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Abstract
p Si Ba Sr TiO xx heterojunction properties are investigated by electrochemical impedance spectroscopy method for the first time. The general equivalent circuit model is proposed in circuit description code as: Cf , Rf , Ch,Rh,Rp, where Cf , Rf are the Ba Sr TiO xx 13 film conditioned capacitance and resistance, Ch, Rh are the heterojunction depletion layer capacitance and resistance, respectively, Rp is the series resistance. It is stated that the Bode plot curves of the structure in air mostly affected by the depletion layer capacitance of heterojunction () CVh .
