Method for surface treatment of a cadmium zinc telluride crystal

Patent · Fri Jan 01 00:00:00 EST 1999

OSTI ID:872427

James, Ralph ^[1]; Burger, Arnold ^[2]; Chen, Kuo-Tong ^[3]; Chang, Henry ^[4]

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1. 5420 Lenore Ave., Livermore, CA 94550
2. 753 Adkisson La., Nashville, TN 37205
3. 7800 River Fork Dr., Nashville, TN 37221
4. 6535 Premier Dr., Apt. A7, Nashville, TN 37209

A method for treatment of the surface of a CdZnTe (CZT) crystal that reduces surface roughness (increases surface planarity) and provides an oxide coating to reduce surface leakage currents and thereby, improve resolution. A two step process is disclosed, etching the surface of a CZT crystal with a solution of lactic acid and bromine in ethylene glycol, following the conventional bromine/methanol etch treatment, and after attachment of electrical contacts, oxidizing the CZT crystal surface.

• Research Organization: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
• DOE Contract Number: AC04-94AL85000
• Assignee: James, Ralph (5420 Lenore Ave., Livermore, CA 94550);Burger, Arnold (753 Adkisson La., Nashville, TN 37205);Chen, Kuo-Tong (7800 River Fork Dr., Nashville, TN 37221);Chang, Henry (6535 Premier Dr., Apt. A7, Nashville, TN 37209)
• Patent Number(s): US 5933706
• OSTI ID: 872427
• Country of Publication: United States
• Language: English

Related Subjects

method
surface
treatment
cadmium
zinc
telluride
crystal
cdznte
czt
reduces
roughness
increases
planarity
provides
oxide
coating
reduce
leakage
currents
improve
resolution
step
process
disclosed
etching
solution
lactic
acid
bromine
ethylene
glycol
following
conventional
methanol
etch
attachment
electrical
contacts
oxidizing
leakage currents
surface leakage
ethylene glycol
electrical contacts
lactic acid
oxide coating
electrical contact
surface roughness
cadmium zinc
leakage current
surface treatment
step process
reduce surface
zinc telluride
reduces surface
crystal surface
czt crystal
telluride crystal
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