Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 5, Issue 15, Pages 7621-7625Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am401936q
Keywords
He-ion plasma; nanostructures; WO3; solar water splitting
Funding
- BioSolar Cells open innovation consortium
- Dutch Ministry of Economic Affairs, Agriculture and Innovation [C1.7]
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)
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One of the main challenges in developing highly efficient nanostructured photoelectrodes is to achieve good control over the desired morphology and good electrical conductivity. We present an efficient plasma-processing technique to form porous structures in tungsten substrates. After an optimized two-step annealing procedure, the mesoporous tungsten transforms into photoactive monoclinic WO3. The excellent control over the feature size and good contact between the crystallites obtained with the plasma technique offers an exciting new synthesis route for nanostructured materials for use in processes such as solar water splitting.
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