Surface Treatment And Protection Method For Cadium Zinc Telluride Crystals

Wright, Gomez W; James, Ralph B; Burger, Arnold; Chinn, Douglas A

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Title: Surface Treatment And Protection Method For Cadium Zinc Telluride Crystals

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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 NH4F and 10 w/o H2O2 in water.

Inventors:

Wright, Gomez W ^[1]; James, Ralph B ^[2]; Burger, Arnold ^[1]; Chinn, Douglas A ^[2]

Nashville, TN
Livermore, CA

Issue Date:: Tue Feb 21 00:00:00 EST 2006

Research Org.:: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)

OSTI Identifier:: 879901

Patent Number(s):: 7001849

Application Number:: 10/326430

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

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G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION
G01T1/2002 - {Optical details, e.g. reflecting or diffusing layers}

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
H01L31/02966 - {including ternary compounds, e.g. HgCdTe}
H01L31/1032 - {the devices comprising active layers formed only by AIIBVI compounds, e.g. HgCdTe IR photodiodes}
H01L31/1832 - {comprising ternary compounds, e.g. Hg Cd Te}

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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. Surface Treatment And Protection Method For Cadium Zinc Telluride Crystals.  United States: N. p., 2006. 
        Web.

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                    Wright, Gomez W, James, Ralph B, Burger, Arnold, & Chinn, Douglas A. Surface Treatment And Protection Method For Cadium Zinc Telluride Crystals.  United States.

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                    Wright, Gomez W, James, Ralph B, Burger, Arnold, and Chinn, Douglas A. Tue .  
        "Surface Treatment And Protection Method For Cadium Zinc Telluride Crystals".  United States.  https://www.osti.gov/servlets/purl/879901.

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@article{osti_879901,

  title        = {Surface Treatment And Protection Method For Cadium 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 NH4F and 10 w/o H2O2 in water.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Feb 21 00:00:00 EST 2006},

  month        = {Tue Feb 21 00:00:00 EST 2006}

}

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