Nanostructured Photoelectrodes for Solar Energy Conversion
Summary
Nanostructured photoelectrodes have emerged as a cornerstone in the development of advanced solar energy conversion systems, combining tailored light‐matter interactions with enhanced charge transport properties. By engineering features at the nanoscale—such as one‐dimensional nanorods, nanowires and nanotubes, as well as hierarchical porous films—researchers achieve dramatic increases in surface area, light absorption and separation of photogenerated charge carriers. Materials ranging from titanium dioxide and other metal oxides to complex perovskites and chalcogenides can be fashioned into nanoscale architectures that facilitate rapid electron transport and suppress recombination losses. Surface modifications, including dopant incorporation, core–shell structuring and heterojunction formation, further tune band‐edge positions and introduce catalytic sites for reactions such as water oxidation. This convergence of materials design and device engineering underpins applications spanning dye‐sensitised and perovskite photovoltaics through to photoelectrochemical water splitting for hydrogen production. Scalability and stability remain active challenges, driving the pursuit of low‐cost synthesis methods, robust coatings and integrated tandem systems. The global significance of nanostructured photoelectrodes lies in their potential to deliver high‐efficiency, durable and economically viable solutions for sustainable energy harvesting and storage.
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Nanostructured Photoelectrodes for Solar Energy Conversion publication trend
The graph below shows the total number of articles in nanostructured photoelectrodes for solar energy conversion across all publications each year (not limited to Nature Index journals).
Technical terms
Nanostructured photoelectrode: An electrode designed with nanoscale features to enhance light absorption, carrier separation and surface reaction kinetics.
Photoanode: The illuminated electrode in a photoelectrochemical cell where oxidation reactions occur upon light absorption.
Charge separation: The spatial division of photogenerated electrons and holes to reduce recombination and maximise usable photocurrent.
Heterojunction: An interface between two semiconductors with differing band structures that facilitates directional charge transfer.
Surface area: The effective exposed area of an electrode per unit geometric area, critically influencing catalytic and optical performance.
References
- On the Morphology of Nanostructured TiO2 for Energy Applications: The Shape of the Ubiquitous Nanomaterial. Nanomaterials (2022).
- Enhanced Photoelectrochemical Properties of Ti3+ Self-Doped Branched TiO2 Nanorod Arrays with Visible Light Absorption. Materials (2018).
- One-Dimensional TiO2 Nanostructured Photoanodes: From Dye-Sensitised Solar Cells to Perovskite Solar Cells. Energies (2016).
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