Monochromatic versus solar efficiencies of organic solar cells |
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Authors: | J rn Rostalski,Dieter Meissner |
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Affiliation: | a Forschungszentrum Juelich GmbH, IWV-3, D-52425 Juelich, Germany;b AQR, Wendelinusstr. 85, D-52428 Juelich, Germany |
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Abstract: | The photovoltaic behavior in a perylene/phthalocyanine hetero-p/n-junction solar cell was investigated using intensity-dependent I/V-characteristics and short circuit photocurrent spectroscopy. It is concluded that the charge carrier generation occurs only in a very thin active region at the contact. By optimizing the light trapping, a maximum solar AM 1.5 efficiency of about 2% can be obtained. A further increase requires better material properties or new cell structures. |
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Keywords: | Molecular organic solar cells Photovoltaics Organic semiconductors Photocurrent spectroscopy Equivalent circuit |
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