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Surface Assembly Strategy for the Fabrication of MoS2 Thin-Film Patterns

  • Gyuyeol Park
  • Hyun Soo Kim
  • Byung Yang LeeEmail author
Short Communication
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Abstract

Molybdenum disulfide (MoS2) is a novel material with remarkable properties that is widely investigated for future applications in electronics, sensors, and smart materials. In this respect, a low cost, easy process, large-area mass production process is needed to obtain diverse structures and surface patterns of MoS2. Here, we demonstrate an effective MoS2 patterning process using substrate surface modification that can solve the difficulties encountered in previous studies. This technique utilizes the sulfur vacancies introduced during chemical exfoliation of MoS2 flakes. The MoS2 patterning is performed via surface modification with thiol molecules on the substrate in pre-designed shapes. The thiol (–SH) group required to bond MoS2 to the surface-modified substrate using (3-mercaptopropyl)trimethoxysilane was confirmed by FT-IR and the patterned MoS2 was confirmed by Raman shift. Through this process, a gas sensor was fabricated and its feasibility was confirmed to show its applicability to various applications MoS2.

Keywords

Molybdenum disulfide Surface modification Thin-film patterning Sulfur defect 

Notes

Acknowledgements

This project was supported by the National Research Foundation (NRF) (2016M3A7B4909581, 2018R1A2B2006640) and the Global Frontier Project from the Center for Intergrated Smart Sensors(CISS-2011-0031866), funded by the Ministry of Science and ICT.

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Copyright information

© Korean Society for Precision Engineering 2019

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringKorea UniversitySeoulRepublic of Korea

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