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Correlation of grain orientations and the thickness of gradient MoS₂ films.

ABSTRACT: In this study, we synthesized gradient MoS₂ films with a home-made suspended mask and characterized them by transmission electron microscopy (TEM) and Raman spectroscopy. The advantage of using gradient films is to simultaneously produce numerous samples under the same growth condition but with different thicknesses. The cross-sectional TEM images and their Fourier transform spectra revealed the thickness dependency of the grain orientations for synthetic MoS₂ films. Combining the TEM results and the data of Raman A_1g and E¹ _2g peaks, we found the correlation between the grain orientation and the A_1g/E¹ _2g peak area ratio. We demonstrated the potential of using the non-polarized Raman Spectroscopy to characterize the grain structures of synthetic MoS₂ films.

SUBMITTER: Chang HP

PROVIDER: S-EPMC9042331 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature

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Correlation of grain orientations and the thickness of gradient MoS2 films.

Chang Hui-Ping HP Hofmann Mario M Hsieh Ya-Ping YP Chen You-Sheng YS Lin Jauyn Grace JG

RSC advances 20211022 54

In this study, we synthesized gradient MoS2 films with a home-made suspended mask and characterized them by transmission electron microscopy (TEM) and Raman spectroscopy. The advantage of using gradient films is to simultaneously produce numerous samples under the same growth condition but with different thicknesses. The cross-sectional TEM images and their Fourier transform spectra revealed the thickness dependency of the grain orientations for synthetic MoS2 films. Combin ...[more]

PMID: 35497272

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