Atomic layer deposition of ZnO on Cu-nanoclusters for methanol synthesis
The properties of ALD-grown ZnO thin films on Cu clusters supported on ZnO (10 1̄ 0) have been studied with scanning tunneling and scanning electron microscopy in combination with angle-resolved x-ray photoelectron spectroscopy. Deposition at room temperature of two monolayers of Cu on ZnO (10 1̄ 0) results in metallic Cu0 clusters ∼8 nm wide by 1.4 nm high. Higher coverages of 15 ML results in a similar morphology, with slightly larger cluster sizes. Following air-exposure and ALD-growth of two cycles of ZnO, the Cu exhibits Cu+ species characteristic of Cu2O and the thin ZnO coating is hydroxylated. Electrochemical studies of ALD ZnO coatings on Cu suggest that they are more active for CO2 reduction. © 2013 American Vacuum Society.
Publication Source (Journal or Book title)
Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Zhang, Z., Patterson, M., Ren, M., Wang, Y., Flake, J., Sprunger, P., & Kurtz, R. (2013). Atomic layer deposition of ZnO on Cu-nanoclusters for methanol synthesis. Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films, 31 (1) https://doi.org/10.1116/1.4772460