Visualization of environment-dependent carrier dynamics on 2D transition metal dichalcogenides using ultrafast pump-probe microscopy

Chih Wei Luo*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Recently, the great economic and environmental interest for the production of the clean fuel hydrogen through water splitting is worldwide promoted, practically using 2D transition metal dichalcogenides (TMDs), e.g., MoS2. In this study, we investigated the ultrafast carrier dynamics of MoS2 in air and liquid. Moreover, we also in situ probed the ultrafast carrier dynamics at 2D atomic layer MoS2/liquid electrolyte interface for hydrogen evolution reaction (HER). The several-picoseconds relaxation component in transient transmittance changes (Delta T/T) has been identified to indicate the catalytic activation time and shows the distribution of activation sites during HER.

Original languageEnglish
Title of host publication2022 IEEE Photonics Conference, IPC 2022 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665434874
DOIs
StatePublished - 2022
Event2022 IEEE Photonics Conference, IPC 2022 - Vancouver, Canada
Duration: 13 Nov 202217 Nov 2022

Publication series

Name2022 IEEE Photonics Conference, IPC 2022 - Proceedings

Conference

Conference2022 IEEE Photonics Conference, IPC 2022
Country/TerritoryCanada
CityVancouver
Period13/11/2217/11/22

Keywords

  • HER
  • catalyst
  • hydrogen evolution reaction
  • transient transmittance changes
  • ultrafast carrier dynamics

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