Heterojunction Organic Photovoltaic Cells as Molecular Heat Engines: A Simple Model for the Performance Analysis

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Author list: Einax M, Dierl M, Nitzan A

Publisher: American Chemical Society

Place: WASHINGTON

Publication year: 2011

Journal: Journal of Physical Chemistry C (1932-7447)

Journal acronym: J PHYS CHEM C

Volume number: 115

Issue number: 43

Start page: 21396

End page: 21401

Number of pages: 6

ISSN: 1932-7447

eISSN: 1932-7455

Languages: English-Great Britain (EN-GB)

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Abstract

Organic heterojunction solar cells are analyzed within a minimal model that includes the essential physical features of such systems. The dynamical properties of this model, calculated using a master equation approach, account for the qualitative behavior of such systems. The model yields explicit results for current-voltage behavior as well as performance characteristics expressed in terms of the thermodynamic efficiency as well as the power conversion efficiency at maximum power, making it possible to evaluate the optimal setup for this device model.

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