Accession Number:

AD0774967

Title:

New Methods for Growth and Characterization of GaAs and Mixed III-V Semiconductor Crystals

Descriptive Note:

Technical rept. (Final), 1 Jul 1970-30 Jun 1973

Corporate Author:

UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES ELECTRONIC SCIENCES LAB

Personal Author(s):

• Wilcox, William R.
• Allred, Worth P.
• Crowell, Clarence R.
• Esquivel, Agerico
• Gershenzon, Murray

Report Date:

1973-06-30

Pagination or Media Count:

344.0

Abstract:

The purpose of this program was to develop new and improved methods for the growth and characterization of gallium arsenide GaAs and mixed III-V semiconductor crystals. This was accomplished by laboratory experiments and related theoretical research. New Czochralski, floating zone melting, gradient freeze, and liquid epitaxy techniques for GaAs growth were developed and studied. The travelling heater method for GaAs and III-V alloys was studied. Material was characterized by spark-source mass spectrometry, ion microprobe mass analyzer, glow-discharge spectroscopy, infrared absorption, dislocation etching, X-ray topography, cathodoluminescence, photoluminescence, Hall measurements, photothreshold, and C-V-W measurements on Schottky barriers. Dislocations generated by bending were observed by cathodoluminescence and the effect on electrical properties determined. A new technique for measuring and controlling oxygen in gallium melts was developed and studied.

Descriptors:

• *CRYSTAL GROWTH
• *GALLIUM ARSENIDES
• *SEMICONDUCTORS
• CATHODOLUMINESCENCE
• DISLOCATIONS
• DOPING
• ELECTRICAL PROPERTIES
• EPITAXIAL GROWTH
• FIELD EFFECT TRANSISTORS
• HALL EFFECT
• IMPURITIES
• MANUFACTURING
• PHOTOLUMINESCENCE
• PLASTIC DEFORMATION
• POLISHES

Subject Categories:

• Crystallography
• Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE