@article{a648fe3d115e4e5c8afa07a17158485b,
title = "Improved stability of non-ITO stacked electrodes for large area flexible organic solar cells",
abstract = "We present ITO-free rigid and flexible monolithic organic solar cells with an active area of 25 cm2. The devices employ a transparent insulator/metal/insulator anode consisting of a molybdenum oxide/silver/zinc sulfide stack that had a peak transmittance of 80% and a sheet resistance of 3.6/□. Neutron reflectometry showed that zinc sulfide formed a more stable capping layer at the air interface than molybdenum oxide. It was found that blade coating could be used to form good quality large area films on both rigid (glass) and flexible [poly(ethylene terephthalate)] substrates with much reduced material consumption. Cells with an active layer comprised of a blend of poly[N-9″-heptadecanyl-2,7-carbazole-alt-5,5-(4′, 7′-di-2-thienyl-2′,1′,3′-benzothiadiazole)] (PCDTBT) and [6,6]-phenyl-C71-butyric acid methyl ester (PC70BM) gave a power conversion efficiency of 2.7%, which was 40% higher than a standard ITO-based device. No loss in efficiency was observed when a flexible substrate was used.",
keywords = "Blade coating, Neutron reflectometry, Organic photovoltaics, Organic semiconductors",
author = "Mike Hambsch and Hui Jin and Clulow, {Andrew J.} and Andrew Nelson and Yamada, {Norifumi L.} and Marappan Velusamy and Qingyi Yang and ZHU, {Fu Rong} and Burn, {Paul L.} and Gentle, {Ian R.} and Paul Meredith",
note = "Funding Information: This work has been supported in part by the Australian Research Council ( DP1211572 ). We acknowledge funding from the University of Queensland (Strategic Initiative – Centre for Organic Photonics & Electronics) and the Queensland Government (National and International Research Alliances Program). This work was performed in part at the Queensland node of the Australian National Fabrication Facility (ANFF) – a company established under the National Collaborative Research Infrastructure Strategy to provide nano and microfabrication facilities for Australia׳s researchers. The initial neutron reflectivity experiments were approved by the Neutron Science Proposal Review Committee of J-PARC/MLF (Proposal no. 2012B0200) and supported by the Inter-University Research Program on Neutron Scattering of IMSS , KEK. We also acknowledge the support of the Bragg Institute, the Australian Nuclear Science and Technology Organisation (ANSTO) and the Australian Institute for Nuclear Science and Engineering (AINSE) for providing the neutron research facilities used in the second round of reflectivity experiments. The authors would like to thank Jake McEwan for helping with the neutron reflectometry measurements and Dr. G.C. Schmidt for supplying the PET substrates. This Program has also been supported by the Australian Government through the Australian Renewable Energy Agency (ARENA). Responsibility for the views, information, or advice expressed herein is not accepted by the Australian Government. ",
year = "2014",
month = nov,
doi = "10.1016/j.solmat.2014.06.032",
language = "English",
volume = "130",
pages = "182--190",
journal = "Solar Energy Materials and Solar Cells",
issn = "0927-0248",
publisher = "Elsevier BV",
}
