Electrical Properties of GaAs Overgrown by Molecular Beam Epitaxy on Gallium Ion Implanted Substrates

Autor: Ishibashi, Tadao, Fischer, Albrecht, Andreas D. Wieck, Andreas D. Wieck, Klaus H. Ploog, Klaus H. Ploog
Zdroj: Japanese Journal of Applied Physics; May 1993, Vol. 32 Issue: 5 pL742-L742, 1p
Abstrakt: We describe the electrical properties of GaAs overgrown by molecular beam epitaxy on 100 kV Ga+ion implanted substrates. Room-temperature carrier mobilities of the overgrown layers maintain good values for Ga doses up to 1014/cm2. With increasing Ga dose, the conductances of the overgrown layers shows a significant reduction, which is attributed to carrier depletion caused by ionized deep acceptors in the Ga-implanted layer. This effect can be almost entirely screened out when GaAs layers are overgrown directly on Ga-implanted semi-insulating substrates.
Databáze: Supplemental Index