【International Papers】 Investigation of a defect in the β-Ga₂O₃ substrate material from capacitance transients

Abstract

        The defect ∼0.8 eV below the conduction band edge of β-Ga₂O₃ wide bandgap semiconductor is investigated using the matched Arrhenius-equation projection technique that offers substantial improvement over the conventional deep level transient spectroscopy technique. An experimental technique is developed to extract activation energy E_a and attempt-to-escape frequency ν₀ of defects bypassing both the rate-window treatment and the Arrhenius plot. Only raw capacitance transients in the time domain are needed with this technique. The capacitance transients are projected between the temperature and time domains as well as to E_a and ν₀ domains. Extraction of E_a and ν₀ is accomplished by matching the projected and experimental capacitance transients to each other.