THERMOELECTRIC PROPERTIES OF SELENIDES AND TELLURIDES OF GROUPS VB AND VIB METALS AND THEIR SOLID SOLUTIONS

Abstract

The solubility and electrical effects of cation substituents, anion substituents, interstitial solutes and deviations from stoichiometry in WSe2 and, to a lesser extent, in MoSe2 were studied quantitatively. The p-type composition W.99Ta.01Se2, continues to be the best thermoelectric material in this system, with a Figure of Merit of 0.0007 -3/deg at 600 C. Hall effect measurements and related data for Ta-doped WSe2 can be interpreted consistently on the basis of a simple extrinsic semiconductor model. A re-examination of encapsulation problems with W led to the decision to use prefabricated ceramic tubes with ferrous metal end caps for protection against degradation at high temperatures, rather than Sauereisen cement coatings. (Author)

Document Details

Document Type
Technical Report
Publication Date
May 18, 1962
Accession Number
AD0290309

Entities

People

  • J.t. Looby
  • W.t. Hicks

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Coatings
  • Compound Semiconductors
  • Electrical Properties
  • Encapsulation
  • Extrinsic Semiconductors
  • Figure Of Merit
  • Hall Effect
  • High Temperature
  • Materials
  • Semiconductors
  • Solid Solutions

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Polymer Science and Technology
  • Solar Photovoltaics and Thermoelectric Devices.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene