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Jumiati Wu, Hai Li, Zongyou Yin, Hong Li, Juqing Liu, Xiehong Cao, Qing Zhang and Hua Zhang Layer Thinning and Etching of Mechanically Exfoliated MoS2 Nanosheets by Thermal Annealing in Air Small 9

Article first published online: 28 AUG 2013 | DOI: 10.1002/smll.201301542

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A simple and low-cost MoS2 layer thinning method is developed. Double-layer (2L) to quadri-layer (4L) MoS2 nanosheets have been successfully thinned to single-layer (1L) MoS2 by thermal annealing in air, which show comparable properties with the pristine 1L MoS2 nanosheet. MoS2 mesh with high-density of triangular pits by thermal annealing in air is reported for the first time. The existence of MoO3 fragments on MoS2 nanosheet surface induces the hole injection, resulting in p-type MoS2 FET channel.

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