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Ultrathin transparent Au electrodes for organic photovoltaics fabricated using a mixed mono-molecular nucleation layer
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Stec, Helena M., Williams, Rebecca J., Jones, T. S. (Tim S.) and Hatton, Ross A. (2011) Ultrathin transparent Au electrodes for organic photovoltaics fabricated using a mixed mono-molecular nucleation layer. Advanced Functional Materials, Vol.21 (No.9). pp. 1709-1716. doi:10.1002/adfm.201002021
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Official URL: http://dx.doi.org/10.1002/adfm.201002021
Abstract
A rapid, solvent free method for the fabrication of highly transparent ultrathin (similar to 8 nm) Au films on glass has been developed. This is achieved by derivatizing the glass surface with a mixed monolayer of 3-mercaptopropyl(trimethoxysilane) and 3-aminopropyl(trimethoxysilane) via co-deposition from the vapor phase, prior to Au deposition by thermal evaporation. The mixed monolayer modifies the growth kinetics, producing highly conductive films (similar to 11 Omega per square) with a remarkably low root-mean-square roughness (similar to 0.4 nm) that are exceptionally robust towards UV/O(3) treatment and ultrasonic agitation in a range of common solvents. As such, they are potentially widely applicable for a variety of large area applications, particularly where stable, chemically well-defined, ultrasmooth substrate electrodes are required, such as in organic optoelectronics and the emerging fields of nanoelectronics and nanophotonics. By integrating microsphere lithography into the fabrication process, we also demonstrate a means of tuning the transparency by incorporating a random array of circular apertures into the film. The application of these nanostructured Au electrodes is demonstrated in efficient organic photovoltaic devices where it offers a compelling alternative to indium tin oxide coated glass.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QD Chemistry | ||||
| Divisions: | Faculty of Science > Chemistry | ||||
| Journal or Publication Title: | Advanced Functional Materials | ||||
| Publisher: | Wiley - V C H Verlag GmbH & Co. KGaA | ||||
| ISSN: | 1616-301X | ||||
| Official Date: | 10 May 2011 | ||||
| Dates: |
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| Volume: | Vol.21 | ||||
| Number: | No.9 | ||||
| Page Range: | pp. 1709-1716 | ||||
| DOI: | 10.1002/adfm.201002021 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC), European Regional Development Agency/Advantage West Midlands Science City Materials Initiative, Royal Academy of Engineering/EPSRC | ||||
| Grant number: | 2 (European Regional Development Agency/Advantage West Midlands Science City Materials Initiative) |
Data sourced from Thomson Reuters' Web of Knowledge
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