Design rules for selective deposition of silver by condensation coefficient modulation for application in organic photovoltaics Szymon Abrahamczyk 1 , Phillip Bellchambers 2 , Steven Huband 3 , Keun-Woo Park 4 , Jin-Kyun Lee 4 Ross Hatton 2* 1 AS CDT, Senate House, University of Warwick, UK, 2 Department of Chemistry, University of Warwick, UK, 3 Department of Physics, University of Warwick. UK, 4 Department of Polymer Science and Engineering, Inha University, South Korea Silver is the metal of choice for myriad current and emerging applications, including flexible transparent electrodes and as platforms for biological and chemical sensors for point-of-use healthcare and environmental monitoring. However, for many of these applications it is necessary to pattern silver films with micron to nanometre scale periodic features over macroscopic areas, which is a slow and costly process. In 2019 our group first reported a new approach to patterning silver films based on the discovery that an extremely thin printed layer of perfluorinated molecules can prevent condensation of silver vapour, so silver is only deposited where the perfluorinated layer is not. [1] The beauty of the approach is its simplicity, since vacuum evaporation of metals to form thin films is proven as a low-cost metal deposition method by the packaging industry. Moreover, the shape and dimensions of the features deposited is limited only by the printing method used to deposit the patterned perfluorinated layer. Using this highly unconventional approach to patterning silver, we have very recently reported the fabrication of high-performance transparent silver grid electrodes suitable for use in organic photovoltaic devices as a replacement for indium tin oxide coated glass. [2] This poster will present two new perfluorinated polymers for this application which are used to shed light on the factors that control selective condensation of silver at the molecular level. These new materials are also used to fabricate silver nanodisks, nanoapertures and high-performance silver grid electrodes for use as the transparent and light-catching plasmonic electrode in organic photovoltaic devices. References
1. Varagnolo et al. , Materials Horizons 7, 2020 , 143, https://doi.org/10.1039/C9MH00842J 2. Bellchambers et al. , Advanced Materials 2023 , https://doi.org/10.1002/adma.202300166
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© The Author(s), 2023
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