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Title: Cadmium telluride photovoltaic radiation detector

Abstract

A dosimetry-type radiation detector is provided which employs a polycrystalline, chlorine-compensated cadmium telluride wafer fabricated to operate as a photovoltaic current generator used as the basic detecting element. A photovoltaic junction is formed in the wafer by painting one face of the cadmium telluride wafer with an n-type semi-conductive material. The opposite face of the wafer is painted with an electrically conductive material to serve as a current collector. The detector is mounted in a hermetically sealed vacuum containment. The detector is operated in a photovoltaic mode (zero bias) while DC coupled to a symmetrical differential current amplifier having a very low input impedance. The amplifier converts the current signal generated by radiation impinging upon the barrier surface face of the wafer to a voltage which is supplied to a voltmeter calibrated to read quantitatively the level of radiation incident upon the detecting wafer.

Inventors:
;
OSTI Identifier:
5377421
Assignee:
TIC; ERA-05-029544; EDB-80-085387
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; CDTE SEMICONDUCTOR DETECTORS; RELIABILITY; GAMMA DETECTION; AMPLIFIERS; CADMIUM TELLURIDES; CHLORINE; DOPED MATERIALS; ELECTRIC CONDUCTIVITY; TRAPPING; CADMIUM COMPOUNDS; CHALCOGENIDES; DETECTION; ELECTRICAL PROPERTIES; ELECTRONIC EQUIPMENT; ELEMENTS; HALOGENS; MATERIALS; MEASURING INSTRUMENTS; NONMETALS; PHYSICAL PROPERTIES; RADIATION DETECTION; RADIATION DETECTORS; SEMICONDUCTOR DETECTORS; TELLURIDES; TELLURIUM COMPOUNDS; 440101* - Radiation Instrumentation- General Detectors or Monitors & Radiometric Instruments

Citation Formats

Agouridis, D.C., and Fox, R.J. Cadmium telluride photovoltaic radiation detector. United States: N. p., Web.
Agouridis, D.C., & Fox, R.J. Cadmium telluride photovoltaic radiation detector. United States.
Agouridis, D.C., and Fox, R.J. . "Cadmium telluride photovoltaic radiation detector". United States.
@article{osti_5377421,
title = {Cadmium telluride photovoltaic radiation detector},
author = {Agouridis, D.C. and Fox, R.J.},
abstractNote = {A dosimetry-type radiation detector is provided which employs a polycrystalline, chlorine-compensated cadmium telluride wafer fabricated to operate as a photovoltaic current generator used as the basic detecting element. A photovoltaic junction is formed in the wafer by painting one face of the cadmium telluride wafer with an n-type semi-conductive material. The opposite face of the wafer is painted with an electrically conductive material to serve as a current collector. The detector is mounted in a hermetically sealed vacuum containment. The detector is operated in a photovoltaic mode (zero bias) while DC coupled to a symmetrical differential current amplifier having a very low input impedance. The amplifier converts the current signal generated by radiation impinging upon the barrier surface face of the wafer to a voltage which is supplied to a voltmeter calibrated to read quantitatively the level of radiation incident upon the detecting wafer.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {},
month = {}
}