Usually when we measure the impedance for solid state electrolytes then they show a semicircle that starts at a high frequency and a line at a low frequency. Semicircle represents the bulk and the grain boundary resistance of electrolyte and the line show the diffusion due to blocking electrode.
I have a problem in my experiment. My sample is a thin film solid electrolyte deposited on a Pt coated Si substrate. Pt is the first blocking electrode and Au is coated on upper side of thin film electrolyte. When impedance is measured by EIS, then no semicircle followed by a line is shown. Only a line in the positive side of imaginary and real parts is shown. Same results are shown for thin film battery impedance measurement. Can anybody tell me what this means? Is there any mistake in my experiment?
Thank you.
Thanks for your answer.U mean,my sample is short circuit.Is it better to increase the thickness of electrolyte to decrease the possibility of short circuit?Can you please explain that what may be possible cause of positive values of imaginary part(Z")?Because ususlly Z" shows negative values.
I have found the answer that what is meant by positive value of imaginary part.Actually Imaginary part represent the "reactance" value of the impedance graph.Reactance, denoted X, is a form of opposition that electronic components exhibit to the passage of alternating current (alternating current) because of capacitance or inductance.Negative value of reactance represent the capacitance part while positive value shows the inductance part.
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