Scalable Triple Cation Mixed Halide Perovskite–BiVO<inf>4</inf> Tandems for Bias-Free Water Splitting
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Authors
Andrei, V
Hoye, RLZ
Crespo-Quesada, M
Bajada, M
Ahmad, S
De Volder, M
Friend, R
Reisner, E
Publication Date
2018Journal Title
Advanced Energy Materials
ISSN
1614-6832
Publisher
Wiley
Volume
8
Issue
25
Type
Article
Metadata
Show full item recordCitation
Andrei, V., Hoye, R., Crespo-Quesada, M., Bajada, M., Ahmad, S., De Volder, M., Friend, R., & et al. (2018). Scalable Triple Cation Mixed Halide Perovskite–BiVO<inf>4</inf> Tandems for Bias-Free Water Splitting. Advanced Energy Materials, 8 (25) https://doi.org/10.1002/aenm.201801403
Abstract
Strong interest exists in the development of organic-inorganic lead halide perovskite photovoltaics and of photoelectrochemical
(PEC) tandem absorber systems for solar fuel production. However, their scalability and durability have long been limiting factors.
In this work, we reveal how both fields can be seamlessly merged together, to obtain scalable, bias-free solar water splitting tandem
devices. For this purpose, state-of-the-art cesium formamidinium methylammonium (CsFAMA) triple cation mixed halide perovskite
photovoltaic cells with a nickel oxide (NiOx) hole transport layer are employed to produce Field’s metal-epoxy encapsulated photocathodes.
Their stability (up to 7h), photocurrent density (–12.1 0.3mAcm 2 at 0V vs.RHE) and reproducibility enables a
matching combination with robust BiVO4 photoanodes, resulting in 0.25cm2 PEC tandems with an excellent stability of up to 20h
and a bias-free solar-to-hydrogen efficiency of 0.35 0.14%. The high reliability of the fabrication procedures allows scaling of the
devices up to 10cm2, with a slight decrease in bias-free photocurrent density from 0.39 0.15mAcm 2 to 0.23 0.10mAcm 2 due to
an increasing series resistance. To characterise these devices, a versatile 3D-printed PEC cell was also developed. The modular PEC
cell represents an affordable alternative to existing designs and can be easily adjusted for a broad range of samples. Overall, these
findings shed further light on the factors required to bring both perovskite photovoltaics and photoelectrocatalysis into large-scale
applications, revealing some key aspects for device fabrication, operation and implementation.
Sponsorship
Cambridge Trust, the Winton Programme of Physics of Sustainability, Magdalene College Cambridge, Marie cure Actions of the European Union's Seventh Framework Programme, Christian Doppler Research Association, OMV Group, ERC Starting Grant
Funder references
Christian Doppler Forschungsgesellschaft (unknown)
European Commission (623061)
European Research Council (337739)
Identifiers
External DOI: https://doi.org/10.1002/aenm.201801403
This record's URL: https://www.repository.cam.ac.uk/handle/1810/283406
Rights
Licence:
http://creativecommons.org/licenses/by/4.0/
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