Journal
ORGANIC ELECTRONICS
Volume 10, Issue 6, Pages 1091-1096Publisher
ELSEVIER
DOI: 10.1016/j.orgel.2009.05.021
Keywords
Organic photovoltaic; Partitioned cells; Hole extraction layer; Series resistance; Bulk heterojunction
Funding
- KIST RD program
- Korea Science and Engineering Foundation (KOSEF) [R01-2006-00010087-0]
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Lateral partitioning of hole extraction layer with insulating walls improved the power conversion efficiency of organic photovoltaic device. When the conductivity of the hole extraction layer is low, no improvement is obtained by partitioning. However, when the conductivity is high, a significant improvement was obtained in the partitioned cells, showing the estimated power conversion efficiency of 4.58% compared to the 3.54% of the single cell structure. This improvement, carefully corrected by masking at measurement, could be explained by the reduction of series resistance. Although accurate estimation of device area at partitioned device might be difficult, its effectiveness on the properties of large area organic photovoltaic device is clear, as shown in the result of 1 cm(2)-size cell with the same manner. (C) 2009 Elsevier B.V. All rights reserved.
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