Luminescent monolayer MoS2 quantum dots produced by multi-exfoliation based on lithium intercalation

- A new preparation, multi-exfoliation method based on lithium (Li) intercalation, has been demonstrated for preparing monolayer molybdenum disulfide (MoS2) quantum dots (QDs).
- The advantage of this approach is that it is capable of producing monolayer MoS2 QDs in a large number, regardless of whether the raw material is bulk or nanoparticles.
- The PL intensity excited at 300 nm can be enhanced by five times after ultrasonicated heating treatment.