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Monte Carlo Simulations of charge Transport in Organic Semiconductors

Aung, Pyie Phyo
http://rave.ohiolink.edu/etdc/view?acc_num=akron1418272111

Abstract Details

2014, Master of Science, University of Akron, Physics.
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.
Jutta Luettmer-Strathmann, Dr. (Advisor)
Yu-Kuang Hu, Dr. (Committee Member)
Robert Mallik, Dr. (Committee Member)
50 p.
Physics; Polymer Chemistry; Polymers
Photovoltaic Organic Semiconductor Solar Cells Charge Transport

Recommended Citations

Citations

  • Aung, P. P. (2014). Monte Carlo Simulations of charge Transport in Organic Semiconductors [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1418272111

    APA Style (7th edition)

  • Aung, Pyie Phyo. Monte Carlo Simulations of charge Transport in Organic Semiconductors . 2014. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1418272111.

    MLA Style (8th edition)

  • Aung, Pyie Phyo. "Monte Carlo Simulations of charge Transport in Organic Semiconductors ." Master's thesis, University of Akron, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1418272111

    Chicago Manual of Style (17th edition)

akron1418272111
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© 2014, all rights reserved.
This open access ETD is published by University of Akron and OhioLINK.
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