Grains in Selectively Grown MoS2 Thin Films

Hyung Jun Kim, Hojoong Kim, Suk Yang, Jang Yeon Kwon

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

Transition metal dichalcogenides (TMDCs) have recently been studied using various synthesis methods, such as chemical vapor deposition for large-scale production. Despite the realization of large-scale production with high material quality, a range of approaches have been made to solve the patterning issue of TMDCs focusing on the application of integrated devices; however, patterning is still under study to accurately represent nanoscale-sized patterns, as well as the desired positions and shapes. Here, an insulating substrate is treated selectively with O2 plasma, and MoS2 growth is induced in the superhydrophilic area. Selectively well-grown MoS2 patterns are confirmed by atomic force microscopy and Raman and photoluminescence spectroscopy. In addition, the grain size, according to the growth size, and grain boundary are analyzed by annual dark field transmission electron microscopy (TEM) and spherical aberration-corrected scanning TEM to confirm the selective growth. An analysis of the device performance and the optical properties reveals an enhancement with increasing grain size. This method presents the path of the growth technique for patterning, as well as the direction that can be applied to devices and integrated circuits.

Original languageEnglish
Article number1702256
JournalSmall
Volume13
Issue number46
DOIs
Publication statusPublished - 2017 Dec 13

Bibliographical note

Funding Information:
This research was supported by the MSIT(Ministry of Science and ICT), Korea, under the ICT Consilience Creative program(IITP-2017-2017-0-01015) supervised by the IITP (Institute for Information & Communications Technology Promotion).

Publisher Copyright:
© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Biomaterials
  • Chemistry(all)
  • Materials Science(all)

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