Growth of Large-Area and Highly Crystalline MoS2 Thin Layers on Insulating Substrates

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Keng-Ku Liu
  • Wenjing Zhang
  • Yi-Hsien Lee
  • Yu-Chuan Lin
  • Mu-Tung Chang
  • Ching-Yuan Su
  • Chia-Seng Chang
  • Hai Li
  • Yumeng Shi
  • Chao-Sung Lai
  • Lain-Jong Li

Detail(s)

Original languageEnglish
Pages (from-to)1538-1544
Journal / PublicationNano Letters
Volume12
Issue number3
Online published27 Feb 2012
Publication statusPublished - 14 Mar 2012
Externally publishedYes

Abstract

The two-dimensional layer of molybdenum disulfide (MoS2) has recently attracted much interest due to its direct-gap property and potential applications in optoelectronics and energy harvesting. However, the synthetic approach to obtain high-quality and large-area MoS2 atomic thin layers is still rare. Here we report that the high-temperature annealing of a thermally decomposed ammonium thiomolybdate layer in the presence of sulfur can produce large-area MoS2 thin layers with superior electrical performance on insulating substrates. Spectroscopic and microscopic results reveal that the synthesized MoS2 sheets are highly crystalline. The electron mobility of the bottom-gate transistor devices made of the synthesized MoS2 layer is comparable with those of the micromechanically exfoliated thin sheets from MoS2 crystals. This synthetic approach is simple, scalable, and applicable to other transition metal dichalcogenides. Meanwhile, the obtained MoS2 films are transferable to arbitrary substrates, providing great opportunities to make layered composites by stacking various atomically thin layers. © 2012 American Chemical Society.

Research Area(s)

  • layered materials, molybdenum disulfide, semiconductors, transistors, Transition metal dichalcogenides, two-dimensional materials

Citation Format(s)

Growth of Large-Area and Highly Crystalline MoS2 Thin Layers on Insulating Substrates. / Liu, Keng-Ku; Zhang, Wenjing; Lee, Yi-Hsien; Lin, Yu-Chuan; Chang, Mu-Tung; Su, Ching-Yuan; Chang, Chia-Seng; Li, Hai; Shi, Yumeng; Zhang, Hua; Lai, Chao-Sung; Li, Lain-Jong.

In: Nano Letters, Vol. 12, No. 3, 14.03.2012, p. 1538-1544.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review