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Issue 44, 2018
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A bright outlook on organic photoelectrochemical cells for water splitting

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Abstract

Photoelectrochemcial (PEC) water splitting is increasingly attracting attention as a means to generate clean, renewable hydrogen fuel from solar energy. This Highlight article covers the key advances that have been made over recent years in organic photoelectrochemical (OPEC) cell research, and identifies a pathway forwards combining state-of-the-art materials and device engineering from both the organic photovoltaics and inorganic PEC water splitting communities. We discuss the advantages of using buried junction device architectures in OPEC photoelectrodes and identify the need for new materials for OPEC water splitting cells in order to improve their efficiency and operating stability. We present an overview on promising new absorbers and device architectures employed in the parallel field of organic photovoltaics with a critical view on requirements for OPEC water splitting. We also elaborate on progress made with organic multijunction cells that we see as promising photocathode designs for voltage-unassisted water splitting. Finally, we see the urgent need for benchmarking rules, in terms of performance and stability parameters, as this emerging field of OPEC water splitting progresses.

Graphical abstract: A bright outlook on organic photoelectrochemical cells for water splitting

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Article information


Submitted
20 Jul 2018
Accepted
12 Sep 2018
First published
08 Oct 2018

This article is Open Access

J. Mater. Chem. A, 2018,6, 21809-21826
Article type
Review Article

A bright outlook on organic photoelectrochemical cells for water splitting

L. Steier and S. Holliday, J. Mater. Chem. A, 2018, 6, 21809
DOI: 10.1039/C8TA07036A

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    [Original citation] - Published by The Royal Society of Chemistry.

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