Two-Photon Absorption Characterization of HgCdTe

Abstract

Magneto-Optical measurements of Hg1-xCdxTe alloys have provided a new means of studying impurities and defects in this important II-VI material. Two- photon magnetoabsorption (TMPA) has been used to accurately determine the temperature dependence of the energy gap of various HgCdTe alloys, revealing behavior that deviates from currently accepted models. In addition, magnetooptical techniques have been used to detect the presence of both shallow and deep impurities/defects and accurately determine their activation energies, thus providing information necessary for understanding the electrical and optical properties of the material. Keywords: Defect characterization, Magneto-optical measurements, Two photon spectroscopy, Narrow band gap semiconductors.

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Document Details

Document Type
Technical Report
Publication Date
Jul 30, 1990
Accession Number
ADA225086

Entities

People

  • Chris L. Littler

Organizations

  • University of North Texas

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Band Gaps
  • Band Structures
  • Charge Carriers
  • Crystal Lattice Vibrations
  • Detectors
  • Electro-Optics
  • Energy Bands
  • Energy Gaps
  • Energy Levels
  • Low Temperature
  • Magnetic Fields
  • Narrow Band Gap Semiconductors
  • Optical Properties
  • Optics
  • Semiconductors
  • Solid State Physics
  • Two Photon Absorption

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.

Technology Areas

  • Microelectronics