Suppressing series resistance in organic solar cells by oxygen plasma treatment
- 9 June 2008
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 92 (23), 233302
- https://doi.org/10.1063/1.2940236
Abstract
We demonstrate a low series resistance contact of gold (anode)/zinc-phthalocyznine in a reverse organic photovoltaic device aided by oxygen plasma treatment. The power conversion efficiency appreciated from 0.2% to 2.13%, post plasma treatment, predominantly due to the reduction in the series resistance of the device. A depth profile of zinc from x-ray photoelectron spectroscopy study revealed a gold layer with graded zinc composition, instead of pure gold, to be an efficient hole-collector from the organic interface. The zinc alloying of the gold layer has clearly been promoted by the oxygen plasma treatment.
Keywords
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