Fig. 2From: Investigation of Energy Band at Atomic-Layer-Deposited ZnO/β-Ga2O3 (\( \overline{2}01 \)) HeterojunctionsHigh-resolution XPS spectra for core level and valence band maximum(VBM) of a Zn 2p core level spectrum and VBM from 40 nm ZnO/β-Ga2O3, b Ga 2p core level spectrum and VBM from bare β-Ga2O3, and c the core level spectra of Ga 2p and Zn 2p obtained from high-resolution XPS spectra of 5 nm ZnO/β-Ga2O3Back to article page