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Materials 2012, 5(10), 1933-1953; doi:10.3390/ma5101933

Guidelines for the Bandgap Combinations and Absorption Windows for Organic Tandem and Triple-Junction Solar Cells

Faculty of Applied Engineering Sciences, University College Ghent—Ghent University, Valentin Vaerwyckweg 1, Gent B-9000, Belgium
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Received: 23 August 2012 / Revised: 8 October 2012 / Accepted: 16 October 2012 / Published: 22 October 2012
(This article belongs to the Special Issue Photovoltaic Materials 2012)
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Abstract

Organic solar cells have narrow absorption windows, compared to the absorption band of inorganic semiconductors. A possible way to capture a wider band of the solar spectrum—and thus increasing the power conversion efficiency—is using more solar cells with different bandgaps in a row, i.e., a multi-junction solar cell. We calculate the ideal material characteristics (bandgap combinations and absorption windows) for an organic tandem and triple-junction solar cell, as well as their acceptable range. In this way, we give guidelines to organic material designers.
Keywords: organic solar cells; modeling; tandem solar cells; triple-junction solar cells; multi-junction solar cells; power conversion efficiency; bandgap; absorption window organic solar cells; modeling; tandem solar cells; triple-junction solar cells; multi-junction solar cells; power conversion efficiency; bandgap; absorption window
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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Minnaert, B.; Veelaert, P. Guidelines for the Bandgap Combinations and Absorption Windows for Organic Tandem and Triple-Junction Solar Cells. Materials 2012, 5, 1933-1953.

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