Towards stable and commercially available perovskite solar cells

Nam-Gyu Park (), Michael Grätzel, Tsutomu Miyasaka, Kai Zhu and Keith Emery
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Nam-Gyu Park: School of Chemical Engineering, Sungkyunkwan University
Michael Grätzel: Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, School of Basic Sciences, Ecole Polytechnique Fédérale de Lausanne
Tsutomu Miyasaka: Toin University of Yokohama, Graduate School of Engineering, Aoba
Kai Zhu: National Renewable Energy Laboratory
Keith Emery: National Renewable Energy Laboratory

Nature Energy, 2016, vol. 1, issue 11, 1-8

Abstract: Abstract Solar cells employing a halide perovskite with an organic cation now show power conversion efficiency of up to 22%. However, these cells are facing issues towards commercialization, such as the need to achieve long-term stability and the development of a manufacturing method for the reproducible fabrication of high-performance devices. Here, we propose a strategy to obtain stable and commercially viable perovskite solar cells. A reproducible manufacturing method is suggested, as well as routes to manage grain boundaries and interfacial charge transport. Electroluminescence is regarded as a metric to gauge theoretical efficiency. We highlight how optimizing the design of device architectures is important not only for achieving high efficiency but also for hysteresis-free and stable performance. We argue that reliable device characterization is needed to ensure the advance of this technology towards practical applications. We believe that perovskite-based devices can be competitive with silicon solar modules, and discuss issues related to the safe management of toxic material.

Date: 2016
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DOI: 10.1038/nenergy.2016.152

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