Plasmonic metal electrodes with sub-wavelength nanofeatures fabricated by condensation coefficient modulation: Light trapping electrodes for organic photovoltaics?
Szymon Abrahamczyk a, Philip Bellchambers b, Ross Hatton b, Keun-Woo Park c, Jin-Kyun Lee c
a AS CDT, Senate House, University of Warwick, CV4 7AL, Coventry, United Kingdom
b Department of Chemistry, University of Warwick, CV4 7AL, Coventry, United Kingdom.
c Department of Polymer Science and Engineering, Inha University, Incheon 22212, South Korea.
International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV22)
València, Spain, 2022 May 19th - 25th
Organizers: Pablo Docampo, Eva Unger and Elizabeth Gibson
Poster, Szymon Abrahamczyk, 257
Publication date: 20th April 2022

Patterned silver nanostructures such as nanowires, nanoparticles and films patterned with periodic arrays of apertures are of a great interest for a range of applications due to fast progressing miniaturisation of technology and increased interest in cost-effective and off-grid, portable, wearable, and flexible devices. For application in organic photovoltaics (OPVs) silver films patterned with a periodic array of sub-wavelength apertures are of interest as plasmon-active light trapping electrodes.1,2 However, current industrial methods for the fabrication of such structures over the large areas needed for practical application in OPVs are too costly to be economically viable and often involve the use of thick layers of photoresists and/or toxic metal etchants. Here we apply a new, potentially very low-cost method for the fabrication of light-catching silver electrodes based on the condensation coefficient modulation; a method recently developed by our group.3,4 We show that the key to achieving such highly selective silver deposition is the use of perfluorinated polymethacrylate film deposited by micro-contact printing. The performance of these electrodes as both the reflective and transparent electrodes will be reported.

SA thanks the University of Warwick for a PhD studentship through the Warwick Centre for Doctoral Training in Analytical Science.

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