Gold nanoparticle assisted synthesis of MoS₂ monolayers by chemical vapor deposition

Abstract

The use of metal nanoparticles is an established paradigm for the synthesis of semiconducting one-dimensional nanostructures: in this work we study their effect on the synthesis of two-dimensional semiconducting materials,...

Exciton and Trion at the Perimeter and Grain Boundary of CVD-Grown Monolayer MoS2: Strain Effects Influencing Application in Nano-Optoelectronics

“…As a consequence, a small amount of PTCDA in a gas phase diffused downstream and deposited onto the SiO 2 /Si substrate, promoting thereby the nucleation of MoS 2 and the subsequent growth of MoS 2 flakes by altering the thermodynamics and kinetics of the reactions and by enhancing the nucleation probability of MoS 2 seeds. These mechanisms were discussed in detail elsewhere. ,, After the stabilization of the substrate temperature, the boat with S was heated for about 2 min to 140 °C. The system was maintained at these growth conditions with 300 sccm of N 2 flowing for 10 min and, thereafter, cooled down naturally to room temperature.…”

Built-in tensile strain dependence on the lateral size of monolayer MoS2 synthesized by liquid precursor chemical vapor deposition

“…The sulfur boat is positioned in a low temperature zone ( T = 180° C), while the growth substrate, after the spinning process of the Mo precursor solution, is placed in the high temperature zone (810 °C < T < 830 °C). 77,78…”

“…The sulfur boat is positioned in a low temperature zone (T = 180°C), while the growth substrate, after the spinning process of the Mo precursor solution, is placed in the high temperature zone (810 °C < T < 830 °C). 77,78 AFM topography and phase maps were collected using a Bruker AFM operated in the scan assist mode. Scanning Raman and photoluminescence spectroscopy were carried out with a Renishaw InVia system, equipped with a confocal microscope, a 532 nm excitation laser and a 2400 line per mm grating (spectral resolution <1 cm −1 ).…”

Molybdenum disulfide nanostructures coupled with metal plasmonics for improved electronic and photonic performances

“…In terms of techniques, the CVD approach was mostly used for the epitaxial growth of MoS 2 layers. 41 Due to the merits of the CVD technique, the thickness of the MoS 2 nanostructures could be modulated. The intriguing advantages of this synthesis route were indicated in both layer control and morphological uniformity.…”