Molecular Approaches to Energy Conversion
Emilio Palomares a
a ICIQ-BIST. Avda. Països Catalans, 16. Tarragona. E-43007. Spain
International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV22)
València, Spain, 2022 May 19th - 25th
Organizers: Pablo Docampo, Eva Unger and Elizabeth Gibson
Invited Speaker, Emilio Palomares, presentation 158
Publication date: 20th April 2022

During my lecture I will present our latest results1,2 on the characterization of different type of solar cells from DSSC and OPV to MAPI using advanced photo-induced time resolved techniques. Using PICE (Photo-induced charge extraction), PIT-PV (Photo-induced Transient PhotoVoltage) and other techniques, we have been able to distinguish between capacitive electronic charge, and a larger amount of charge due to the intrinsic properties of the perovskite material. Moreover, the results allow us to compare different materials, used as hole transport materials (HTM), and the relationship between their HOMO and LUMO energy levels, the solar cell efficiency and the charge losses due to interfacial charge recombination processes occurring at the device under illumination. These techniques and the measurements carried out are key to understand the device function and improve further the efficiency and stability on perovskite MAPI based solar cells.





J. Jímenez-López, BDM Pusher, Dirk M. Guldi, E. Palomares. J. Am. Chem. Soc. 142 (3) 1236. 2020.

E. Yalcin, M. can, C. Rodríguz-Seco, E. Aktas, R. Pudi, W. Cambararu, S. Demiç, E. Palomares. Energ. Environ. Sci., 12, 1 230-237, 2019



Figure 1.  Measured charge in complete devices (left) using PIDC (Photo Induced Differential Charging) and the measured PIT-PV (Photo Induced Transient Photovoltage) decays for two solar cells with different TiO2/MAPI interface.

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