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Light Confinement in Corrugated Organic Solar Cells Organic solar cells are concerning their production costs, scalability to industrial fabrication and their versatility in terms of application advantageous when compared to their inorganic counterparts. On the other hand, they still suffer in terms of a significantly lowered performance. More precisely, the power conversion efficiency (PCE) is one of the key parameters that is heavily influenced by the selected donor and acceptor materials as well as the nano-morphology at the interface between layers forming the solar cell device. Several methods have been suggested to enhance the PCE, however the drawback is the use of non-commercially available materials and non-scalable expensive fabrication methods. Alternatively, an efficient approach consists of confining the incident light into the photoactive layer, aiming at elongating the optical path of light in the photoactive layer. This measure results in an increased number of scatter events, the occurrence of waveguides and plasmonic excitations upon the introduction of either nano-particles dispersed in the device layers and/or corrugated electrodes. The experimental results of such approach will be discussed with special emphasis given to corrugated electrodes, paving the way for a better understanding of light confinement in organic thin film devices. |