Pyrrolidinium induced templated growth of 1D-3D halide perovskite heterostructure for solar cell applications

Stability issues of perovskites have narrowed down their possibility of taking over photovoltaic market. In this scenario, we have introduced 1D-pyrrolidinium lead iodide (PyPbI3) into 3D-Methylammonium lead iodide (MAPbI3) perovskite under open atmosphere. Our studies showed the incorporation of py...

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Veröffentlicht in:Materials chemistry and physics 2023-07, Vol.303, p.127668, Article 127668
Hauptverfasser: Rao, Maithili K., Selvakumar, M., Mahesha, M.G., Paramasivam, Selvaraj, Dileep K, Reshma, Prabhu, Nimitha S., Veerappan, Ganapathy, Senthilkumar, S., Kamath, Sudha D.
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Sprache:eng
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Zusammenfassung:Stability issues of perovskites have narrowed down their possibility of taking over photovoltaic market. In this scenario, we have introduced 1D-pyrrolidinium lead iodide (PyPbI3) into 3D-Methylammonium lead iodide (MAPbI3) perovskite under open atmosphere. Our studies showed the incorporation of pyrrolidinium ion into 3D lattice unit and also the favourable assembly of 1D perovskite throughout 3D perovskite structure. We confirm the formation of 1D-3D hybrid halide structure by X-ray diffraction (XRD) patterns and High Resolution-Transmission Electron Microscopy (HR-TEM). The optical and surface morphology studies affirmed the changes in band gap and considerable improvement in grain size by PyI addition. X-ray Photoelectron reveals the bonding between pyrrolidinium ion and lead iodide in 1D-3D hybrid halide structure, which results in the reduced oxygen adsorption and increased moisture stability of the films. The reduced wettability is confirmed by contact angle meter study. Overall, the films were stable in open atmosphere for approximately a month. Importantly, incorporation of 1D perovskite helps to release the tensile strain within the thin film. We were able to successfully fabricate the solar cells of them and the highest efficiency of 7.5% was obtained for 10 mol % PyI perovskite. [Display omitted] •Pyrrolidine hydroiodide based 1D-3D multidimensional hybrid halide perovskite was synthesized in open atmosphere.•Among the different amount of Pyrrolidinium iodide added, 10 mol % PyI showed the best optical and structural properties.•The 10 mol % PyI sample displayed contact angle measurement of 76.6° in comparison to 63.1° shown by MAPbI3.•Thermogravimetric studies indicated the increase in the initial decomposition temperature of 10 mol % PyI.•10 mol% PyI film was stable in open atmosphere for a month and device showed the highest efficiency of 7.5% with 0.84Voc.
ISSN:0254-0584
1879-3312
DOI:10.1016/j.matchemphys.2023.127668