Band Structure of the Layered Transition-Metal Dichalcogenides: An Experimental Study by Electron Paramagnetic Resonance on Nb-Doped MoS2

Abstract

An axial EPH spectrum has been observed for the holes that result when Nb is substituted for Mo in MoS2. From the values of the g tensor it is determined that the holes are in a d»2 band into which the spin-orbit interaction admixes some d"» and d"» orbitals. The EPH results are discussed in terms of the various energy-band structures that have been proposed for MoS2. The data are found to be consistent with the band structure suggested

Band Structure and Charge Density of2H−NbSe2

“…point in their favor is that they introduce no significant heating and therefore may be used to study weakly bound films. 7 Furthermore, since there is no need of high vacuum above the sample surface, neutron measurements can be made over a wide range of coverages and temperatures. Finally, inelastic scattering can be applied to probe the dynamical properties of the films.…”

Phosphorous doped p-type MoS2 polycrystalline thin films via direct sulfurization of Mo film

“…However, particularly this point has been challenging to realize using MoS 2 due to its natural tendency for unipolar (n-type) transport. 12 Even though there have been various reports on p-type doping for MoS 2 , such as nitrogen plasma-assisted doping on exfoliated MoS 2 , [13][14][15] phosphorous ion implantation, 12 a substitutional doping using niobium (Nb) in bulk MoS 2 , 16,17 respectively, such efforts are limited to nano-or micro-scale flakes of MoS 2 obtained from bulk materials. Therefore considerable efforts are required for scalable synthesis of p-type MoS 2 film to realize practical applications.…”

Nernst‐Haber‐Bodenstein‐Preis 1978

“…Below, and slightly overlapping (0.1 eV) with the Mo 4d,,-band is the principal S 3p valence band [35,36]. The existence of a relatively narrow Mo 4dZ2 band which is situated so low that it joins the principal sulfur valence band as well as the resulting consequence, that d-d transitions form the direct absorption edge is well supported by recent band calculations [34,37,38] as well as by paramagnetic resonance measurements of holes [39]. …”