Monte Carlo Simulations of charge Transport in Organic Semiconductors

Monte Carlo Simulations of charge Transport in Organic Semiconductors

Bibliographic Details
Main Author: Aung, Pyie Phyo
Language:English
Published: University of Akron / OhioLINK 2014
Subjects:
Physics
Polymers
Polymer Chemistry
Photovoltaic Organic Semiconductor Solar Cells Charge Transport
Online Access:http://rave.ohiolink.edu/etdc/view?acc_num=akron1418272111
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spelling ndltd-OhioLink-oai-etd.ohiolink.edu-akron14182721112021-08-03T06:28:36Z Monte Carlo Simulations of charge Transport in Organic Semiconductors Aung, Pyie Phyo Physics Polymers Polymer Chemistry Photovoltaic Organic Semiconductor Solar Cells Charge Transport Thin film organic semiconductors have applications in electronic devices such as tran- sistors, light emitting diodes, and organic solar cells. The performance of such devices depends on the mobility of the charge carriers which is strongly affected by the mor- phology of the material. In this work, we perform Monte Carlo simulations to study charge transport in lattice models of homogeneous and heterogeneous materials. The model device consists of a layer of the material between two electrodes at different potentials. Charge carriers are injected from the electrodes and move by hopping un- der the influence of the electric field and Coulomb interactions. To model the effect of polymer chain connectivity on charge transport we include an energetic barrier to hopping between sites on different chains.We measure current-voltage (I - V ) characteristics of model devices and de- termine the mobility of the charge carriers from the slope of the I - V curves in the ohmic regime. We validate our algorithms with simulations of simple devices consist- ing of two parallel layers of donor and acceptor materials between the electrodes. To study the effect of ordered domains in polymeric semiconductors we simulate charge transport in a recently developed lattice model for polymers that undergo an order- disorder transition. We find that ordering in the material leads to strong anisotropies with increased mobility for transport parallel to the ordered domains and reduced mobility for perpendicular transport. 2014 English text University of Akron / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=akron1418272111 http://rave.ohiolink.edu/etdc/view?acc_num=akron1418272111 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
collection NDLTD
language English
sources NDLTD
topic Physics
Polymers
Polymer Chemistry
Photovoltaic Organic Semiconductor Solar Cells Charge Transport
spellingShingle Physics
Polymers
Polymer Chemistry
Photovoltaic Organic Semiconductor Solar Cells Charge Transport
Aung, Pyie Phyo
Monte Carlo Simulations of charge Transport in Organic Semiconductors
author Aung, Pyie Phyo
author_facet Aung, Pyie Phyo
author_sort Aung, Pyie Phyo
title Monte Carlo Simulations of charge Transport in Organic Semiconductors
title_short Monte Carlo Simulations of charge Transport in Organic Semiconductors
title_full Monte Carlo Simulations of charge Transport in Organic Semiconductors
title_fullStr Monte Carlo Simulations of charge Transport in Organic Semiconductors
title_full_unstemmed Monte Carlo Simulations of charge Transport in Organic Semiconductors
title_sort monte carlo simulations of charge transport in organic semiconductors
publisher University of Akron / OhioLINK
publishDate 2014
url http://rave.ohiolink.edu/etdc/view?acc_num=akron1418272111
work_keys_str_mv AT aungpyiephyo montecarlosimulationsofchargetransportinorganicsemiconductors
_version_ 1719437348729520128

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