Pressure manipulation of exciton dynamics in few-layered MoS<sub>2</sub>

Li, Q; Sui, Laizhi; Jiang, Ying; Chen, A; Jin, Wen; Liu, H; Yuan, Kaijun; Mu, Jin

doi:10.1088/1742-6596/1412/13/132042

Cited by 1 publication

(1 citation statement)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As the interlayer distance is decreased during compression by the hydrostatic pressure, the weak vdW interlayer interactions are monotonically enhanced, and the corresponding ultrafast carrier relaxation dynamics of hot carrier cooling and exciton dissociation are found to get faster simultaneously. Observed data demonstrated that pressure can manipulate exciton behavior in 2D materials [79,80]. In figure 6(a), the TA spectra shows two negative peaks labeled as A and B, which corresponds to the bleaching peaks of the A and B excitons.…”

Section: Two-dimensional (2d) Materialsmentioning

confidence: 93%

Ultrafast dynamics under high-pressure

Pan

et al. 2023

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

High-pressure is a mechanical method to regulate the structure and internal interaction of materials. Therefore, observation of properties’ change can be realized in a relatively pure environment. Furthermore, high-pressure affects the delocalization of wavefunction among materials’ atoms and thus their dynamics process. Dynamics results are essential data for understanding the physical and chemical characteristics, which is valuable for materials application and development. Ultrafast spectroscopy is a powerful tool to investigate dynamics process and becoming a necessary characterization method for materials investigation. The combination of high-pressure with ultrafast spectroscopy in the nanocosecond~femtosecond scale enables us to investigate the influence of the enhanced interaction between particles on the physical and chemical properties of materials, such as energy transfer, charge transfer, Auger recombination, etc. Base on this point of view, this review summarizes recent progress in the ultrafast dynamics under high-pressure for various materials, in which new phenomena and new mechanisms are observed.In this review, we describe in detail the principles of in situ high pressure ultrafast dynamics probing technology and its field of application. On this basis, the progress of the study of dynamic processes under high-pressure in different material systems is summarized. An outlook on in situ high-pressure ultrafast dynamics research is also provided.

show abstract

Section: Two-dimensional (2d) Materialsmentioning

confidence: 93%