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説明:

We carried out femtosecond time-resolved photoluminescence measurements on monolayer MoS2 on a sapphire substrate. The charge density of the monolayer MoS2 was evaluated by spectroscopic analysis. Time evolutions of exciton and trion luminescence in the femto- and picosecond region were obtained. The rate-equation analysis provided the time constant of exciton relaxation to trion, i.e., trion formation. This time constant was compared with those of other two-dimensional electron systems and is discussed in terms of two dimensionality defined by thickness. This study advances the understanding of exciton physics in low-dimensional systems.

権利情報:

• In Copyright
  

キーワード: 2D materials, Optical Physics, Trions, Time-resolved spectroscopy

刊行年月日: 2024-12-11

出版者: American Physical Society (APS)

掲載誌:

• Physical Review B (ISSN: 1550235X) vol. 110 issue. 23 235412

研究助成金:

• Japan Society for the Promotion of Science JP26107520
• Japan Society for the Promotion of Science JP16H00908
• Japan Society for the Promotion of Science JP24K06917

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5159

公開URL: https://doi.org/10.1103/physrevb.110.235412

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更新時刻: 2024-12-16 16:30:59 +0900

MDRでの公開時刻: 2024-12-16 16:30:59 +0900