Electron Irradiation Effects on Single-Layer MoS2 Obtained by Gold-Assisted Exfoliation

Salvatore Ethan Panasci; Antonino Alessi; Gianpiero Buscarino; Marco Cannas; Franco Mario Gelardi; Emanuela Schilirò; Filippo Giannazzo; Simonpietro Agnello

doi:10.1002/pssa.202200096

Electron Irradiation Effects on Single-Layer MoS₂ Obtained by Gold-Assisted Exfoliation

Salvatore Ethan Panasci
, Antonino Alessi
, Gianpiero Buscarino
, Marco Cannas
, Franco Mario Gelardi
, Emanuela Schilirò
, Filippo Giannazzo
, Simonpietro Agnello

Research output: Contribution to journal › Article › peer-review

Abstract

Mechanical exfoliation assisted by gold is applied to obtain good quality large lateral size single-layer MoS₂. The effects of 2.5 MeV electron irradiation are investigated at room temperature on structural and electronic features by Raman and microluminescence spectroscopy. The exciton recombination emission in the direct bandgap of single-layer MoS₂ is affected during irradiation starting from the minimum explored dose of 1 kGy. At higher doses, Raman bands show no relevant modifications whereas the exciton emission is quenched, suggesting that irradiation-induced point defects affect exciton dynamics.

Original language	English
Article number	2200096
Journal	Physica Status Solidi (A) Applications and Materials Science
Volume	219
Issue number	21
DOIs	https://doi.org/10.1002/pssa.202200096
Publication status	Published - 1 Nov 2022

Keywords

MoS
Raman spectra
electron irradiation
excitons
gold-assisted exfoliation
irradiation effects
single layers

Access to Document

10.1002/pssa.202200096

Cite this

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title = "Electron Irradiation Effects on Single-Layer MoS2 Obtained by Gold-Assisted Exfoliation",

abstract = "Mechanical exfoliation assisted by gold is applied to obtain good quality large lateral size single-layer MoS2. The effects of 2.5 MeV electron irradiation are investigated at room temperature on structural and electronic features by Raman and microluminescence spectroscopy. The exciton recombination emission in the direct bandgap of single-layer MoS2 is affected during irradiation starting from the minimum explored dose of 1 kGy. At higher doses, Raman bands show no relevant modifications whereas the exciton emission is quenched, suggesting that irradiation-induced point defects affect exciton dynamics.",

keywords = "MoS, Raman spectra, electron irradiation, excitons, gold-assisted exfoliation, irradiation effects, single layers",

author = "Panasci, \{Salvatore Ethan\} and Antonino Alessi and Gianpiero Buscarino and Marco Cannas and Gelardi, \{Franco Mario\} and Emanuela Schilir{\`o} and Filippo Giannazzo and Simonpietro Agnello",

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doi = "10.1002/pssa.202200096",

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T1 - Electron Irradiation Effects on Single-Layer MoS2 Obtained by Gold-Assisted Exfoliation

AU - Panasci, Salvatore Ethan

AU - Alessi, Antonino

AU - Buscarino, Gianpiero

AU - Cannas, Marco

AU - Gelardi, Franco Mario

AU - Schilirò, Emanuela

AU - Giannazzo, Filippo

AU - Agnello, Simonpietro

PY - 2022/11/1

Y1 - 2022/11/1

N2 - Mechanical exfoliation assisted by gold is applied to obtain good quality large lateral size single-layer MoS2. The effects of 2.5 MeV electron irradiation are investigated at room temperature on structural and electronic features by Raman and microluminescence spectroscopy. The exciton recombination emission in the direct bandgap of single-layer MoS2 is affected during irradiation starting from the minimum explored dose of 1 kGy. At higher doses, Raman bands show no relevant modifications whereas the exciton emission is quenched, suggesting that irradiation-induced point defects affect exciton dynamics.

AB - Mechanical exfoliation assisted by gold is applied to obtain good quality large lateral size single-layer MoS2. The effects of 2.5 MeV electron irradiation are investigated at room temperature on structural and electronic features by Raman and microluminescence spectroscopy. The exciton recombination emission in the direct bandgap of single-layer MoS2 is affected during irradiation starting from the minimum explored dose of 1 kGy. At higher doses, Raman bands show no relevant modifications whereas the exciton emission is quenched, suggesting that irradiation-induced point defects affect exciton dynamics.

KW - MoS

KW - Raman spectra

KW - electron irradiation

KW - excitons

KW - gold-assisted exfoliation

KW - irradiation effects

KW - single layers

U2 - 10.1002/pssa.202200096

DO - 10.1002/pssa.202200096

M3 - Article

AN - SCOPUS:85135822666

SN - 1862-6300

VL - 219

JO - Physica Status Solidi (A) Applications and Materials Science

JF - Physica Status Solidi (A) Applications and Materials Science

IS - 21

M1 - 2200096