Influence of embedded NiO-nanoparticles on the nonlinear absorption of tungsten disulfide nanolayers

Konda, Srinivasa Rao; Rajan, Rahul A.; Singh, Subhash; Ganeev, R. A.; Soma, Venugopal Rao; Srivastava, Alka; Venkatesh, M.; Chen, Guo; Li, Wei

doi:10.1016/j.optmat.2023.113657

Cited by 4 publications

(1 citation statement)

References 55 publications

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“…Earlier, several research groups rigorously used the Tauc plots from UV-vis absorption spectra to assess the direct and indirect band gaps of the materials. 23 , 37 , 38 , 39 The absorption coefficients (α)and the corresponding band gap energies ( E g ) of the samples are connected by

where h signifies Planck’s constant, ν denotes photon frequency, and A is a constant. The value of exponent n denotes the type of electronic transition in the material.…”

Section: Resultsmentioning

confidence: 99%

Outstanding nonlinear optical properties of all-inorganic perovskite CsPbX3 (X=Cl, Br, I) precursor solutions and polycrystalline films

Fu,

Konda,

Ganeev

et al. 2023

iScience

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where h signifies Planck’s constant, ν denotes photon frequency, and A is a constant. The value of exponent n denotes the type of electronic transition in the material.…”

Section: Resultsmentioning

confidence: 99%

Outstanding nonlinear optical properties of all-inorganic perovskite CsPbX3 (X=Cl, Br, I) precursor solutions and polycrystalline films

Fu,

Konda,

Ganeev

et al. 2023

iScience

Self Cite

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Enhanced Femtosecond Nonlinear Optical Susceptibility and Terahertz Conductivity in MoSe₂‐Noble Metal Nanocomposites

Mondal,

Haldar,

Pramanik

et al. 2024

Advanced Optical Materials

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Creating heterojunctions or composites by incorporating noble metals offers a remarkable means to modulate the electronic charge transfer and the nonlinear optical (NLO) properties in 2D transition metal dichalcogenides (TMDCs). The response of such 2D‐TMDC‐noble metal composites to femtosecond (fs) infrared (IR) and terahertz (THz) radiation, however, remains vastly unexplored. While the linear optical characteristics of a prototypical 2D‐TMDC, namely, MoSe2 nanosheets incorporated with noble metal (such as Au, Pt, and Ag) nanoparticles in the UV–Vis and the THz spectral range, the NLO characteristics are measured using a 70‐fs pulse at 800 nm excitation is investigated. The results demonstrate a clear reduction of band gap with the incorporation of noble metals in MoSe2, indicating an effective charge transfer mechanism at play. Notably, the MoSe2‐noble metal nanocomposites depicted a significant enhancement in the THz conductivities. In addition, a dramatic 4‐fold enhancement in the third‐order nonlinear coefficient and ≈2‐fold enhancement in the third‐order NLO susceptibility is achieved in MoSe2‐Ag nanocomposite. These results univocally suggest that the noble metal‐based composites with suitable charge transfer channels promote enhanced carrier mobilities and tunable electron transfer dynamics, making these hybrid materials promising candidates for optoelectronic applications both at IR and THz frequencies.

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Polarization-dependent ultrafast optical nonlinearities of N,N-dimethylformamide at 400 nm

Zhao,

Xue,

Liu

et al. 2023

Optoelectron. Lett.

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Influence of embedded NiO-nanoparticles on the nonlinear absorption of tungsten disulfide nanolayers

Cited by 4 publications

References 55 publications

Outstanding nonlinear optical properties of all-inorganic perovskite CsPbX3 (X=Cl, Br, I) precursor solutions and polycrystalline films

Outstanding nonlinear optical properties of all-inorganic perovskite CsPbX3 (X=Cl, Br, I) precursor solutions and polycrystalline films

Enhanced Femtosecond Nonlinear Optical Susceptibility and Terahertz Conductivity in MoSe₂‐Noble Metal Nanocomposites

Polarization-dependent ultrafast optical nonlinearities of N,N-dimethylformamide at 400 nm

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Influence of embedded NiO-nanoparticles on the nonlinear absorption of tungsten disulfide nanolayers

Cited by 4 publications

References 55 publications

Outstanding nonlinear optical properties of all-inorganic perovskite CsPbX3 (X=Cl, Br, I) precursor solutions and polycrystalline films

Outstanding nonlinear optical properties of all-inorganic perovskite CsPbX3 (X=Cl, Br, I) precursor solutions and polycrystalline films

Enhanced Femtosecond Nonlinear Optical Susceptibility and Terahertz Conductivity in MoSe2‐Noble Metal Nanocomposites

Polarization-dependent ultrafast optical nonlinearities of N,N-dimethylformamide at 400 nm

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Enhanced Femtosecond Nonlinear Optical Susceptibility and Terahertz Conductivity in MoSe₂‐Noble Metal Nanocomposites