Ionizing Radiation Detector
Abstract
A CdZnTe (CZT) crystal provided with a native CdO dielectric coating to reduce surface leakage currents and thereby, improve the resolution of instruments incorporating detectors using CZT crystals is disclosed. A two step process is provided for forming the dielectric coating which includes etching the surface of a CZT crystal with a solution of the conventional bromine/methanol etch treatment, and passivating the CZT crystal surface with a solution of 10 w/o NH.sub.4 F and 10 w/o H.sub.2 O.sub.2 in water after attaching electrical contacts to the crystal surface.
- Inventors:
-
- Nashville, TN
- Livermore, CA
- Issue Date:
- Research Org.:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- OSTI Identifier:
- 879898
- Patent Number(s):
- 6649915
- Application Number:
- 10/325995
- Assignee:
- Sandia National Laboratories (Livermore, CA)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
- DOE Contract Number:
- AC04-94AL85000
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Wright, Gomez W, James, Ralph B, Burger, Arnold, and Chinn, Douglas A. Ionizing Radiation Detector. United States: N. p., 2003.
Web.
Wright, Gomez W, James, Ralph B, Burger, Arnold, & Chinn, Douglas A. Ionizing Radiation Detector. United States.
Wright, Gomez W, James, Ralph B, Burger, Arnold, and Chinn, Douglas A. Tue .
"Ionizing Radiation Detector". United States. https://www.osti.gov/servlets/purl/879898.
@article{osti_879898,
title = {Ionizing Radiation Detector},
author = {Wright, Gomez W and James, Ralph B and Burger, Arnold and Chinn, Douglas A},
abstractNote = {A CdZnTe (CZT) crystal provided with a native CdO dielectric coating to reduce surface leakage currents and thereby, improve the resolution of instruments incorporating detectors using CZT crystals is disclosed. A two step process is provided for forming the dielectric coating which includes etching the surface of a CZT crystal with a solution of the conventional bromine/methanol etch treatment, and passivating the CZT crystal surface with a solution of 10 w/o NH.sub.4 F and 10 w/o H.sub.2 O.sub.2 in water after attaching electrical contacts to the crystal surface.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Nov 18 00:00:00 EST 2003},
month = {Tue Nov 18 00:00:00 EST 2003}
}
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