Slot-die coated methylammonium-free perovskite solar cells with 18% efficiency

• Published in: Solar energy materials and solar cells Vol. 230; p. 111189
• Main Authors: Fievez, Mathilde, Singh Rana, Prem Jyoti, Koh, Teck Ming, Manceau, Matthieu, Lew, Jia Haur, Jamaludin, Nur Fadilah, Ghosh, Biplab, Bruno, Annalisa, Cros, Stéphane, Berson, Solenn, Mhaisalkar, Subodh G., Leong, Wei Lin
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15.09.2021; Elsevier BV
• Subjects: Coatings; Commercialization; Crystallization; Energy conversion efficiency; Fabrication; Gas quenching; Hybrid metal halide perovskite; Large-area deposition; Methylammonium-free perovskite; Perovskite solar cells; Perovskites; Photovoltaic cells; Photovoltaics; Slot dies; Slot-die coating; Solar cells; Substrates; Synergistic gas quenching; Tin dioxide; Titanium dioxide; Synergistic gas quenching; Methylammonium-free perovskite; Slot-die coating; Large-area deposition; Hybrid metal halide perovskite; Perovskite solar cells
• ISSN: 0927-0248; 1879-3398
• DOI: 10.1016/j.solmat.2021.111189

One of the major bottlenecks of perovskite photovoltaic modules fabrication is the homogeneous deposition of perovskite material on large-area substrates. Here, we show that slot-die coating technique combined with synergistic gas quenching and substrate heating can produce compact, homogenous and reproducible Cs0.16FA0.84Pb(I0·88Br0.12)3 perovskite films. We demonstrate the fabrication of perovskite solar cells (PSCs) in a planar (n-i-p) device configuration and attain power conversion efficiency (PCE) of 18% over 0.09 cm2 device active area. The versatility of this crystallization strategy, which eliminates the need for complex solvents or additive engineering, was studied using planar SnO2- and TiO2-coated FTO substrates. Our study provides greater insights into achieving controlled coating and homogeneous crystallization of perovskite films over large-area substrates (~10 × 10 cm2) necessary for the commercialization of this technology. •We report the slot-die coating of methylammonium free perovskite layers via synergistic gas quenching over large areas.•The perovskite films were deposited homogeneously over 100 cm2 substrates.•30 devices were fabricated from the same substrate and the power conversion efficiency showed reproducibility, with an average of 16.35 ± 2%.•The unencapsulated devices exhibited a T80 of 700 h.