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Article

Plasmon-Assisted Direction- and Polarization-Sensitive Organic Thin-Film Detector

1
PROFACTOR GmbH, Functional Surfaces and Nanostructures, 4407 Steyr-Gleink, Austria
2
Institute of Applied Physics, Johannes Kepler University, 4040 Linz, Austria
3
School of Medical Engineering and Applied Social Sciences, University of Applied Sciences Upper Austria, Garnisonstraße 21, 4020 Linz, Austria
4
Department of Physics, Chalmers University of Technology, 41296 Göteborg, Sweden
5
Linz Institute for Organic Solar Cells/Institute of Physical Chemistry, Johannes Kepler University, 4040 Linz, Austria
6
School of Physics and CRANN, Trinity College Dublin, Dublin, Ireland
*
Author to whom correspondence should be addressed.
Nanomaterials 2020, 10(9), 1866; https://doi.org/10.3390/nano10091866
Received: 18 August 2020 / Revised: 10 September 2020 / Accepted: 11 September 2020 / Published: 17 September 2020
(This article belongs to the Special Issue Nanoimprint Lithography Technology and Applications)
Utilizing Bragg surface plasmon polaritons (SPPs) on metal nanostructures for the use in optical devices has been intensively investigated in recent years. Here, we demonstrate the integration of nanostructured metal electrodes into an ITO-free thin film bulk heterojunction organic solar cell, by direct fabrication on a nanoimprinted substrate. The nanostructured device shows interesting optical and electrical behavior, depending on angle and polarization of incidence and the side of excitation. Remarkably, for incidence through the top electrode, a dependency on linear polarization and angle of incidence can be observed. We show that these peculiar characteristics can be attributed to the excitation of dispersive and non-dispersive Bragg SPPs on the metal–dielectric interface on the top electrode and compare it with incidence through the bottom electrode. Furthermore, the optical and electrical response can be controlled by the organic photoactive material, the nanostructures, the materials used for the electrodes and the epoxy encapsulation. Our device can be used as a detector, which generates a direct electrical readout and therefore enables the measuring of the angle of incidence of up to 60° or the linear polarization state of light, in a spectral region, which is determined by the active material. Our results could furthermore lead to novel organic Bragg SPP-based sensor for a number of applications. View Full-Text
Keywords: plasmons; Bragg SPPs; angle of incidence; nanoimprint lithography; grating; organic solar cell plasmons; Bragg SPPs; angle of incidence; nanoimprint lithography; grating; organic solar cell
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MDPI and ACS Style

Haslinger, M.J.; Sivun, D.; Pöhl, H.; Munkhbat, B.; Mühlberger, M.; Klar, T.A.; Scharber, M.C.; Hrelescu, C. Plasmon-Assisted Direction- and Polarization-Sensitive Organic Thin-Film Detector. Nanomaterials 2020, 10, 1866. https://doi.org/10.3390/nano10091866

AMA Style

Haslinger MJ, Sivun D, Pöhl H, Munkhbat B, Mühlberger M, Klar TA, Scharber MC, Hrelescu C. Plasmon-Assisted Direction- and Polarization-Sensitive Organic Thin-Film Detector. Nanomaterials. 2020; 10(9):1866. https://doi.org/10.3390/nano10091866

Chicago/Turabian Style

Haslinger, Michael J., Dmitry Sivun, Hannes Pöhl, Battulga Munkhbat, Michael Mühlberger, Thomas A. Klar, Markus C. Scharber, and Calin Hrelescu. 2020. "Plasmon-Assisted Direction- and Polarization-Sensitive Organic Thin-Film Detector" Nanomaterials 10, no. 9: 1866. https://doi.org/10.3390/nano10091866

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