Composite Nanostructures of TiO2 and ZnO for Water Splitting Application: Atomic Layer Deposition Growth and Density Functional Theory Investigation

Kulmas M, Paerson L, Höflich K, Bashouti MY, Wu Y, Göbelt M, Ristein J, Bachmann J, Meyer B, Christiansen S (2016)


Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2016

Journal

Publisher: Wiley-VCH Verlag

Book Volume: 26

Pages Range: 4882-4889

Journal Issue: 27

DOI: 10.1002/adfm.201505524

Abstract

The commercialization of solar fuel devices requires the development of novel engineered photoelectrodes for water splitting applications which are based on redundant, cheap, and environmentally friendly materials. In the current study, a combination of titanium dioxide (TiO) and zinc oxide (ZnO) onto nanotextured silicon is utilized for a composite electrode with the aim to overcome the individual shortcomings of the respective materials. The properties of conformal coverage of TiO and ZnO layers are designed on the atomic scale by the atomic layer deposition technique. The resulting photoanode shows not only promising stability but also nine times higher photocurrents than an equivalent photoanode with a pure TiO encapsulation onto the nanostructured silicon. Density functional theory calculations indicate that segregation of TiO at the ZnO surfaces is favorable and leads to the stabilization of the ZnO layers in water environments. In conclusion, the novel designed composite material constitutes a promising base for a stable and effective photoanode for the water oxidation reaction.

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APA:

Kulmas, M., Paerson, L., Höflich, K., Bashouti, M.Y., Wu, Y., Göbelt, M.,... Christiansen, S. (2016). Composite Nanostructures of TiO2 and ZnO for Water Splitting Application: Atomic Layer Deposition Growth and Density Functional Theory Investigation. Advanced Functional Materials, 26(27), 4882-4889. https://dx.doi.org/10.1002/adfm.201505524

MLA:

Kulmas, Marina, et al. "Composite Nanostructures of TiO2 and ZnO for Water Splitting Application: Atomic Layer Deposition Growth and Density Functional Theory Investigation." Advanced Functional Materials 26.27 (2016): 4882-4889.

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