Chemical vapour deposition and characterization of uniform bilayer and trilayer MoS2crystals

2016 ◽  
Vol 4 (47) ◽  
pp. 11081-11087 ◽  
Author(s):  
Adam Zobel ◽  
Alex Boson ◽  
Peter M. Wilson ◽  
Dmitry S. Muratov ◽  
Denis V. Kuznetsov ◽  
...  

We report a chemical vapor deposition procedure for MoS2growth from MoO3and S, which yields predominantly bilayer and trilayer MoS2triangular islands.

2015 ◽  
Vol 2 (5) ◽  
pp. 502-508 ◽  
Author(s):  
Megan B. Sassin ◽  
Jeffrey W. Long ◽  
Jean Marie Wallace ◽  
Debra R. Rolison

We show that two distinct methods, electropolymerization and initiated chemical vapour deposition (iCVD), can be adapted to generate ultrathin polymers (30–50 nm thick) at three dimensionally (3D) porous conductive substrates comprising ∼300 μm-thick carbon-coated silica fiber paper (C@SiO2).


1991 ◽  
Vol 69 (1) ◽  
pp. 108-110 ◽  
Author(s):  
R. Kumar ◽  
R. J. Puddephatt

The η-cyclopentadienyl (Cp) and η-allyl (C3H5) complexes [RhCp(CO)2], [RhCp(cod)] where cod = 1,5-cyclooctadiene, [Rh(η-C3H5)(CO)2], and [Rh(η-C3H5)3] have been shown to be useful precursors for the chemical vapour deposition (CVD) of rhodium films. The rhodium films contain carbon impurities but these can be greatly reduced if CVD is carried out in the presence of hydrogen. The films adhere well to a silicon substrate. The pyrolysis of [RhCp(CO)2] gives CO and [Rh2Cp2(CO)2(μ-CO)] and [Rh3Cp3(μ-CO)3] at intermediate stages. Pyrolysis of [Rh(η-C3H5)3] or [Rh(η-C3H5)(CO)2] gives 1,5-hexadiene as the only organic product, but similar pyrolysis in the presence of hydrogen gives much propene as well as 1,5-hexadiene. Key words: rhodium, deposition, allyl, cyclopentadienyl.


1994 ◽  
Vol 358 ◽  
Author(s):  
Ömer Dag ◽  
Alex Kuperman ◽  
Geoffrey A. Ozin

ABSTRACTSi1−xGexY alloy nanocluster materials are synthesized by the chemical vapour deposition of Si2H6/Ge2H6 mixtures within the diamond lattice of 13Å supercages in acid zeolite Y. A multianalytical approach to the study of these Si1−xGexY nanomaterials over the full compositional range 0<x<1 provides information concerning the mode of formation, geometric and electronic structures, trends in the optical properties of the encapsulated alloy nanoclusters.


2015 ◽  
Vol 3 (5) ◽  
pp. 1106-1112 ◽  
Author(s):  
Biben Wang ◽  
Kostya (Ken) Ostrikov ◽  
Timothy van der Laan ◽  
Ruiwen Shao ◽  
Lin Li

Boron-doped carbon nanoflakes were directly synthesized by hot filament chemical vapor deposition, nontoxic boron carbide was used as the boron source.


2020 ◽  
Vol 8 (6) ◽  
pp. 2061-2065

The presence of active catalyst during graphene growth by alcohol catalytic chemical vapour deposition is a compulsory. This study is aimed to validate the effect of annealing temperature for the formation of active cobalt oxide (Co3O4 ) film on the graphene growth by alcohol catalytic chemical vapour deposition technique. Active Co3O4 film was prepared on silicon wafers by sol-gel process, using cobalt acetate tetrahydrate as the precursor compound and absolute ethanol as the solvent. The active Co3O4 phase was achieved by annealing process at 450, 500, 550 and 600 °C. The graphene is grown from active Co3O4 film under 900 °C of chemical vapor deposition (CVD) processing temperature for 5 minutes. The obtained Co3O4 was characterized by x-ray diffraction and Raman spectroscopy. The as-grown graphene from active Co3O4 film annealed at 450 ⁰C was characterized by Raman spectroscopy and field emission scanning electron microscope (FESEM). The results demonstrate that spinel type cubic structure of Co3O4 could be produced at the varied annealing temperatures but the optimum XRD result was at 500 ⁰C annealing temperature. The presence of active Co3O4 phase was supported with the exhibited peaks of four Raman-active phonon modes in the Raman spectra. The quality of as-grown graphene determined from the ratio of 2D-band over G-band intensities is 1.010; an indication of few layers of graphene. Active Co3O4 film is able to produce good quality of graphene comparable with Ni and Cu catalysts. And graphene can be used in many devices, including electronic device, energy storage device, power device, and others.


2015 ◽  
Vol 32 (6) ◽  
pp. 638
Author(s):  
Xingmin Cai ◽  
Xiaoqiang Su ◽  
Fan Ye ◽  
Huan Wang ◽  
Guangxing Liang ◽  
...  

2020 ◽  
Vol 13 (7) ◽  
pp. 075505
Author(s):  
Tomohiro Yamaguchi ◽  
Hiroki Nagai ◽  
Takanori Kiguchi ◽  
Nao Wakabayashi ◽  
Takuto Igawa ◽  
...  

Author(s):  
A. Ramos-Carrazco ◽  
J. A. Gallardo-Cubedo ◽  
A. Vera-Marquina ◽  
A. L. Leal-Cruz ◽  
J. R. Noriega ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document