O+ implantation and annealing in n-type InAlAs

Abstract
The dependence of the electrical properties of oxygen‐implanted p+n In0.52Al0.48As diodes on annealing temperatures has been studied. Current‐voltage and capacitance‐voltage measurements reveal that a semi‐insulating layer is created by oxygen implantation in n‐InAlAs which is found to be stable up to at least 720 °C. The presence of this semi‐insulating layer significantly reduces the junction capacitance of the diode and the diode current at high bias levels.