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Spray coated silver nanowires as transparent electrodes in OPVs for Building Integrated Photovoltaics applications.

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Bibliographic Details
Title: Spray coated silver nanowires as transparent electrodes in OPVs for Building Integrated Photovoltaics applications.
Authors: Ding, Z.1, Stoichkov, V.1, Horie, M.2, Brousseau, E.3, Kettle, J.1 j.kettle@bangor.ac.uk
Source: Solar Energy Materials & Solar Cells. Dec2016, Vol. 157, p305-311. 7p.
Subject Terms: *Solar cells, *Photovoltaic power generation, Nanowires, Silver nanoparticles, Electrodes
Abstract: The application of spray coated silver nanowires (AgNWs) onto OPVs for building Integrated Photovoltaics (BIPVs) is demonstrated. By using AgNWs with PEDOT:PSS, a transparent conductive layer was demonstrated on top of an P3HT:PCBM active layer with a sheet resistance of 30 Ω/⎕ for 90% transparency. This has been applied to two separate configurations; semi-transparent OPVs for solar glazing applications and OPVs onto an opaque substrate, namely steel. For the latter, a novel technique to planarise the steel substrate with an intermediate layer is also presented, with a substantial decrease in surface roughness reported to ensure that the substrate is smooth enough to use for OPV fabrication. The use of SU-8 as an intermediate layer reduced the surface roughness to R A =10 nm, which is one of the lowest values reported to date, and was achieved on a low cost substrate (DC01 low carbon steel) using solution processing. [ABSTRACT FROM AUTHOR]
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Database: GreenFILE
Description
Abstract:The application of spray coated silver nanowires (AgNWs) onto OPVs for building Integrated Photovoltaics (BIPVs) is demonstrated. By using AgNWs with PEDOT:PSS, a transparent conductive layer was demonstrated on top of an P3HT:PCBM active layer with a sheet resistance of 30 Ω/⎕ for 90% transparency. This has been applied to two separate configurations; semi-transparent OPVs for solar glazing applications and OPVs onto an opaque substrate, namely steel. For the latter, a novel technique to planarise the steel substrate with an intermediate layer is also presented, with a substantial decrease in surface roughness reported to ensure that the substrate is smooth enough to use for OPV fabrication. The use of SU-8 as an intermediate layer reduced the surface roughness to R A =10 nm, which is one of the lowest values reported to date, and was achieved on a low cost substrate (DC01 low carbon steel) using solution processing. [ABSTRACT FROM AUTHOR]
ISSN:09270248
DOI:10.1016/j.solmat.2016.05.053