Dielectric Effect on the Photovoltage Loss in Organic Photovoltaic Cells

The VOC loss in several polymer–fullerene solar cells is determined. Based on these data, a major source of photovoltage loss is attributed to the low dielectric constants of the polymers. Such loss is close to zero if the dielectric constant of the polymer–fullerene blend is close to 5.

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2014-09, Vol.26 (35), p.6125-6131
Main Authors: Chen, Song, Tsang, Sai-Wing, Lai, Tzung-Han, Reynolds, John R., So, Franky
Format: Article
Language:English
Subjects:
Blends
dielectric
Dielectric constant
Dielectrics
effecive bandgap
electroabsorption
open-circuit voltage
organic
Photovoltages
Photovoltaic cells
Polymers
solar
Solar cells
Volatile organic compounds
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Summary:The VOC loss in several polymer–fullerene solar cells is determined. Based on these data, a major source of photovoltage loss is attributed to the low dielectric constants of the polymers. Such loss is close to zero if the dielectric constant of the polymer–fullerene blend is close to 5.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201401987