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Study of dispersive mobility in polyimide by surface voltage decay measurements
Aragoneses Aguado, Andrés; Mudarra López, Miguel; Belana Punseti, Juan; Diego Vives, José Antonio
Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear; Universitat Politècnica de Catalunya. DILAB - Laboratori de física dels materials dielèctrics
In order to study charge trapping and transport in polyimide, we have submitted samples of Kapton HN to corona charging and measured its surface potential decay with an electrostatic voltmeter. We propose a two terms mobility to explain the experimental data: a non dispersive contribution based on Toomer and Lewis model added to a dispersive process, which is associated with the disordered structure of the material. The non-dispersive model alone did not fit well to the data for short times, but our assumption makes the theoretical expresion fit succesfully to the experimental data. Some important parameters related to the charge transport properties of the material are determined and discussed.
Àrees temàtiques de la UPC::Física::Electromagnetisme::Conductivitat
Thermal conductivity
Polyimides
Space charge
Calor -- Conducció
Poliamides
Article - Draft
Article
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