Effect of plasma voltage on sulfurization of α-MoO{sub 3} nanostructured thin films

Journal Article · Fri May 06 00:00:00 EDT 2016 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4946221· OSTI ID:22591324

Kumar, Prabhat; Singh, Megha; Sharma, Rabindar K.; Reddy, G. B. ^[1]

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1. Thin Film Laboratory, Physics Department, Indian Institute of Technology Delhi, Hauz Khas, New Delhi-110016 (India)

In this report, the effect of plasma voltage on plasma assisted sulfurization (PAS) of vertically aligned molybdenum trioxide (α- MoO{sub 3}) nanoflakes (NFs) on glass substrates has been studied systematically. MoO{sub 3} NFs were deposited using plasma assisted sublimation process. These nanoflakes were subjected to H{sub 2}S/Ar plasma at two different plasma voltages 600 and 1000 volts; to study the effect of plasma ionization on degree of sulfurization of MoO{sub 3} into MoS{sub 2}. XRD and Raman analysis show that film sulfurized at 1000 volts have relatively higher degree of conversion into MoS{sub 2}, as more intense peaks of MoS{sub 2} and MoO{sub 2} are obtained than that sulfurized at 600 volts. HRTEM of sulfurized film shows that outer surface of nanoflake has been converted into MoS{sub 2} (4-5 monolayers). Meanwhile, MoO{sub 3} was reduced into MoO{sub 2} as confirmed by XRD and Raman results. All the observed results are well in consonance with each other.

• OSTI ID: 22591324
• Journal Information: AIP Conference Proceedings, Vol. 1728, Issue 1; Conference: ICC 2015: International conference on condensed matter and applied physics, Bikaner (India), 30-31 Oct 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
77 NANOSCIENCE AND NANOTECHNOLOGY
ELECTRIC POTENTIAL
GLASS
HYDROGEN SULFIDES
IONIZATION
MOLYBDENUM OXIDES
MOLYBDENUM SULFIDES
NANOSTRUCTURES
PLASMA
RAMAN SPECTROSCOPY
SILICON OXIDES
SUBLIMATION
SUBSTRATES
SURFACES
THIN FILMS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION