The performance of perovskite solar cells is under direct control of the perovskite film quality and controlling the crystalinity and orientation of solution-processed perovskite film is a fundamental challenge. In this study, we present a scalable fabrication process for heteroepitaxial growth of mixed-cation hybrid perovskites (FA(1-x-y)MA(x)Cs(y))Pb(I1-xBrx)(3) in ambient atmospheric condition by using a Crystal Engineering (CE) approach. Smooth and mesoporous thin film of pure crystalline intermediate phase of PbX2 center dot 2DMSO is formed by deposition of supersaturated lead/cesium halides solution. Kinetically fast perovskite nucleation is achieved by rapid intercalation of formamidinium iodide (FAI) and methylammonium bromide (MABr) into the intermediate layer trough solvent assisted S(N)1 ligand exchange. Finally, heteroepitaxially perovskite growth is accomplished via Volmer-Weber crystal growth mechanism. All the layers are deposited under atmospheric condition (relative humidity (RH) 50-75%) with high reproducibility for various device and module dimensions. In particular, perovskite solar modules (Pmax similar to 550 mW) are successfully fabricated by blade coating under atmospheric condition. The CE approach remarkably improves the device performance by reaching a power conversion efficiency of 18.4% for small area (0.1 cm(2)), 16.5% on larger area (1 cm(2)) devices, and 12.7% and 11.6% for blade-coated modules with an active area of 17 and 50 cm(2), respectively. Non-encapsulated triple cation solar cells and modules show promising stability under atmospheric shelf life and light soaking conditions.

Yaghoobi Nia, N., Giordano, F., Zendehdel, M., Cina, L., Palma, A.l., Medaglia, P.g., et al. (2020). Solution-based heteroepitaxial growth of stable mixed cation/anion hybrid perovskite thin film under ambient condition via a scalable crystal engineering approach. NANO ENERGY, 69 [10.1016/j.nanoen.2019.104441].

Solution-based heteroepitaxial growth of stable mixed cation/anion hybrid perovskite thin film under ambient condition via a scalable crystal engineering approach

Yaghoobi Nia N.;Medaglia P. G.;
2020-01-01

Abstract

The performance of perovskite solar cells is under direct control of the perovskite film quality and controlling the crystalinity and orientation of solution-processed perovskite film is a fundamental challenge. In this study, we present a scalable fabrication process for heteroepitaxial growth of mixed-cation hybrid perovskites (FA(1-x-y)MA(x)Cs(y))Pb(I1-xBrx)(3) in ambient atmospheric condition by using a Crystal Engineering (CE) approach. Smooth and mesoporous thin film of pure crystalline intermediate phase of PbX2 center dot 2DMSO is formed by deposition of supersaturated lead/cesium halides solution. Kinetically fast perovskite nucleation is achieved by rapid intercalation of formamidinium iodide (FAI) and methylammonium bromide (MABr) into the intermediate layer trough solvent assisted S(N)1 ligand exchange. Finally, heteroepitaxially perovskite growth is accomplished via Volmer-Weber crystal growth mechanism. All the layers are deposited under atmospheric condition (relative humidity (RH) 50-75%) with high reproducibility for various device and module dimensions. In particular, perovskite solar modules (Pmax similar to 550 mW) are successfully fabricated by blade coating under atmospheric condition. The CE approach remarkably improves the device performance by reaching a power conversion efficiency of 18.4% for small area (0.1 cm(2)), 16.5% on larger area (1 cm(2)) devices, and 12.7% and 11.6% for blade-coated modules with an active area of 17 and 50 cm(2), respectively. Non-encapsulated triple cation solar cells and modules show promising stability under atmospheric shelf life and light soaking conditions.
2020
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/03 - FISICA DELLA MATERIA
English
Con Impact Factor ISI
Heteroepitaxy
Volmer-Weber
Crystallography
Blade-coating
Perovskite solar module
Light soaking
Yaghoobi Nia, N., Giordano, F., Zendehdel, M., Cina, L., Palma, A.l., Medaglia, P.g., et al. (2020). Solution-based heteroepitaxial growth of stable mixed cation/anion hybrid perovskite thin film under ambient condition via a scalable crystal engineering approach. NANO ENERGY, 69 [10.1016/j.nanoen.2019.104441].
Yaghoobi Nia, N; Giordano, F; Zendehdel, M; Cina, L; Palma, Al; Medaglia, Pg; Zakeeruddin, Sm; Gratzel, M; Di Carlo, A
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/322531
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