Synthesis Methods of Two-Dimensional MoS2: A Brief Review
Review article, 2017

Molybdenum disulfide (MoS2) is one of the most important two-dimensional materials after graphene. Monolayer MoS2 has a direct bandgap (1.9 eV) and is potentially suitable for post-silicon electronics. Among all atomically thin semiconductors, MoS2's synthesis techniques are more developed. Here, we review the recent developments in the synthesis of hexagonal MoS2, where they are categorized into top-down and bottom-up approaches. Micromechanical exfoliation is convenient for beginners and basic research. Liquid phase exfoliation and solutions for chemical processes are cheap and suitable for large-scale production; yielding materials mostly in powders with different shapes, sizes and layer numbers. MoS2 films on a substrate targeting high-end nanoelectronic applications can be produced by chemical vapor deposition, compatible with the semiconductor industry. Usually, metal catalysts are unnecessary. Unlike graphene, the transfer of atomic layers is omitted. We especially emphasize the recent advances in metalorganic chemical vapor deposition and atomic layer deposition, where gaseous precursors are used. These processes grow MoS2 with the smallest building-blocks, naturally promising higher quality and controllability. Most likely, this will be an important direction in the field. Nevertheless, today none of those methods reproducibly produces MoS2 with competitive quality. There is a long way to go for MoS2 in real-life electronic device applications.

micromechanical

transition metal dichalcogenide

Molybdenum disulfide

two-dimensional materials

Author

Jie Sun

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

X. J. Li

Beijing University of Technology

W. L. Guo

Beijing University of Technology

M. Zhao

Chinese Academy of Sciences

X. Fan

Beijing University of Technology

Y. B. Dong

Beijing University of Technology

C. Xu

Beijing University of Technology

J. Deng

Beijing University of Technology

Yifeng Fu

Chalmers, Microtechnology and Nanoscience (MC2), Electronics Material and Systems Laboratory

Crystals

2073-4352 (ISSN)

Vol. 7 7 Article no 198 -

Subject Categories

Nano Technology

DOI

10.3390/cryst7070198

More information

Latest update

7/4/2021 2