Anomalous behavior of ion-implanted GaSb

Abstract

Anomalous elevations up to 6 μm of the ion-implanted GaSb surface were observed. This swelling phenomenon is related to the formation of a porous layer and is dependent on the mass, energy, and dose of the implanted ions. A strong amount of oxygen was measured in the porous layers but this oxygen is likely not responsible for the swelling. The behavior of implanted GaSb is very similar to that of InSb previously described.