Growth of InAs Whiskers in Wurtzite Structure

Abstract
InAs was evaporated onto glass substrates coated with Ag or Au films. Whiskers were grown while maintaining these substrates at 450°C. The crystal structure of the whiskers was determined to be of hexagonal wurtzite type by X-ray diffraction study. Lattice constants were a=4.27Å, and c=7.02Å. Conversion of hexagonal InAs to cubic was made by after-heating for 5 minutes at 800°C. The appearance of InAs whiskers is considered to be due to stacking faults in cubic (111) planes.