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Atomic‐Level Customization of 4 in. Transition Metal Dichalcogenide Multilayer Alloys for Industrial Applications
Author(s) -
Lim Yi Rang,
Han Jin Kyu,
Yoon Yeoheung,
Lee JaeBok,
Jeon Cheolho,
Choi Min,
Chang Hyunju,
Park Noejung,
Kim Jung Hwa,
Lee Zonghoon,
Song Wooseok,
Myung Sung,
Lee Sun Sook,
An KiSeok,
Ahn JongHyun,
Lim Jongsun
Publication year - 2019
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201901405
Subject(s) - materials science , ternary operation , alloy , transition metal , bismuth , atomic units , optoelectronics , catalysis , nanotechnology , metallurgy , computer science , biochemistry , chemistry , physics , quantum mechanics , programming language
Despite many encouraging properties of transition metal dichalcogenides (TMDs), a central challenge in the realm of industrial applications based on TMD materials is to connect the large‐scale synthesis and reproducible production of highly crystalline TMD materials. Here, the primary aim is to resolve simultaneously the two inversely related issues through the synthesis of MoS 2(1− x ) Se 2 x ternary alloys with customizable bichalcogen atomic (S and Se) ratio via atomic‐level substitution combined with a solution‐based large‐area compatible approach. The relative concentration of bichalcogen atoms in the 2D alloy can be effectively modulated by altering the selenization temperature, resulting in 4 in. scale production of MoS 1.62 Se 0.38 , MoS 1.37 Se 0.63 , MoS 1.15 Se 0.85 , and MoS 0.46 Se 1.54 alloys, as well as MoS 2 and MoSe 2 . Comprehensive spectroscopic evaluations for vertical and lateral homogeneity in terms of heteroatom distribution in the large‐scale 2D TMD alloys are implemented. Se‐stimulated strain effects and a detailed mechanism for the Se substitution in the MoS 2 crystal are further explored. Finally, the capability of the 2D alloy for industrial application in nanophotonic devices and hydrogen evolution reaction (HER) catalysts is validated. Substantial enhancements in the optoelectronic and HER performances of the 2D ternary alloy compared with those of its binary counterparts, including pure‐phase MoS 2 and MoSe 2 , are unambiguously achieved.