Surface treatment and protection method for cadmium zinc telluride crystals
Abstract
A method for treatment of the surface of a CdZnTe (CZT) crystal that provides a native dielectric coating to reduce surface leakage currents and thereby, improve the resolution of instruments incorporating detectors using CZT crystals. A two step process is disclosed, etching the surface of a CZT crystal with a solution of the conventional bromine/methanol etch treatment, and after attachment of electrical contacts, 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.
- Inventors:
-
- Nashville, TN
- Livermore, CA
- Issue Date:
- Research Org.:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- OSTI Identifier:
- 875075
- Patent Number(s):
- 6524966
- Assignee:
- Sandia National Laboratories (Livermore, CA)
- 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:
- surface; treatment; protection; method; cadmium; zinc; telluride; crystals; cdznte; czt; crystal; provides; native; dielectric; coating; reduce; leakage; currents; improve; resolution; instruments; incorporating; detectors; step; process; disclosed; etching; solution; conventional; brominemethanol; etch; attachment; electrical; contacts; passivating; 10; nhsub4; hsub2; osub2; water; electrical contact; surface treatment; cadmium zinc; zinc telluride; reduce surface; /438/
Citation Formats
Wright, Gomez W, James, Ralph B, Burger, Arnold, and Chinn, Douglas A. Surface treatment and protection method for cadmium zinc telluride crystals. United States: N. p., 2003.
Web.
Wright, Gomez W, James, Ralph B, Burger, Arnold, & Chinn, Douglas A. Surface treatment and protection method for cadmium zinc telluride crystals. United States.
Wright, Gomez W, James, Ralph B, Burger, Arnold, and Chinn, Douglas A. Wed .
"Surface treatment and protection method for cadmium zinc telluride crystals". United States. https://www.osti.gov/servlets/purl/875075.
@article{osti_875075,
title = {Surface treatment and protection method for cadmium zinc telluride crystals},
author = {Wright, Gomez W and James, Ralph B and Burger, Arnold and Chinn, Douglas A},
abstractNote = {A method for treatment of the surface of a CdZnTe (CZT) crystal that provides a native dielectric coating to reduce surface leakage currents and thereby, improve the resolution of instruments incorporating detectors using CZT crystals. A two step process is disclosed, etching the surface of a CZT crystal with a solution of the conventional bromine/methanol etch treatment, and after attachment of electrical contacts, 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 2003},
month = {Wed Jan 01 00:00:00 EST 2003}
}
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.
Works referenced in this record:
Performance of CdZnTe coplanar-grid gamma-ray detectors
journal, June 1996
- Luke, P. N.; Eissler, E. E.
- IEEE Transactions on Nuclear Science, Vol. 43, Issue 3
Unipolar charge sensing with coplanar electrodes-application to semiconductor detectors
journal, January 1995
- Luke, P. N.
- IEEE Transactions on Nuclear Science, Vol. 42, Issue 4
Exploratory search for improved oxidizing agents used in the reduction of surface leakage currents of CdZnTe detectors
conference, October 1999
- Wright, Gomez W.; Chinn, Douglas; Brunett, Bruce A.
- SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, SPIE Proceedings