Journal of the Korean Physical Society

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J. Korean Phys. Soc. 2020; 76(11): 980-984

Published online June 15, 2020     https://doi.org/10.3938/jkps.76.980

Copyright © The Korean Physical Society.

Effects of the Intercalant and the Temperature in Hybrid-MoS2 Nanodots Fabrication and Their Photoluminescence Enhancement

Adila Rani1, Eun-Young Kim1, Da Som Song2, JongSun Lim2, Sang Don Bu1,3

1Department of Physics, Research Institute of Physics and Chemistry, Jeonbuk National University, Jeonju 54896, Korea
2Thin Film Materials Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Korea
3Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States

Correspondence to:Sang Don Bu

Abstract

(a) Synthesis of different sizes of hybrid MoS2 NDTs using hydrothermal method by the incorporation of KNa-tartrate as an intercalant. (b) Mechanism of the hybrid NDTs showing dissociation of intercalant into carbon nanodots and edges of MoS2 is broken into small sizes; resulting carbon and oxygen from intercalant bonded with the Mo species to produced hybrid structure of MoS2 nanodots. (c) Enhancement of magnitude and red shifting in photoluminescence spectra. (d) MoS2 NDTs solution (2.45nm average size) exhibits a blue fluorescence under the irradiation by a 365 nm UV light, further XPS reveals the Mo-C bond formation in hybrid NDTs.

Keywords: 2D-based nanomaterials, Solvothermal process, MoS2 nanodots, PL enhancement, Temperature-dependent particle size

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