Spectromicroscopic insights into oxidation of large-scale molybdenum disulfide and its relation to photoelectric properties

Yeong Min Kwon; Yi Rang Lim; Garam Bae; Da Som Song; Hyeong-ku Jo; Se Yeon Park; Moonjeong Jang; Soonmin Yim; Sung Myung; Jongsun Lim; Sun Sook Lee; Wooseok Song

doi:10.1117/12.2683557

5 October 2023 Spectromicroscopic insights into oxidation of large-scale molybdenum disulfide and its relation to photoelectric properties

Yeong Min Kwon, Yi Rang Lim, Garam Bae, Da Som Song, Hyeong-ku Jo, Se Yeon Park, Moonjeong Jang, Soonmin Yim, Sung Myung, Jongsun Lim, Sun Sook Lee, Wooseok Song

Author Affiliations +

Proceedings Volume PC12651, Low-Dimensional Materials and Devices 2023; PC126510X (2023) https://doi.org/10.1117/12.2683557
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States

Conference Poster

Abstract

Despite the encouraging inherent properties of and research progress on two-dimensional (2D) MoS2, an ongoing issue associated with oxidative instability remains unsolved for practical optoelectronic applications. Thus, in-depth understanding of the oxidation behavior of large-scale and homogeneous 2D MoS2 is imperative. In this study, the structural and chemical transformations of large-area MoS2 multilayers were investigated by air-annealing at various temperatures and times by performing Raman spectroscopy, X-ray photoelectron spectroscopy, and atomic force microscopy. The results explicitly indicate the temperature- and time-dependent oxidation effects: heat-driven elimination of redundant residues, internal strain stimulated by the formation of Mo–O bonds, deterioration of the MoS2 crystallinity, layer thinning, and morphological transformation from 2D MoS2 layers into particles. Photoelectrical characterization of the air-annealed MoS2 was implemented to capture the link between the oxidation behavior of large-scale MoS2 multilayers and their photoelectrical properties.

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Yeong Min Kwon, Yi Rang Lim, Garam Bae, Da Som Song, Hyeong-ku Jo, Se Yeon Park, Moonjeong Jang, Soonmin Yim, Sung Myung, Jongsun Lim, Sun Sook Lee, and Wooseok Song "Spectromicroscopic insights into oxidation of large-scale molybdenum disulfide and its relation to photoelectric properties", Proc. SPIE PC12651, Low-Dimensional Materials and Devices 2023, PC126510X (5 October 2023); https://doi.org/10.1117/12.2683557

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