Journal article
Inverted semi-transparent organic solar cells with spray coated, surfactant free polymer top-electrodes
A Colsmann, M Reinhard, TH Kwon, C Kayser, F Nickel, J Czolk, U Lemmer, N Clark, J Jasieniak, AB Holmes, D Jones
Solar Energy Materials and Solar Cells | Published : 2012
Abstract
Depositing a poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) buffer layer or top-electrode from aqueous solution on a non-polar active layer in inverted organic solar cells is commonly considered a very challenging task. In this work we utilize spray deposited PEDOT:PSS seeds to effectively reduce the surface free energy atop the active layer in poly-hexylthiophene polymer solar cells before applying a PEDOT:PSS top-electrode. Though aqueous PEDOT:PSS is repelled from non-polar surfaces, very small droplets can adhere to the surface. The distribution of the sprayed PEDOT:PSS droplets can be controlled via the substrate temperature and the material flow rate. The less time..
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Awarded by Foundation for Cardiovascular Research
Funding Acknowledgements
The authors would like to thank Shaun Howard (CSIRO) for providing the contact angle measurement setup. PEDOT:PSS Clevios PH1000 was supplied by Heraeus Clevios GmbH, Germany. We acknowledge the Federal Ministry of Education and Research (BMBF) and the AAS/ISL for funding of travel expenses under contracts AUS 10/019 and Mobility Call 2010-11, respectively. The ultrasonic spray deposition equipment was purchased within the project ARC LIEF (LE100100147). We further thank the Victorian government for funding VSA SPF to the Victorian Organic Solar Cell Consortium (VICOSC) and the CSIRO FMF funding under FCR Program.