2021年9月13日
Radiative lifetime and dynamics of trions in few-layered ReS2
Applied Physics Letters
- ,
- ,
- 巻
- 119
- 号
- 11
- 開始ページ
- 113103
- 終了ページ
- 113103
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1063/5.0059198
- 出版者・発行元
- AIP Publishing
Few-layered ReS2 with anisotropic electrical and optical properties has attracted much attention in the research field of two-dimensional (2D) materials. Recently, a stable charged exciton (trion) composed of bound states of two electrons and a hole with large binding energy has been experimentally observed in a few-layered ReS2. However, the dynamics of stable trions remain unclear. We studied the excited-state dynamics, including the radiative lifetime of the negative trion in three layer (3L)-ReS2 via temperature-dependent photoluminescence spectroscopy and phenomenological rate-equation analysis. The derived radiative lifetime of the trion increases linearly with increasing temperature, reaching a few nanoseconds at a high temperature of 150 K; this observation implies that the experimentally observed negative trion in 3L-ReS2 lies in the optically allowed state. Our results provide significant insights into the physics of excitonic states in 2D materials. Published under an exclusive license by AIP Publishing.
- リンク情報
- ID情報
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- DOI : 10.1063/5.0059198
- ISSN : 0003-6951
- eISSN : 1077-3118
- Web of Science ID : WOS:000724314700006