Avalanche breakdown in A l x G a1−x A s alloys and A l0.3G a 0.7 A s / G a A s multilayers
- 22 May 1995
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 66 (21) , 2876-2878
- https://doi.org/10.1063/1.113459
Abstract
The avalanche breakdown voltage (Vb) has been measured in a range of bulk AlxGa1−xAs alloys and Al0.3Ga0.7As/GaAs multilayer structures. The bulk alloys show a linear dependence of Vb on x up to at least x=0.6. Multilayers with thin (≤100 Å) dimensions follow this trend, with Vb being determined by the average Al fraction of the multilayer ‘‘pseudoalloy’’. For thicker (≥500 Å) layers Vb tends to a mean of the bulk values of the layers. The transition from pseudoalloy to bulklike behavior is interpreted in terms of the momentum and energy relaxation lengths, estimated for bulk GaAs using a Monte Carlo solution of the semiclassical transport equation.Keywords
This publication has 0 references indexed in Scilit: