Optical Diagnostics of WSe 2  Monolayers

K. A. Brekhov; K. A. Grishunin; N. A. Ilyin; A. P. Shestakova; S. D. Lavrov; E. D. Mishina

doi:10.1134/S106378501712015X

Optical Diagnostics of WSe₂ Monolayers

作者: Brekhov K.A.¹, Grishunin K.A.¹, Ilyin N.A.¹, Shestakova A.P.¹, Lavrov S.D.¹, Mishina E.D.¹
隶属关系:
1. Moscow Technological University
期: 卷 43, 编号 12 (2017)
页面: 1112-1114
栏目: Article
URL: https://bakhtiniada.ru/1063-7850/article/view/206863
DOI: https://doi.org/10.1134/S106378501712015X
ID: 206863

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WSe₂ films have been studied by the method of second harmonic generation (SHG) in the 1200–1420 nm wavelength range at room temperature. Preliminary investigations of photoluminescence spectra and atomic force microscopy showed that the film consists of extended microcrystals and has a thickness of about 1 nm, which corresponds to a single monolayer. The SHG intensity spectrum showed the presence of a 1s (B)-exciton for 1.95-eV photon energy.