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3-Point Measurement In Solid State Devices: (Novel) Artifacts And How To Avoid Them, Tobias Huber, Richard Schlesinger, Markus Kubicek, Jürgen Fleig, Alexander Schmid

Nonstoichiometric Compounds VII

There are two common methods to measure the impedance response of only one electrode of a solid-state electrochemical cell, microelectrodes or a three-terminal configuration. In aqueous electrochemistry, three-terminal configurations are widely used, however, implementing this method in solid-state electrochemistry is highly non-trivial. This work summarizes, which method is most suitable for different applications. We show potential error sources and evaluate each of them quantitatively with special emphasis on their impact in thin film electrode measurements. Evaluation is done by means of finite elements analysis (FEA), electric circuit simulations and conducted measurements.

Three potential error sources were identified as particularly crucial …