Impact of CVD chemistry on band alignment at the MoS2/SiO2 interface

Tummala, P.P.; Delie, G.; Cataldo, A.; Ghomi, S.; Martella, C.; Ferrini, G.; Molle, A.; Lamperti, A.; Afanas'ev, V.V.

doi:10.1016/j.sse.2023.108782

Cited by 5 publications

(2 citation statements)

References 14 publications

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“…If the fitting in both probing cases is not possible, this indicates the need to modify the model, e.g., due to the formation of interface charges or dipoles from the synthesis process. 34 To extract the variation of the optical parameters of thin films on transparent substrates induced by a short pump pulse, we start by describing how the variation of the optical conductivity, σ̂= σ 1 + iσ 2 (or equivalently of the permittivity, ϵ= ϵ 1 + iϵ 2 or the refractive index n̂= n + ik) affects the probe reflection and transmission (see Supporting Information, section 1, for a discussion and definition of n, ϵ, and σ̂for 2D materials). Modeling this structure is necessary to obtain quantitative data from the measurements.…”

Section: Monatomic Layersmentioning

confidence: 99%

“…The simultaneous fitting of reflection and transmission in both probing cases with the same optical parameters is an indication of the robustness of the model and its ability to represent the actual substrate–film condition. If the fitting in both probing cases is not possible, this indicates the need to modify the model, e.g., due to the formation of interface charges or dipoles from the synthesis process …”

Section: Pump and Probe Microscopy On Monatomic Layersmentioning

confidence: 99%

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Optical Time-Resolved Microscopy on Few-Atoms-Thick Materials

Mermoul,

Ruzankina,

Giannetti

et al. 2024

J. Phys. Chem. C

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In the past decade, the emergence of ultrathin 2D films consisting of only a few atomic layers deposited on various substrates sparked new ideas and research. This Perspective provides a nonexhaustive review of utilizing ultrafast optical pump−probe microscopy and the models for fitting experimental data that emerged in the past few years. We will focus on retrieving optically induced modifications of material parameters from pump−probe data on 2D materials, involving the inversion of Maxwell's equations and discussing new methods to localize optical interactions to capture the response of 2D films with increased resolution and sensitivity. These areas represent promising avenues for advancing our understanding of the dynamic behavior of ultrathin 2D films and their response to ultrafast optically induced transients.

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Section: Monatomic Layersmentioning

confidence: 99%

Section: Pump and Probe Microscopy On Monatomic Layersmentioning

confidence: 99%