Modeling capacitance effect in organic polymers

Harry L. Kwok

doi:10.1117/12.473002

24 June 2002 Modeling capacitance effect in organic polymers

Harry L. Kwok

Proceedings Volume 4806, Complex Mediums III: Beyond Linear Isotropic Dielectrics; (2002) https://doi.org/10.1117/12.473002
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

We have developed an extension of the Drude model for oscillators to determine capacitance in organic polymers. The extension covers the effect of time delay caused by dispersion in the carrier transport. This was done using a complex mobility parameter. Negative capacitance effect could be observed in simulation at low frequencies provided that model parameters are appropriately chosen. In matching the simulation results to a set of data reported, we have computed very reasonable values of the transport parameters in regimes where either positive capacitance or negative capacitance is dominant. Simplified equations based on the model were highlighted to accommodate for specific instances where the transport parameters could be directly extracted. We believe our model is a better approach to extract transport parameters from capacitance-frequency curves when detailed conduction processes could not be easily identified such as in an environment of disordered complex molecules.

Citation Download Citation

Harry L. Kwok "Modeling capacitance effect in organic polymers", Proc. SPIE 4806, Complex Mediums III: Beyond Linear Isotropic Dielectrics, (24 June 2002); https://doi.org/10.1117/12.473002

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