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Integrated Photoelectrolysis of Water Implemented On Organic Metal Halide Perovskite Photoelectrode
KTH, School of Chemical Science and Engineering (CHE), Chemistry.
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2016 (English)In: ACS Applied Materials and Interfaces, ISSN 1944-8244, E-ISSN 1944-8252, Vol. 8, no 19, 11904-11909 p.Article in journal (Refereed) PublishedText
Abstract [en]

Herein we report on integrated photoelectrolysis of water employing organic metal halide (OMH) perovskite material. Generic OMH perovskite material and device architecture are highly susceptible to degradation by moisture and water. We found that decomposition of perovskite devices proceeds by water ingress through pinholes in upper layers and is strongly affected by applied bias/light and electrolyte pH. It was also found that a pinhole-free hole transport layer (HTL) could significantly enhance the stability of the perovskite photoelectrode, thereby extending the photoelectrode lifetime to several tens of minutes, which is an unprecedented record-long operation. Furthermore, a carbon nanotube (CNT)/polymer composite layer was developed that can effectively protect the underlying perovskite layer from electrolyte molecules.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2016. Vol. 8, no 19, 11904-11909 p.
Keyword [en]
perovskite, water photolysis, photoanode, solar energy, photoelectrochemistry
National Category
Materials Chemistry Nano Technology
URN: urn:nbn:se:kth:diva-188734DOI: 10.1021/acsami.6b03478ISI: 000376330800003PubMedID: 27120406ScopusID: 2-s2.0-84971291336OAI: diva2:939688

QC 20160620

Available from: 2016-06-20 Created: 2016-06-17 Last updated: 2016-06-20Bibliographically approved

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