Two Photon Absorption Characterization

Abstract

Magnetooptical measurements of Hg(1-x)Cd(x)Te 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; Group II-VI compounds.

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Document Details

Document Type
Technical Report
Publication Date
May 15, 1989
Accession Number
ADA210508

Entities

People

  • Chris Littler
  • David G. Seiler

Organizations

  • University of North Texas

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Band Gaps
  • Classification
  • Conduction Bands
  • Contracts
  • Energy Bands
  • Energy Gaps
  • Energy Levels
  • Heat Of Activation
  • Magnetic Fields
  • Materials
  • Measurement
  • Optical Properties
  • Resonance
  • Security
  • Transitions
  • Two Photon Absorption
  • Valence Bands

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.

Technology Areas

  • Microelectronics