One-Year stable perovskite solar cells by 2D/3D interface engineering

G. Grancini, C. Roldán-Carmona, I. Zimmermann, E. Mosconi, X. Lee, D. Martineau, S. Narbey, Florian Oswald, F. De Angelis, M. Graetzel and Mohammad Khaja Nazeeruddin ()
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G. Grancini: Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne
C. Roldán-Carmona: Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne
I. Zimmermann: Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne
E. Mosconi: Computational Laboratory for Hybrid/Organic Photovoltaics (CLHYO), CNR-ISTM
X. Lee: Laboratory for Photonics and Interfaces (LPI), Institute of Chemical Sciences and Engineering, Swiss Federal Institute of Technology
D. Martineau: Solaronix S.A. Rue de l'Ouriette 129
S. Narbey: Solaronix S.A. Rue de l'Ouriette 129
F. De Angelis: Computational Laboratory for Hybrid/Organic Photovoltaics (CLHYO), CNR-ISTM
M. Graetzel: Laboratory for Photonics and Interfaces (LPI), Institute of Chemical Sciences and Engineering, Swiss Federal Institute of Technology
Mohammad Khaja Nazeeruddin: Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne

Nature Communications, 2017, vol. 8, issue 1, 1-8

Abstract: Abstract Despite the impressive photovoltaic performances with power conversion efficiency beyond 22%, perovskite solar cells are poorly stable under operation, failing by far the market requirements. Various technological approaches have been proposed to overcome the instability problem, which, while delivering appreciable incremental improvements, are still far from a market-proof solution. Here we show one-year stable perovskite devices by engineering an ultra-stable 2D/3D (HOOC(CH2)4NH3)2PbI4/CH3NH3PbI3 perovskite junction. The 2D/3D forms an exceptional gradually-organized multi-dimensional interface that yields up to 12.9% efficiency in a carbon-based architecture, and 14.6% in standard mesoporous solar cells. To demonstrate the up-scale potential of our technology, we fabricate 10 × 10 cm2 solar modules by a fully printable industrial-scale process, delivering 11.2% efficiency stable for >10,000 h with zero loss in performances measured under controlled standard conditions. This innovative stable and low-cost architecture will enable the timely commercialization of perovskite solar cells.

Date: 2017
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DOI: 10.1038/ncomms15684

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