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Charge carriers and excitons transport in an organic solar cell-theory and simulation

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Abstract

An organic solar cell model is developed that consists of both excitonic and classical bipolar aspects of solar cells. In order to achieve this goal, the photon recycling term is imported into the equations to connect the Shockley-Queisser theory and the classical diode theory. This model for excitonic and classical bipolar solar cells can describe the combined transport and interaction of electrons, holes and excitons. For high mobilities this model reproduces the Shockley Queisser efficiency limit. We show how varying the respective mobilities of the different species changes the operation mode of the solar cell path between excitonic and bipolar. Then, the effect of conduction band offset on transport will be described in this paper. Finally, validity of reciprocity theorem between quantum efficiency and electroluminescence in this model will be discussed.

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Authors and Affiliations

  1. School of Engineering Emerging Technologies, University of Tabriz, Tabriz, 51664, Iran

    Ali. Shahini & Karim. Abbasian

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  1. Ali. Shahini
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  2. Karim. Abbasian
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Correspondence to Ali. Shahini.

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Shahini, A., Abbasian, K. Charge carriers and excitons transport in an organic solar cell-theory and simulation. Electron. Mater. Lett. 8, 435–443 (2012). https://doi.org/10.1007/s13391-012-2021-2

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  • DOI: https://doi.org/10.1007/s13391-012-2021-2

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