Proceedings of Materials for Sustainable Development Conference (MAT-SUS) (NFM22)
DOI: https://doi.org/10.29363/nanoge.nfm.2022.299
Publication date: 11th July 2022
In this study, we present interface modification of lead halide perovskite solar cells in normal configuration by means of deposition of functionalized Mxene (Ti3C2) nanosheets. H3PP ligand as used as functionalizing and passivation agent molecule at the interface of perovskite-Spiro OMeTAD layers. MXene nanosheets were prepared by delamination of MXene bulk powers with a novel method then dispersed in a pre-dissolved H3pp (0.5 mg/ml) solution. JV measurements showed a PCE of 20.03% for modified device while the reference device PCE was 19.63%. Impedance Spectroscopy analyses and Mott-Schottky analysis revealed the increase of recombination resistance and reduction of trap state densities, respectively, for modified device. Stability studies by means of MPP tracking under N2 atmosphere for 1000 h showed enhanced stability for devices modified by pure MXene nanosheets and H3PP modified MXene nanosheets devices. In addition to that, MPP tracking of encapsulated devices under outdoor conditions showed clear indication of higher stability in performance of H3PP/Mxene modified devices.In this study, we present interface modification of lead halide perovskite solar cells in normal configuration by means of deposition of functionalized Mxene (Ti3C2) nanosheets. H3PP ligand as used as functionalizing and passivation agent molecule at the interface of perovskite-Spiro OMeTAD layers. MXene nanosheets were prepared by delamination of MXene bulk powers with a novel method then dispersed in a pre-dissolved H3pp (0.5 mg/ml) solution. JV measurements showed a PCE of 20.03% for modified device while the reference device PCE was 19.63%. Impedance Spectroscopy analyses and Mott-Schottky analysis revealed the increase of recombination resistance and reduction of trap state densities, respectively, for modified device. Stability studies by means of MPP tracking under N2 atmosphere for 1000 h showed enhanced stability for devices modified by pure MXene nanosheets and H3PP modified MXene nanosheets devices. In addition to that, MPP tracking of encapsulated devices under outdoor conditions showed clear indication of higher stability in performance of H3PP/Mxene modified devices.
We give thanks to the Spanish State Research Agency for the grant Self-Power (PID2019-104272RB-C54 / AEI / 10.13039/501100011033). This work is part of the project PCI2020-112185, granted by MCIN/AEI/10.13039/501100011033 y and the European Union “NextGenerationEU”/PRTR. To the OrgEnergy Excelence Network (CTQ2016-81911- REDT), to the Agencia de Gestio´ d’Ajuts Universitaris i de Recerca (AGAUR) for the support to the consolidated Catalonia research group 2017 SGR 329 and the Xarxa d’R+D+I Energy for Society (XRE4S). Part of this work is under Materials Science Ph.D. Degree for F:B., A.P. and K.T. of the Universitat Autonoma de Barcelona (UAB, Spain). We thank CONACYT for the scholarship to C.P. ICN2 is supported by the Severo Ochoa program from Spanish MINECO (grant no. SEV-2017-0706) and is funded by the CERCA Programme/Generalitat de Catalunya.. We thank the Spanish MINECO through the Severo Ochoa Centers of Excellence Program under grant no. SEV-2017-0706 for the postdoctoral contract to M.K.
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