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Description
This study explores the application of cold atmospheric pressure plasmas (CAPPs) for surface engineering of transparent conductive oxide (TCO) electrodes (ITO and FTO) in organic photovoltaics (OPVs). Optimizing the TCO/electron transport layer interface i s crucial for efficient charge transfer in OPVs. CAPP treatment offers a promising route to enhance TCO work function, and this work investigates the mechanisms involved. Various CAPP physical regimes (filamentary vs Townsend) and treatment parameters are applied to ITO and FTO surfaces on glass substrates. The resulting surface charges and work function modifications are analysed conductive AFM, alongside evaluations of chemical changes (XPS), hydrophilicity, and surface roughness. The influence of TCO conductivity on discharge behaviour is also examined. This comprehensive analysis aims to provide insights for optimizing OPV device performance by tailoring TCO surface properties.
