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Growth of Molybdenum Trioxide Nanoribbons on Oriented Ag and Au Nanostructures: A Scanning Electron Microscopy (SEM) Study

Published online by Cambridge University Press:  18 June 2019

Paramita Maiti Open the ORCID record for Paramita Maiti [Opens in a new window] ,
Arijit Mitra ,
R. R. Juluri ,
Ashutosh Rath  and
Parlapalli V Satyam
Paramita Maiti*
Affiliation:
Institute of Physics, Sachivalaya Marg, Bhubaneswar 751005, Odisha, India Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400085, India
Arijit Mitra
Affiliation:
School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Argul–Jatni Rd, Kansapada 752050, Odisha, India
R. R. Juluri
Affiliation:
IIIT Ongole, RGUKT-AP, Andhra Pradesh 516330, India
Ashutosh Rath
Affiliation:
Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117575, Singapore
Parlapalli V Satyam
Affiliation:
Institute of Physics, Sachivalaya Marg, Bhubaneswar 751005, Odisha, India Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400085, India
*
*Author for correspondence: Paramita Maiti, E-mail: paramita.maiti1990@gmail.com, paramita@iopb.res.in
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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.

Keywords

energy dispersive X-ray spectroscopy (EDS)molybdenum oxide (MoO3)noble metal (Ag/Au)scanning electron microscopy (SEM)
Type
Materials Applications
Information
Microscopy and Microanalysis , Volume 25 , Issue 6 , December 2019 , pp. 1449 - 1456
Copyright
Copyright © Microscopy Society of America 2019 

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