Simultaneous enhanced efficiency and photostability in indoor organic solar cells by cathode interface engineering strategy

Alfonsina Abat Amelenan Torimtubun^a, José G. Sanchez^b, Josep Pallarès^a, Lluis F. Marsal^a

^aDepartment of Electronic, Electric and Automatic Engineering, Universitat Rovira I Virgili, 43007 Tarragona, Spain

^bInstitute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Av. Països Catalans 16, E-43007 Tarragona, Spain

Materials for Sustainable Development Conference (MATSUS)
Proceedings of nanoGe Spring Meeting 2022 (NSM22)

#StEffOPV22. Novel concepts for highly stable and efficient organic solar cells

Online, Spain, 2022 March 7th - 11th

Organizers: Vida Engmann, Morten Madsen and Jeff Kettle

Contributed talk, Alfonsina Abat Amelenan Torimtubun, presentation 204
DOI: https://doi.org/10.29363/nanoge.nsm.2022.204
Publication date: 7th February 2022

Organic solar cells (OSCs) have lately received a lot of interest as power sources to drive low power consumption devices for the Internet of Things application by harvesting the energy from indoor artificial light.[1,2] In this work, an enhanced power conversion efficiency (PCE) in indoor LED illuminated OSCs was observed, 60% higher than those of AM1.5 G illuminated OSCs by a cathode interface engineering strategy. Moreover, the photostability study under indoor artificial light, which is rarely investigated, is critical for the practical applications of this emerging technology. Along with the performance enhancement, we observed that OSCs illuminated under indoor LED light had better photostability than OSCs illuminated under 1 Sun scenario. Impedance analysis with the 3RC equivalent circuit models elucidates the mechanisms behind the enhanced performance and improved photostability of indoor OSCs.

References:

[1] Torimtubun, A. A. A.; Sánchez, J. G.; Pallarès, J.; Marsal, L. F. A cathode interface engineering approach for the comprehensive study of indoor performance enhancement in organic photovoltaics. Sustainable Energy Fuels. 2020, 4, 3378-3387.

[2] Torimtubun, A. A. A.; Sánchez, J. G.; Pallarès, J.; Marsal, L. F. Photostability study of inverted polymer solar cells under AM 1.5G and LED illumination via impedance spectroscopy, IEEE J. Electron Devices Soc., 2021, 9, 484-491.

Acknowledgements:

The work of Alfonsina A. A. Torimtubun was financially supported by the European Union's Horizon 2020 research and innovation program under the Marie Skłodowska-Curie grant agreement No. 713679. This work was partially supported by the Spanish Ministerio de Ciencia, Innovaci´on y Universidades (MICINN/FEDER) RTI2018-094040-B-I00, by the Agency for Management of University and Research Grants (AGAUR) ref. 2017-SGR-1527, Diputació de Tarragona 2021CM14 and from the Catalan Institution for Research and Advanced Studies (ICREA) under the ICREA Academia Award.

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