Circuital Model Validation for S-Shaped Organic Solar Cells by Means of Impedance Spectroscopy

Organic solar cells (OSCs) based on Poly[N-9'-heptadecanyl-2,7-carbazole-alt-5, 5-(4', 7'-di-2-thienyl-2',1',3'-benzothiadiazole)] (PCDTBT):1-(3-methoxycarbonyl)-propyl-1-1-phenyl-(6,6) C61 (PCBM) have been electrically dc and ac characterized. Device structure is ITO/P...

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Bibliographic Details
Published in:IEEE journal of photovoltaics 2015-01, Vol.5 (1), p.234-237
Main Authors: Romero, B., del Pozo, G., Arredondo, B., Reinhardt, J. P., Sessler, M., Wurfel, U.
Format: Article
Language:English
Subjects:
Circuit modeling
Impedance
impedance spectroscopy (IS)
Integrated circuit modeling
organic solar cells (OSCs)
Photovoltaic cells
Polymers
Resistance
S-shape
Solar energy
Spectroscopy
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Summary:Organic solar cells (OSCs) based on Poly[N-9'-heptadecanyl-2,7-carbazole-alt-5, 5-(4', 7'-di-2-thienyl-2',1',3'-benzothiadiazole)] (PCDTBT):1-(3-methoxycarbonyl)-propyl-1-1-phenyl-(6,6) C61 (PCBM) have been electrically dc and ac characterized. Device structure is ITO/Poly(3,4-ethylenedioxy-wthiophene)-poly(4-styrene sulfonate) (PEDOT:PSS)/PCDTBT:PCBM/C60MA/Al. Devices show the so-called S-shaped current-voltage curve that has been modeled with a circuit including two diodes in forward and reverse bias. Impedance measurements show one semicircle at low bias ( V
ISSN:2156-3381
2156-3403
DOI:10.1109/JPHOTOV.2014.2362978