• Media type: Text; Report; E-Book
  • Title: A coarse-grained electrothermal model for organic semiconductor devices
  • Contributor: Glitzky, Annegret [Author]; Liero, Matthias [Author]; Nika, Grigor [Author]
  • Published: Berlin : Weierstraß-Institut für Angewandte Analysis und Stochastik, 2021
  • Issue: published Version
  • Language: English
  • DOI: https://doi.org/10.34657/8578; https://doi.org/10.20347/WIAS.PREPRINT.2822
  • ISSN: 2198-5855
  • Keywords: organic semiconductor ; weak solutions ; coarse-grained model ; Drift-diffusion ; charge & heat transport ; electrothermal interaction
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  • Description: We derive a coarse-grained model for the electrothermal interaction of organic semiconductors. The model combines stationary drift-diffusion based electrothermal models with thermistor type models on subregions of the device and suitable transmission conditions. Moreover, we prove existence of a solution using a regularization argument and Schauder's fixed point theorem. In doing so, we extend recent work by taking into account the statistical relation given by the Gauss--Fermi integral and mobility functions depending on the temperature, charge-carrier density, and field strength, which is required for a proper description of organic devices.
  • Access State: Open Access