Integrated halide perovskite photoelectrochemical cells with solar-driven water-splitting efficiency of 20.8%

Austin M. K. Fehr, Ayush Agrawal, Faiz Mandani, Christian L. Conrad, Qi Jiang, So Yeon Park, Olivia Alley, Bor Li, Siraj Sidhik, Isaac Metcalf, Christopher Botello, James L. Young, Jacky Even, Jean Christophe Blancon, Todd G. Deutsch, Kai Zhu, Steve Albrecht, Francesca M. Toma, Michael Wong () and Aditya D. Mohite ()
Additional contact information
Austin M. K. Fehr: Rice University
Ayush Agrawal: Rice University
Faiz Mandani: Rice University
Christian L. Conrad: Rice University
Qi Jiang: National Renewable Energy Laboratory
So Yeon Park: National Renewable Energy Laboratory
Olivia Alley: Lawrence Berkeley National Laboratory
Bor Li: Helmholtz-Zentrum Berlin
Siraj Sidhik: Rice University
Isaac Metcalf: Rice University
Christopher Botello: Rice University
James L. Young: National Renewable Energy Laboratory
Jacky Even: Univ Rennes, INSA Rennes, CNRS, Institut FOTON, UMR 6082
Jean Christophe Blancon: Rice University
Todd G. Deutsch: National Renewable Energy Laboratory
Kai Zhu: National Renewable Energy Laboratory
Steve Albrecht: Helmholtz-Zentrum Berlin
Francesca M. Toma: Lawrence Berkeley National Laboratory
Michael Wong: Rice University
Aditya D. Mohite: Rice University

Nature Communications, 2023, vol. 14, issue 1, 1-12

Abstract: Abstract Achieving high solar-to-hydrogen (STH) efficiency concomitant with long-term durability using low-cost, scalable photo-absorbers is a long-standing challenge. Here we report the design and fabrication of a conductive adhesive-barrier (CAB) that translates >99% of photoelectric power to chemical reactions. The CAB enables halide perovskite-based photoelectrochemical cells with two different architectures that exhibit record STH efficiencies. The first, a co-planar photocathode-photoanode architecture, achieved an STH efficiency of 13.4% and 16.3 h to t60, solely limited by the hygroscopic hole transport layer in the n-i-p device. The second was formed using a monolithic stacked silicon-perovskite tandem, with a peak STH efficiency of 20.8% and 102 h of continuous operation before t60 under AM 1.5G illumination. These advances will lead to efficient, durable, and low-cost solar-driven water-splitting technology with multifunctional barriers.

Date: 2023
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DOI: 10.1038/s41467-023-39290-y

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