Controlling relaxation dynamics of excitonic states in monolayer transition metal dichalcogenides WS2 through interface engineering

  title={Controlling relaxation dynamics of excitonic states in monolayer transition metal dichalcogenides WS2 through interface engineering},
  author={Anran Wang and Yuhan Wang and Jianfei Li and Ningan Xu and Songlin Li and Xinran Wang and Yi Shi and Fengqiu Wang},
  journal={Applied Physics Letters},
Transition metal dichalcogenides (TMDs) are known to support complex excitonic states. Revealing the differences in relaxation dynamics among different excitonic species and elucidating the transition dynamics between them may provide important guidelines for designing novel excitonic devices. Combining photoluminescence and reflectance contrast measurements with ultrafast pump-probe spectroscopy at cryogenic temperatures, we herein study the relaxation dynamics of neutral and charged excitons… 

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