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Proceedings Paper

Nondestructive characterization of Hg1-xCdxTe layer structures by magneto-thermoelectric measurements
Author(s): Jan W. Baars; D. Brink
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Paper Abstract

The thermoelectric properties of n-type Hg0.79Cd0.21Te (MCT) and of MCT layers with n-p-n structure were investigated in transverse magnetic fields (B (perpendicular) $DELT; 0 <EQ B <EQ 12 kG) using the lateral gradient method at temperatures between 15 K and 300 K. The experimental results were analyzed regarding the contributions of electrons and holes to the magneto-thermoelectric effect and the scattering mechanisms involved. The analysis is based on a nonparabolic conduction band and Landau quantization together with expressions for the band gap, the intrinsic carrier density, and the magnetoresistance. The magneto-thermoelectric effect was found to be a useful nondestructive tool for determining the doping and composition of the constituent layers of MCT n-p-n structures.

Paper Details

Date Published: 7 December 1993
PDF: 10 pages
Proc. SPIE 2021, Growth and Characterization of Materials for Infrared Detectors, (7 December 1993); doi: 10.1117/12.164947
Show Author Affiliations
Jan W. Baars, Fraunhofer-Institut fuer Angewandte Festkoerperphysik (Germany)
D. Brink, Fraunhofer-Institut fuer Angewandte Festkoerperphysik (Germany)


Published in SPIE Proceedings Vol. 2021:
Growth and Characterization of Materials for Infrared Detectors
Randolph E. Longshore; Jan W. Baars, Editor(s)

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