On the performance of vertical MoS2 nanoflakes as a gas sensor

Barzegar, Mohsen; zad, Azam Iraji; Tiwari, Ashutosh

doi:10.1016/j.vacuum.2019.05.033

Cited by 40 publications

(22 citation statements)

References 73 publications

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“…[ 144 ] Vertical MoS 2 nanoflakes film as the n‐channel FET gas sensor displayed high and rapid responses to methanol as well as ethanol at concentrations range of 1 and 10 ppm. [ 57 ] The obtained sensor response value is ≈2.7 for ethanol and 2.2 for methanol 1 ppm concentration at room temperature. The response increased with temperature and it reaches 9.7 and 4.6 at 50 °C in similar conditions.…”

Section: Applications Of Vertically Aligned 2d Materialsmentioning

confidence: 93%

“…The Raman wavenumber difference of single layer and bulk MoS 2 on the SiO 2 /Si substrates are reported to be approximately 20.1 cm –1 and more than 25 cm –1 , respectively. [ 57 ] The integrated intensity ratio of the Raman modes (A 1g /E 1 2g ) provides information about the orientation and texture nature of vertical MoS 2 . Since A 1g mode corresponds to out‐of‐plane Mo–S phonon, it is preferential for vertical growth whereas E 1 2g mode corresponds to in‐plane Mo–S vibrational mode and is preferential for horizontal growth.…”

Section: Properties Of Vertically Aligned 2d Materials and Its Hetero...mentioning

confidence: 99%

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Vertically Aligned Graphene‐Analogous Low‐Dimensional Materials: A Review on Emerging Trends, Recent Developments, and Future Perspectives

Shinde

Samal

Rout

2022

Adv Materials Inter

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2D materials currently includes graphene, transition metal dichalcogenides (TMDs), hexagonal boron nitride (h-BN), 2D carbides/nitrides (MXenes), monoelemental Xenes, and perovskites. [2][3][4][5][6] These families opened new horizons for advanced applications since they have unusual electronic, mechanical, and optical properties. Though these materials have layered structures, yet their diversity in properties highly depends on their composition and phases.Graphene owns interesting properties like large surface area, dangling bond-free surface, high carrier mobility, high optical absorption coefficient, high Young's modulus, and high thermal conductivity. [7] However, the zero bandgap and semimetal properties of graphene limit its application in switching devices. h-BN attracted magnetized attention due to its superb chemical stability and intrinsic insulation. [8] As one of the most studied families, TMDs offer diversity in compositions, and phases, which exhibit many technologically interesting properties. [9][10][11] Among TMDs, MoS 2 is the most examined and well-explored material due to its robustness and semiconducting properties. TMDs offer a unique combination of atomic-scale thickness, strong spin-orbit coupling, sizeable bandgap, and favorable optoelectronic properties for numerous applications. [12] MXenes represent a large family of 2D materials whose several structures were predicted theoretically, while several of them have been realized experimentally also such as Ti

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Section: Applications Of Vertically Aligned 2d Materialsmentioning

confidence: 93%

Section: Properties Of Vertically Aligned 2d Materials and Its Hetero...mentioning

confidence: 99%

Vertically Aligned Graphene‐Analogous Low‐Dimensional Materials: A Review on Emerging Trends, Recent Developments, and Future Perspectives

Shinde

Samal

Rout

2022

Adv Materials Inter

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“…Up to now, a large number of studies have been carried out on the various nanostructures of MoS 2 , including nanoflakes (Johari et al, 2020), nanotubes (Zhong et al, 2020), nanospheres (Li Y. X. et al, 2019) and other complex hierarchical nanostructures (Zhang et al, 2018b;Agrawal et al, 2020), to realize more effective methods of detecting SF 6 decomposed products. Besides, the evident correlation has been confirmed between unique structures and performances (Barzegar et al, 2019;Wang et al, 2020). Therefore, the morphology synthesis and analysis of MoS 2 nanostructures are of great significant to discuss.…”

Section: Introductionmentioning

confidence: 94%

Morphological Characteristics of Molybdenum Disulfide and Current Application on Detecting SF6 Decomposing Products

Qian¹,

Peng²,

Wang³

et al. 2020

Front. Mater.

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“…(ppm) T (°C) Sensitivity Response/recovery times (s) Refs. Morphological design Hierarchically MoS 2 nanospheres CO 500 230 92.6( R a /R g ) 18/15 [ 188 ] 3D hierarchical porous MoS 2 microspheres H 2 500 120 20.5% 30/60 [ 185 ] MoS 2 nanoflakes Ethanol Methanol 10 50 17.6(I D /I 0 ) 10.8(I D /I 0 ) 53/– 67/– [ 244 ] 3D MoS 2 Aerogel NO 2 0.5 200 120% 33/107 [ 195 ] Edge-oriented MoS 2 flakes H 2 10,000 RT 1% 14.3/136.8 [ 189 ] Atomic layered MoS 2 NO 2 0.12 RT 35% n.a [ 193 ] Monolayer MoS ...…”

Section: Molybdenum Disulfide (Mos 2 ) Gas Sensing Materialsmentioning

confidence: 99%

Advanced Strategies to Improve Performances of Molybdenum-Based Gas Sensors

et al. 2021

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Molybdenum-based materials have been intensively investigated for high-performance gas sensor applications. Particularly, molybdenum oxides and dichalcogenides nanostructures have been widely examined due to their tunable structural and physicochemical properties that meet sensor requirements. These materials have good durability, are naturally abundant, low cost, and have facile preparation, allowing scalable fabrication to fulfill the growing demand of susceptible sensor devices. Significant advances have been made in recent decades to design and fabricate various molybdenum oxides- and dichalcogenides-based sensing materials, though it is still challenging to achieve high performances. Therefore, many experimental and theoretical investigations have been devoted to exploring suitable approaches which can significantly enhance their gas sensing properties. This review comprehensively examines recent advanced strategies to improve the nanostructured molybdenum-based material performance for detecting harmful pollutants, dangerous gases, or even exhaled breath monitoring. The summary and future challenges to advance their gas sensing performances will also be presented.

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On the performance of vertical MoS2 nanoflakes as a gas sensor

Cited by 40 publications

References 73 publications

Vertically Aligned Graphene‐Analogous Low‐Dimensional Materials: A Review on Emerging Trends, Recent Developments, and Future Perspectives

Vertically Aligned Graphene‐Analogous Low‐Dimensional Materials: A Review on Emerging Trends, Recent Developments, and Future Perspectives

Morphological Characteristics of Molybdenum Disulfide and Current Application on Detecting SF6 Decomposing Products

Advanced Strategies to Improve Performances of Molybdenum-Based Gas Sensors

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