THERMOELECTRIC POWER GENERATION AND RELATED PHENOMENA

Abstract

The solute build-up technique (crystallization from solution) was further evaluated. An ingot of GaAs was prepared to test the technique with newly developed equipment consisting of a 3-zone furnace arrangement. The main furnace provided for well-controlled, linear temperature gradients of the order of 5 to 10 degrees C/cm up to 1200 C. Results indicated that the technique is applicable for the preparation of sound, directionally grown ingots of intermetallics at temperatures far below their melting points and under conditions of relatively low activity of solute. Values of the energy gap were obtained optically for the pseudobinary system GaA -AlAs from 0.0 to 45.0 mol-% AlAs. The value varied linearly with AlAs content. High-temperature measurement apparatus designed for the measurement of resistivity, Hall coefficient, and thermoelectric power was successfully operated up to 730 C. Measurements were completed of the thermal diffusivity of InSb up to 500 C using a back-surfacetemperature method.

Document Details

Document Type
Technical Report
Publication Date
Nov 15, 1960
Accession Number
AD0260331

Entities

Organizations

  • Battelle Memorial Institute

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Energy Gaps
  • High Temperature
  • Isotherms
  • Measurement
  • Melting Point
  • Temperature Gradients
  • Thermal Diffusivity
  • Thermoelectric Power Generation
  • Transition Temperature

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Semiconductor Device Technology