Additive Engineering in Halide Perovskite/MXene Perovskite Solar Cells
Monica Lira a
a Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, Barcelona, Catalonia, 08193, Spain
Invited Speaker, Monica Lira, presentation 139
Publication date: 6th February 2024

MXene have been applied in Perovskite solar cells (PSCs) demonstrating the improvement of their power conversion efficiency. However, device stability studies are still missing. Especially under real outdoor conditions where devices are subjected to the synergy of multiple stressors. In this work, additive engineering has been applied to 2D Ti3C2 MXene and applied in normal PSCs configuration. The MXene was applied at the interface between the halide perovskite and the hole transport layer. The functionalization of the Ti3C2 MXene was made utilizing the same organic additive passivating the halide perovskite layer. Our functionalizing strategy creates a continuous link between the MXene and the halide perovskite layer to obtain MXene-based PSCs with a ~22 % power conversion efficiency, in comparison with the control device showing 20.56 %. Stability analyses under different conditions (dark, continuous light irradiation and real outdoor analysis) reveal that the enhancement of the PSCs lifespan is always observed when the MXene layer is employed. To our knowledge, this is the first report of the stability analysis of MXene-based PSCs carried out under real outdoor (ISOS-O) conditions.

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