Monte Carlo simulation of controlled charge carriers diffusion in highly ordered iodine doped pentacene film
✍ Scribed by Demeyu, L. ;Stafström, S. ;Bekele, M.
- Book ID
- 105364417
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 784 KB
- Volume
- 204
- Category
- Article
- ISSN
- 0031-8965
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✦ Synopsis
Abstract
We propose and model an experiment where charge carriers in a highly ordered iodine doped two‐dimensional (2D) pentacene (PEN) film layer can be controlled by an external parabolic potential defined by a gate arrangement. The potential has its minimum at the center of the 2D organic semiconductor layer. Calculating the discrete interaction potential numerically, and using the Arrhenius equation modified to include effects of the external and internal fields to calculate time and position dependent probabilities, we carry out Monte Carlo simulations to predict the charge concentration profiles. The positive and negative charge concentration profiles are found to broaden outward and inward respectively with the increase of concentration when the external parabolic potential and the temperature are kept constant. A novel transition from a concentration profile controlled by the external potential to a profile determined by the internal potential is observed for increasing doping concentration. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)