Liquid Phase Exfoliation and Microwave Assisted Modification in MoS2 Nanostructure

Deb, Rajesh; Kumar, Rajesh; Nair, Manjula G.; Mohapatra, Swagat K.

doi:10.1007/978-981-16-5407-7_2

Cited by 2 publications

(1 citation statement)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Bulk MoS 2 has an indirect band gap small indirect band gap of 1.29 eV but MoS 2 in monolayer form has a direct band gap of about 1.9 eV [4] and this bandgap increases with number of layers [10,11]. Few layer MoS 2 with band gap in the range of 2-4 eV falls under the category of wide band gap semiconductors [12,13]. Wide band gap semiconductors have high optical transparency, controllable carrier concentration, and tunable electrical conductivity and can withstand higher temperatures, voltages and frequencies.…”

Section: Introductionmentioning

confidence: 99%

Silver Nanoparticles Decorated Wide Band Gap MoS2 Nanosheet: Enhanced Optical and Electrical Properties

Gogoi,

Deb

2024

Plasmonics

View full text Add to dashboard Cite

Metal nanoparticles decorated Molybdenum disulphide (MoS 2 ) nanosheets have received great attention of researchers due to their potential applications in biosensing, optoelectronics, photocatalysis, SERS, etc.Here, we report the enhanced optical and electrical properties of wide band gap MoS 2 nanosheets when decorated with silver nanoparticles (Ag-MoS 2 nanosheets). Field Emission Scanning Electron Spectroscopy (FESEM) images reveal the formation of well-shaped MoS 2 nanosheet-like structures decorated with silver nanowires. MoS 2 nanosheets are 27.9 µm long and 12.9 µm wide and the thickness is in the range of nanometer. X-ray diffraction (XRD) spectra show peaks at 25.46°, 33.79°, 36.28°, and 50.97° corresponding to ( 111), ( 100), (102), and (105) crystalline planes for pure MoS 2 and at 47.26° and 78.28° corresponding to the ( 200) and ( 311) crystalline planes for silver in Ag-MoS 2 nanosheets respectively. The UV-Vis absorption peak is observed at 340 nm for MoS 2 but gets blue-shifted for Ag-MoS 2 nanosheets. The calculated band gap is found to be 3.05eV for MoS 2 nanosheet, so it falls under the category of wide band gap (2-4 eV) semiconductors which can have potential application in UV photodetection. From the photoluminescence spectra, we have observed enhanced emission for Ag-MoS 2 in the range of 410-470 nm for the excitation wavelength 280 nm. Raman peak intensity of MoS 2 nanosheet has increased signi cantly when decorated with Ag nanostructure which can have potential SERS application. I-V characteristic of Ag-MoS 2 nanosheets under illumination exhibits negative photoconductivity but is positive for pristine MoS 2 nanosheets.

show abstract

Section: Introductionmentioning

confidence: 99%

Silver Nanoparticles Decorated Wide Band Gap MoS2 Nanosheet: Enhanced Optical and Electrical Properties

Gogoi,

Deb

2024

Plasmonics

View full text Add to dashboard Cite

show abstract

Silver Nanoparticles Decorated Wide Band Gap MoS 2 Nanosheet: Enhanced Optical and Electrical Properties

Gogoi,

Deb

2024

Preprint

View full text Add to dashboard Cite

Metal nanoparticles decorated Molybdenum disulphide (MoS2) nanosheets have received great attention of researchers due to their potential applications in biosensing, optoelectronics, photocatalysis, SERS, etc. Here, we report the enhanced optical and electrical properties of wide band gap MoS2 nanosheets when decorated with silver nanoparticles (Ag-MoS2 nanosheets). Field Emission Scanning Electron Spectroscopy (FESEM) images reveal the formation of well-shaped MoS2 nanosheet-like structures decorated with silver nanowires. MoS2 nanosheets are 27.9 µm long and 12.9 µm wide and the thickness is in the range of nanometer. X-ray diffraction (XRD) spectra show peaks at 25.46°, 33.79°, 36.28°, and 50.97° corresponding to (111), (100), (102), and (105) crystalline planes for pure MoS2 and at 47.26° and 78.28° corresponding to the (200) and (311) crystalline planes for silver in Ag- MoS2 nanosheets respectively. The UV-Vis absorption peak is observed at 340 nm for MoS2 but gets blue-shifted for Ag-MoS2 nanosheets. The calculated band gap is found to be 3.05eV for MoS2 nanosheet, so it falls under the category of wide band gap (2–4 eV) semiconductors which can have potential application in UV photodetection. From the photoluminescence spectra, we have observed enhanced emission for Ag-MoS2 in the range of 410–470 nm for the excitation wavelength 280 nm. Raman peak intensity of MoS2 nanosheet has increased significantly when decorated with Ag nanostructure which can have potential SERS application. I-V characteristic of Ag-MoS2 nanosheets under illumination exhibits negative photoconductivity but is positive for pristine MoS2 nanosheets.

show abstract

Liquid Phase Exfoliation and Microwave Assisted Modification in MoS2 Nanostructure

Cited by 2 publications

References 14 publications

Silver Nanoparticles Decorated Wide Band Gap MoS2 Nanosheet: Enhanced Optical and Electrical Properties

Silver Nanoparticles Decorated Wide Band Gap MoS2 Nanosheet: Enhanced Optical and Electrical Properties

Silver Nanoparticles Decorated Wide Band Gap MoS 2 Nanosheet: Enhanced Optical and Electrical Properties

Contact Info

Product

Resources

About