AI Article Synopsis
- The study examines the growth of molybdenum trioxide (MoO3) nanoribbons on silver (Ag) and gold (Au) nanostructures using an ultra-high vacuum (UHV) method under varying substrate temperatures.
- A 2 nm Ag film was deposited on clean silicon substrates, while a 50 nm Au film was applied to a Si(100) substrate, followed by annealing to promote better growth conditions.
- Scanning electron microscopy showed that faceted Au nanostructures supported the growth of MoO3 nanoribbons more effectively than the Ag microstructures did.
Article Abstract
We report the growth of molybdenum trioxide (MoO3) nanoribbons (NRs) on epitaxial Ag and oriented Au nanostructures (NSs) using an ultra-high vacuum (UHV)-molecular beam epitaxy (MBE) technique at different substrate temperatures. An approximately 2 nm silver (Ag) film has been deposited at different growth temperatures (using UHV-MBE) on cleaned Si(100), Si(110), and Si(111) substrates. For faceted Au NSs, an approximately 50 nm Au film has been deposited (using high-vacuum thermal evaporation) on a Si(100) substrate with a native oxide layer at the interface and the sample was annealed in low vacuum (≈10-2) and at high temperature (≈975°C). Scanning electron microscopy measurements were performed to determine the morphology of MoO3/Ag and MoO3/Au composite films. From energy dispersive X-ray spectroscopy elemental mapping and line scans it is found that faceted Au NSs are more favorable for the growth of MoO3 NRs than epitaxial Ag microstructures.
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| http://dx.doi.org/10.1017/S1431927619014648 | DOI Listing |
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