Determination of the natural valence-band offset in the InxGa1−xAs system

Abstract
The natural valence‐band offset (NVBO) between semiconductors in a common anion alloy system can be determined through photoemission core level measurements. In this work, we tested this method in the InxGa1−xAs system. The NVBO between GaAs and InAs is measured to be 0.11±0.05 eV. This result is in approximate agreement with the experimental value of 0.17±0.07 eV determined by x‐ray photoemission spectroscopy measurements.