Results 21 to 30 of about 148,020 (202)
Trion induced photoluminescence of a doped MoS2 monolayer [PDF]
The Journal of Chemical Physics, 2020 We demonstrate that the temperature and doping dependencies of the photoluminescence (PL) spectra of a doped MoS2 monolayer have several peculiar characteristics defined by the trion radiative decay. While only zero-momentum exciton states are coupled to light, radiative recombination of non-zero momentum trions is also allowed.
Yaroslav V. Zhumagulov +4 more
openaire +3 more sources
Structural and electronic properties of germanene/MoS2 monolayer and silicene/MoS2 monolayer superlattices [PDF]
Nanoscale Research Letters, 2014 Abstract Superlattice provides a new approach to enrich the class of materials with novel properties. Here, we report the structural and electronic properties of superlattices made with alternate stacking of two-dimensional hexagonal germanene (or silicene) and a MoS2 monolayer using the first principles approach.
Li, Xiaodan +3 more
openaire +3 more sources
Mechanically modulated tunneling resistance in monolayer MoS2 [PDF]
Applied Physics Letters, 2013 We report on the modulation of tunneling resistance in MoS2 monolayers using a conductive atomic force microscope (AFM). The resistance between the conductive AFM probe and the bottom electrode separated by a monolayer MoS2 is reversibly reduced by up to 4 orders of magnitude, which is attributed to enhanced quantum tunneling when the monolayer is ...
Fu, Deyi +6 more
openaire +2 more sources
Valley polarization in MoS2 monolayers by optical pumping [PDF]
Nature Nanotechnology, 2012 We report experimental evidences on selective occupation of the degenerate valleys in MoS2 monolayers by circularly polarized optical pumping. Over 30% valley polarization has been observed at K and K' valley via the polarization resolved luminescence spectra on pristine MoS2 monolayers.
Zeng, H, Dai, J, Xiao, D, Cui, X, Yao, W
openaire +5 more sources
Defect-Mediated Lithium Adsorption and Diffusion on Monolayer Molybdenum Disulfide [PDF]
, 2015 Monolayer Molybdenum Disulfide (MoS2) is a promising anode material for lithium ion batteries because of its high capacities. In this work, first principle calculations based on spin density functional theory were performed to investigate adsorption and ...
Xiaoli Sun +5 more
core +1 more source
Single Layer MoS2 Band Structure and Transport [PDF]
, 2011 Introduction: Ultrathin two dimensional materials have significant potential for application in nano-electronic devices. Graphene is a popular two-dimensional material due to its intrinsic high mobility.
Saumitra R Mehrotra +7 more
core +1 more source
Monolayers of MoS2 as an oxidation protective nanocoating material [PDF]
Journal of Applied Physics, 2014 First-principle calculations are employed to investigate the interaction of oxygen with ideal and defective MoS2 monolayers. Our calculations show that while oxygen atoms are strongly bound on top of sulfur atoms, the oxygen molecule only weakly interacts with the surface.
Sen, H. S. +3 more
openaire +5 more sources
Origin of Structural Transformation in Mono- and Bi-Layered Molybdenum Disulfide [PDF]
, 2016 Mono- and multi-layered molybdenum disulfide (MoS2) is considered to be one of the next generation anode materials for rechargeable ion batteries.
Sun, Xiaoli +3 more
core +1 more source
Temperature-dependent phonon shifts in monolayer MoS2 [PDF]
Applied Physics Letters, 2013 We present a combined experimental and computational study of two-dimensional molybdenum disulfide and the effect of temperature on the frequency shifts of the Raman-active E2g and A1g modes in the monolayer. While both peaks show an expected red-shift with increasing temperature, the frequency shift is larger for the A1g mode than for the E2g mode ...
Lanzillo, Nicholas +11 more
openaire +2 more sources
Strain engineering in monolayer WS2, MoS2, and the WS2/MoS2 heterostructure [PDF]
Applied Physics Letters, 2016 Mechanically exfoliated monolayers of WS2, MoS2 and their van der Waals heterostructure were fabricated on flexible substrate so that uniaxial tensile strain can be applied to the two-dimensional samples. The modification of the band structure under strain was investigated by micro-photoluminescence spectroscopy at room temperature as well as by first ...
Xin He +9 more
openaire +2 more sources