Plasmon-assisted direction-and polarization-sensitive organic thin-film detector
Artikel i vetenskaplig tidskrift, 2020

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.

Angle of incidence

Bragg SPPs



Organic solar cell

Nanoimprint lithography


Michael J. Haslinger

Johannes Kepler Universität Linz (JKU)

Profactor GmbH

Dmitry Sivun

Johannes Kepler Universität Linz (JKU)

University of Applied Sciences Upper Austria

Hannes Pöhl

Johannes Kepler Universität Linz (JKU)

Battulga Munkhbat

Chalmers, Fysik, Bionanofotonik

Johannes Kepler Universität Linz (JKU)

Michael Mühlberger

Profactor GmbH

Thomas A. Klar

Johannes Kepler Universität Linz (JKU)

Markus C. Scharber

Johannes Kepler Universität Linz (JKU)

Calin Hrelescu

Trinity College Dublin

Johannes Kepler Universität Linz (JKU)


20794991 (eISSN)

Vol. 10 9 1-18 1866


Atom- och molekylfysik och optik

Annan fysik

Den kondenserade materiens fysik





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