Recent Advances in Developing High-Performance Electrodes for Inverted Configuration Organic Photovoltaics

Stelios Choulis^a

^aMolecular Electronics and Photonics Research Unit, Department of Mechanical Engineering and Materials Science and Engineering, Cyprus University of Technology, Cyprus

Materials for Sustainable Development Conference (MATSUS)
Proceedings of MATSUS Spring 2024 Conference (MATSUS24)

#MAPUP-OPV - Materials and Processes for the Scale-up of Organic Photovoltaics

Barcelona, Spain, 2024 March 4th - 8th

Organizers: Ignasi Burgués, Andreas Distler and Sergi Riera-Galindo

Invited Speaker, Stelios Choulis, presentation 163
DOI: https://doi.org/10.29363/nanoge.matsus.2024.163
Publication date: 18th December 2023

Inverted Organic Photovoltaics (OPVs) allowed more flexibility on designing the roll-to-roll (R2R) production process and thus provided technological opportunities to OPV technology [1,2]. In addition, inverted OPVs are exhibiting significantly longer lifetime performance compared to normal structure OPVs, another important parameter for OPV commercialization [3]. The presentation will cover recent advances in developing high-performance metal oxides carrier selective contacts and Indium-tin-oxide (ITO)-free electrodes for non-fullerene acceptors (NFA) based Inverted OPVs. High-performance NFA inverted OPVs incorporating solution processed metal oxide hole selective contact (HSC) providing similar PCE and light stability performance to that achieved with the commonly used thermally evaporated MoO₃HSC will be presented [4]. Furthermore, the presentation will highlight the systematic understanding of the relationship between doped metal-oxide and Ag nanowires (NWs) interfaces that allowed the development of Ag-NWs based bottom transparent electrodes for inverted configuration OPVs with simplified processing [5]. Finally, laser printed nanoparticle-based metal grids for the development of efficient ITO-free Inverted OPVs with up-scalability perspectives will also be presented [6].

References:

[1] C. Waldauf, M. Morana, P. Denk, P. Schilinsky, K. Coakley, S. A. Choulis, C. J, Brabec, Highly efficient inverted organic photovoltaics using solution-based titanium oxide as electron selective contact, Applied Physics Letters, 89, 23, 233517, 2006.

[2] R. Steim, S. A. Choulis, P. Schilinsky, C. J. Brabec, Interface modification for highly efficient organic photovoltaics, Applied Physics Letters, 92, 9, 093303, 2008.

[3] V. M. Drakonakis, A. Savva, M. Kokonou, S. A. Choulis, Investigating electrodes degradation in organic photovoltaics through reverse engineering under accelerated humidity lifetime conditions, Solar Energy Materials and Solar Cells,130, 544-550, 2014.

[4] A. Ioakeimidis, A. Hauser, , M. Rossier, F. Linardi, S. A. Choulis,High-performance non-fullerene acceptor inverted organic photovoltaics incorporating solution processed doped metal oxide hole selective contact, Applied Physics Letters 120 (23), 233301, 2022.

[5] E. Georgiou, A. Ioakeimidis, I. Antoniou, I. T. Papadas, Alina Hauser, Michael Rossier, Flavio Linardi, Stelios. A. Choulis, Silver Nanowires/Metal-Oxide based Transparent Electrode for High Performance Non-Fullerene Acceptor ITO-free Inverted Organic Photovoltaics,ACS Applied Electronic Materials, 5, 1, 181–188, 2023.

[6] S. M. Pozov, K. Andritsos, I. Theodorakos, E. Georgiou, A. Ioakeimidis, A. Kabla, S. Melamed, F. de la Vega, I. Zergioti and S. A. Choulis, Highly Efficient Indium Tin Oxide-Free Inverted Organic Photovoltaics using Laser Induced Forward Transfer Silver Nanoparticle Embedded Metal Grids, ACS Applied Electronic Materials, 4, 6, 2689–2698, 2022.

Acknowledgements:

This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 862474, project RoLA-FLEX.

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