Facile preparation of molybdenum disulfide quantum dots using a femtosecond laser

Sung Jin An, Dae Young Park, Chanwoo Lee, Seungho Bang, Duc Anh Nguyen, Sung Hyuk Kim, Ho Young Kim, Hee Jin Jeong, Mun Seok Jeong

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Molybdenum disulfide (MoS2) is rapidly emerging in a wide range of applications owing to its superior optical, electrical, and catalytic properties. In particular, aside from the current great interest in monolayer MoS2, MoS2 quantum dots (QDs) have received much attention in the electronics and optoelectronics fields owing to their inherent electrical and optical properties arising from the quantum confinement effect. Thus, various methods for producing MoS2 QDs, such as exfoliation, substrate growth, and colloidal synthesis, have been attempted. In this study, the method for manufacturing MoS2 QD with a size of 10 nm which is simpler than the conventional method was devised. On the basis of characterization of the prepared MoS2 QD samples, resistive switching devices was fabricated. These devices demonstrated stable unipolar resistive switching behavior without an electroforming process. This study provides a new approach for the mass production of MoS2 QD and one of their potential applications.

Original languageEnglish
Article number145507
JournalApplied Surface Science
Volume511
DOIs
StatePublished - 1 May 2020

Keywords

  • Exfoliation
  • Memristor
  • MoS
  • Phase transition
  • Quantum confinement effect

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