THEORETICAL QUARTERLY PROGRESS REPORT NO. 4
Abstract
Bismuth telluride and its alloys are the most important thermoelectric materials for appli cations near room temperature. In the past, it has always been made n-type by adding a foreign impurity. Some measurements are reported on material made n-type by adding excess tellurium. At very low temperatures, the electron mobility is about ten times larger than has been pre viously reported. In the temperature range where the material is a useful thermoelectric material, there is little change in the mobility. However, the larger mobility at helium tem peratures may allow one to do experiments such as cyclotron resonance which will give a better measurement of the electronic band structure than has been possible previously. Results of an investigation of the Seebeck coefficient, thermal conductivity, and electrical conductiv ity of bismuth single crystals are given.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1962
- Accession Number
- AD0410287
Entities
Organizations
- Westinghouse Electric Corporation