Understanding volumetric capacitance in conducting polymers |
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| Authors: | Christopher M Proctor Jonathan Rivnay George G Malliaras |
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| Institution: | 1. Department of Bioelectronics, Ecole Nationale Supérieure des Mines, CMP‐EMSE, MOC, Gardanne, France;2. PARC, A Xerox Company, Palo Alto, California |
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| Abstract: | Recent measurements in poly(3,4‐ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) films show that capacitance scales with film volume. We discuss the ramifications of this finding and propose a simple model that describes capacitance in terms of sites in which ions injected from the electrolyte replace holes that are extracted from the film by a metal contact. We propose that volumetric capacitance is inversely proportional to the average distance between these sites. © 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2016 , 54, 1433–1436 |
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| Keywords: | bioelectronics conducting polymers electrochemical impedance mixed conductivity organic bioelectronics |
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