Two-Step Thermal Annealing: An Effective Route for 15 % Efficient Quasi-2D Perovskite Solar Cells
Low-dimensional perovskites (LDP) are nowadays recognized as promising materials for the realization of highly performing photovoltaic cells. However, issues related to film morphology, composition, crystal quality and material homogeneity limit the device performances and reproducibility. In this work, we implement a robust method for the deposition of a LDP mixing methylammonium (MA) and phenylethylammonium (PEA) cations to create the mixed system (PEA)(2)MA(39)Pb(40)I(121) by using a two-step thermal annealing treatment (at 60 and 100 degrees C). Our approach results in LDP films with high crystal quality and enhanced carrier lifetime, which double the power conversion efficiency of reference devices, reaching up to 15 %.
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Romano, V., Najafi, L., Sutanto, A. A., Schileo, G., Queloz, V., Bellani, S., Prato, M., Marras, S., Nazeeruddin, M. K., D’Angelo, G., Bonaccorso, F., & Grancini, G. (2021). Two-Step Thermal Annealing: An Effective Route for 15 % Efficient Quasi-2D Perovskite Solar Cells. Chempluschem, 86(8), 1044–1048. https://doi.org/10.1002/cplu.202000777
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WOS:000625776200001
2021-03-05
86
8
1044
1048
REVIEWED
EPFL