Layer type tungsten dichalcogenide compounds: their preparation, structure, properties and uses

Srivastava, Suneel Kumar; Avasthi, B. N.

doi:10.1007/bf00552369

Cited by 70 publications

(29 citation statements)

References 79 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Owing to the superior σ at comparable |S|, the power factor of the 2D monolayers is one order of magnitude larger than that of the 3D bulks, which is good agreement with [36][37][38][39][40][41]. (b) The power factor vs σ is exhibited for reported bulks (gray area) and large-area monolayers (green area) [36][37][38][39][40][41]. A significant enhancement in the 2D monolayer forms results in a power factor that is one order of magnitude larger than that in the 3D bulk forms.…”

supporting

confidence: 78%

See 1 more Smart Citation

Enhanced thermoelectric power in two-dimensional transition metal dichalcogenide monolayers

Kanahashi

Cuong

et al. 2016

Phys. Rev. B

View full text Add to dashboard Cite

The carrier-density-dependent conductance and thermoelectric properties of large-area MoS 2 and WSe 2 monolayers are simultaneously investigated using the electrolyte gating method. The sign of the thermoelectric power changes across the transistor off-state in the ambipolar WSe 2 transistor as the majority carrier density switches from electron to hole. The thermopower and thermoelectric power factor of monolayer samples are one order of magnitude larger than that of bulk materials, and their carrier-density dependences exhibit a quantitative agreement with the semiclassical Mott relation based on the two-dimensional energy band structure, concluding the thermoelectric properties are enhanced by the low-dimensional effect.

show abstract

supporting

confidence: 78%

“…The comparison between large-area 2D monolayers and 3D bulks is summarized in Figs. 3(a) and 3(b), representing various semiconducting TMDC bulks, MoS 2 monolayers, and WSe 2 monolayers by black, blue, and red symbols, respectively [36][37][38][39][40][41]. We selected only large-area samples and excluded tiny single-crystal films.…”

mentioning

confidence: 99%

Enhanced thermoelectric power in two-dimensional transition metal dichalcogenide monolayers

Kanahashi

Cuong

et al. 2016

Phys. Rev. B

View full text Add to dashboard Cite

show abstract

“…Due to their unique structure layered transition metal dichalcogenides can accommodate atoms, ions or organic molecules in the van der Waals gap of the weakly bonded S-W-S layers [11]. Previous studies demonstrated that intercalation of IF-MoS 2 with alkali metals had led to changes in their structural and physical properties [12].…”

Section: Introductionmentioning

confidence: 98%

Transport properties of fullerene‐like WS₂ nanoparticles

Kopnov

Yoffe

Leitus

et al. 2006

Physica Status Solidi (b)

View full text Add to dashboard Cite

Electrical resistivity and Hall effect measurements of pellets compacted from fullerene-like WS 2 nanoparticles (IF-WS 2 ) and bulk 2H-WS 2 powder were carried out using the van der Pauw method over a wide temperature range. In addition IF-WS 2 pellets were annealed at elevated temperatures under vacuum in a specially designed system. Arrhenius plots for the conductivities of the WS 2 samples (2H, IF and IF+annealing) exhibit marked uprise of ∂ ln (s T -1 )/∂T -1 with temperature. The resistivity of the nonannealed IF-WS 2 pellets is higher by 2 -8 orders of magnitude than that of 2H-WS 2 pellets, whereas the resistivity of the annealed IF pellets is higher than that of the non-annealed ones. Hall Effect measurements at 300 K show p-type conductivity and similar carrier concentration for both types of materials. The carrier mobility of 2H-WS 2 platelets is found to be in the range of the reported values. However, IF-WS 2 pellets have shown an unusually low mobility for a semiconducting material. The experimental data was found to be in a good agreement with a model used for analyzing the conductivity of polycrystalline semiconductors, which takes into consideration fluctuations of the barrier heights among the different nanoparticles as well as within a single nanoparticle boundary.

show abstract

“…Since last three decades, there is a considerable interest in the layered transition-metal dichalcogenides (MX 2 : M = transitionmetal atom from IVB, VB or VIB group, X = S, Se or Te). In photoelectrochemical cells [3,4] they have frequent applications as electrode materials and exhibit band gaps well matched with the solar spectrum, hence can be treated as prototype materials for photovoltaic and opto-electronic devices [5]. They also possess very good antifriction properties and are extensively employed as solid lubricant.…”

Section: Introductionmentioning

confidence: 99%

Electronic structure of layer type tungsten metal dichalcogenides WX2 (X=S, Se) using Compton spectroscopy: Theory and experiment

Arora¹,

Sharma²,

Sharma

et al. 2009

Journal of Alloys and Compounds

View full text Add to dashboard Cite

Layer type tungsten dichalcogenide compounds: their preparation, structure, properties and uses

Cited by 70 publications

References 79 publications

Enhanced thermoelectric power in two-dimensional transition metal dichalcogenide monolayers

Enhanced thermoelectric power in two-dimensional transition metal dichalcogenide monolayers

Transport properties of fullerene‐like WS₂ nanoparticles

Electronic structure of layer type tungsten metal dichalcogenides WX2 (X=S, Se) using Compton spectroscopy: Theory and experiment

Contact Info

Product

Resources

About

Layer type tungsten dichalcogenide compounds: their preparation, structure, properties and uses

Cited by 70 publications

References 79 publications

Enhanced thermoelectric power in two-dimensional transition metal dichalcogenide monolayers

Enhanced thermoelectric power in two-dimensional transition metal dichalcogenide monolayers

Transport properties of fullerene‐like WS2 nanoparticles

Electronic structure of layer type tungsten metal dichalcogenides WX2 (X=S, Se) using Compton spectroscopy: Theory and experiment

Contact Info

Product

Resources

About

Transport properties of fullerene‐like WS₂ nanoparticles