Study on the time-resolved detection performance of β-Ga₂O₃-based SBUV photodetectors: surface chemical analysis and the impacts of non-V_O factors

The sub-intense component in the XPS O 1s spectra of β-Ga₂O₃ is not associated with oxygen vacancies, the intrinsic indirect bandgap and the surface traps contribute to the extension of the response and recovery times of β-Ga₂O₃-based PDs.