DOI: https://doi.org/10.29363/nanoge.almips.2021.007
Publication date: 23rd September 2021
Metal halide perovskites are mixed electronic-ionic semiconductors with an extraordinary rich optoelectronic behavior and the capability to function very efficiently as active layers in solar cells, with a record efficiency surpassing 24 percent nowadays.
In this talk you are watching, I review recent work of our group in which we apply experimental protocols and drift-diffusion modeling to provide a consistent interpretation of the signals observed in the impedance spectrum. Based on that, I will present procedures to extract relevant information from the spectra, such us charge collection efficiencies, ideality factors and recombination mechanisms, ionic diffusion coefficient and ion vacancy concentrations.
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