Effective N-methyl-2-pyrrolidone wet cleaning for fabricating high-performance monolayer MoS2 transistors

Chen, Po Chun; Lin, Chih Pin; Hong, Chuan; Yang, Chih Hao; Lin, Yun Lung; Li, Ming Yang; Li, Lain‐Jong; Yu, Tung‐Yuan; Su, Chun Jung; Li, Kai Shin; Hou, Tuo‐Hung; Lan, Yann Wen

doi:10.1007/s12274-018-2215-5

Cited by 15 publications

(13 citation statements)

References 40 publications

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“…We therefore, employed only acetone and NMP since their effects on graphene's quality are well studied. [48][49][50][51] Since the used GNR growth substrates do not exceed 5x5 mm in size, after fabrication the chip is broken into smaller pieces with 100-200 devices each before the GNRs to target substrate transfer.…”

Section: Graphene Electrodesmentioning

confidence: 99%

Optimized graphene electrodes for contacting graphene nanoribbons

Braun

Overbeck

Abbassi³

et al. 2021

Carbon

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Section: Graphene Electrodesmentioning

confidence: 99%

Optimized graphene electrodes for contacting graphene nanoribbons

Braun

Overbeck

Abbassi³

et al. 2021

Carbon

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“…Figure shows the deconvoluted Mo 3d, S 2p, and Sn 3d spectra of the MoS 2 and defect-free and defect-rich MoS 2 /SnS 2 nanosheet cocatalysts. The MoS 2 doublet Mo 3d 3/2 and Mo 3d 5/2 peaks were found to be 232.9 and 229.7 eV, respectively . The S 2s peak was attributed to 226.8 eV .…”

Section: Resultsmentioning

confidence: 88%

Defect Mediated Improvements in the Photoelectrochemical Activity of MoS₂/SnS₂ Ultrathin Sheets on Si Photocathode for Hydrogen Evolution

Jena

Pichaimuthu

Leniec

et al. 2022

ACS Appl. Mater. Interfaces

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Solar-driven water electrolysis to produce hydrogen is one of the clean energy options for the current energy-related challenges. Si as a photocathode exhibits a large overpotential due to the slow hydrogen evolution reaction (HER) kinetics and hence needs to be modified with a cocatalyst layer. MoS2 is a poor HER cocatalyst due to its inert basal plane. Activation of the MoS2 basal plane will facilitate HER kinetics. In this study, we have incorporated SnS2 into MoS2 ultrathin sheets to induce defect formation and phase transformation. MoS2/SnS2 composite ultrathin sheets with a Sn2+ state create a large number of S vacancies on the basal sites. The optimized defect-rich MoS2/SnS2 ultrathin sheets decorated on surface-modified Si micro pyramids as photocathodes show a current density of −23.8 mA/cm2 at 0 V with an onset potential of 0.23 V under acidic conditions, which is higher than that of the pristine MoS2. The incorporation of SnS2 into 2H-MoS2 ultrathin sheets not only induces a phase but also can alter the local atomic arrangement, which in turn is verified by their magnetic response. The diamagnetic SnS2 phase causes a decrease in symmetry and an increase in magnetic anisotropy of the Mo3+ ions.

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“…Continuous monolayer MoS 2 films were deposited on a sapphire substrate via chemical vapor deposition (CVD) by using sulfuring MoO 3 powder at 750 °C. We then transferred a continuous monolayer of MoS 2 from sapphire to GFNO using the poly(methyl methacrylate) (PMMA) assist wet transfer process . Following removal of the PMMA using acetone, the MoS 2 /GFNO was annealed at 400 °C.…”

Section: Methodsmentioning

confidence: 99%

“…We then transferred a continuous monolayer of MoS 2 from sapphire to GFNO using the poly(methyl methacrylate) (PMMA) assist wet transfer process. 57 Following removal of the PMMA using acetone, the MoS 2 /GFNO was annealed at 400 °C. A Pt capping layer was deposited using a lift-off photolithography process to serve as an electrode for device characterization (active electrode area of 100 μm in diameter).…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Pulse-Mediated Electronic Tuning of the MoS₂–Perovskite Ferroelectric Field Effect Transistors

Chen

Chang

Tang

et al. 2020

ACS Appl. Electron. Mater.

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This paper reports on the fabrication of a ferroelectric field effect transistor (FeFET) using a monolayer MoS2 film and a perovskite GdNi0.2Fe0.8O3 (GFNO) ferroelectric film. We demonstrate the tuning of electrical characteristics using pulse voltage to evoke a 2H–1T′ phase transition in the MoS2. Coupling at the MoS2–GFNO interface is the mechanism responsible for the electronic tuning. Locally reversing the ferroelectric polarization of the perovskite GFNO through the application of pulse voltage makes it possible to manipulate the carrier concentration and associated phase of the MoS2 via heterostructure interactions. Our experiment results are supported by free energy calculations pertaining to heterostructures under the effects of an electric field. Analysis of the nonvolatile properties of the FeFET using the scanning probe method and scanning photoelectron spectroscopy revealed that the transition indeed occurred across much of the device landscape. The design established in this study paves the way to the development of laterally two-dimensional FeFET, which could provide nonvolatile characteristics with a less destructive read–write process.

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Effective N-methyl-2-pyrrolidone wet cleaning for fabricating high-performance monolayer MoS2 transistors

Cited by 15 publications

References 40 publications

Optimized graphene electrodes for contacting graphene nanoribbons

Optimized graphene electrodes for contacting graphene nanoribbons

Defect Mediated Improvements in the Photoelectrochemical Activity of MoS₂/SnS₂ Ultrathin Sheets on Si Photocathode for Hydrogen Evolution

Pulse-Mediated Electronic Tuning of the MoS₂–Perovskite Ferroelectric Field Effect Transistors

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Effective N-methyl-2-pyrrolidone wet cleaning for fabricating high-performance monolayer MoS2 transistors

Cited by 15 publications

References 40 publications

Optimized graphene electrodes for contacting graphene nanoribbons

Optimized graphene electrodes for contacting graphene nanoribbons

Defect Mediated Improvements in the Photoelectrochemical Activity of MoS2/SnS2 Ultrathin Sheets on Si Photocathode for Hydrogen Evolution

Pulse-Mediated Electronic Tuning of the MoS2–Perovskite Ferroelectric Field Effect Transistors

Contact Info

Product

Resources

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Defect Mediated Improvements in the Photoelectrochemical Activity of MoS₂/SnS₂ Ultrathin Sheets on Si Photocathode for Hydrogen Evolution

Pulse-Mediated Electronic Tuning of the MoS₂–Perovskite Ferroelectric Field Effect Transistors