping. A electrical reference plane is established about the perimeter of a semiconductor crystal and disposed intermediately between two oppositely biased end electrodes. The intermediate reference plane comprises a narrow strip of wire in electrical contact with the surface of the crystal, biased at a potential between the end electrode potentials and serving as an auxiliary electrical reference for a chosen electrode--typically the collector electrode for the more mobile charge carrier. This arrangement eliminates the interfering effects of the less mobile carriers as these are gathered by their electrode collector.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {1}
}

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Works referenced in this record:

Charge Transport in Arrays of Semiconductor Gamma-Ray Detectors
journal, July 1995


Single‐polarity charge sensing in ionization detectors using coplanar electrodes
journal, November 1994


Novel electrode design for single-carrier charge collection in semiconductor nuclear radiation detectors
journal, September 1997


Unipolar charge sensing with coplanar electrodes-application to semiconductor detectors
journal, January 1995


Semiconductor drift chamber — An application of a novel charge transport scheme
journal, September 1984


Pixellated CdZnTe detector arrays
journal, December 1994

  • Doty, F. P.; Barber, H. B.; Augustine, F. L.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 353, Issue 1-3
  • https://doi.org/10.1016/0168-9002(94)91675-6