Synthesis and Characterization of MoS2/WS2 Heterostructures by Second Harmonic Generation
Tipo
Artigo de evento
Data de publicação
2019
Periódico
2019 SBFoton International Optics and Photonics Conference, SBFoton IOPC 2019
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0
Autores
Vianna P.G.
Hamza Safeer S.
Ore A.S.M.V.
Gordo V.O.
Carvalho I.C.S.
Carozo V.
De Matos C.J.S.
Hamza Safeer S.
Ore A.S.M.V.
Gordo V.O.
Carvalho I.C.S.
Carozo V.
De Matos C.J.S.
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Resumo
© 2019 IEEE.Monolayers of MoS2 and WS2, as well as their vertical heterostructures, were synthesized via chemical vapor deposition. The samples were then characterized via microRaman and micro-photoluminescence spectroscopies, and by second harmonic generation (SHG). SHG confirms that the layers in bilayers and heterostructures grow with ~0o (or ~60o) relative twist angle. Interestingly, SHG is observed in MoS2 bilayers, indicating a deviation from the centrosymmetric 2H phase.
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Assuntos Scopus
Bi-layer , Centrosymmetric , Micro-Raman , Microphotoluminescence spectroscopy , Synthesis and characterizations , Transition metal dichalcogenides , Twist angles , Van der waals