Composite Material Studies for Low Temperature Thermionic Emission.

Abstract

The primary objectives of this project were to prepare and measure the photoemissive properties of metal-semiconductor inhomogeneous composite systems for use as low temperature thermionic emitters. The system investigated in this study was Au-CuInSe2 where the Au was in the form of particles 5-50 nm in size dispersed throughout p-type CuInSe2. Much like oxide-coated cathodes the surface of this composite must be treated in order to reduce the barrier to emission of electrons. If the electron affinity of the semiconductor is made close to zero or negative by appropriate surface treatments one has a system with an electron thermal energy barrier of 1 eV at room temperature. (MM)

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Document Details

Document Type
Technical Report
Publication Date
May 26, 1994
Accession Number
ADA292159

Entities

People

  • Clayton W. Bates Jr.

Organizations

  • Stanford University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Composite Materials
  • Current Density
  • Electron Density
  • Electrons
  • Emission
  • Energy Bands
  • Low Temperature
  • Materials
  • Materials Engineering
  • Materials Science
  • Metal Matrix Composites
  • Oxides
  • Particle Size
  • Particles
  • Semiconductors
  • Surface Finishing
  • Thermionic Emission

Fields of Study

  • Materials science

Readers

  • Electronics Engineering
  • Thin Film Deposition Science.

Technology Areas

  • Microelectronics