All-Optical Reversible Manipulation of Exciton and Trion Emissions in Monolayer WS2

@article{Yang2019AllOpticalRM,
  title={All-Optical Reversible Manipulation of Exciton and Trion Emissions in Monolayer WS2},
  author={Chao-Wen Yang and Yan Gao and Chengbing Qin and Xilong Liang and Shuangping Han and Guofeng Zhang and Ruiyun Chen and Jianyong Hu and Liantuan Xiao and Suotang Jia},
  journal={Nanomaterials},
  year={2019},
  volume={10}
}
Monolayer transition metal dichalcogenides (TMDs) are direct gap semiconductors with promising applications in diverse optoelectronic devices. To improve devices’ performance, recent investigations have been systematically focused on the tuning of their optical properties. However, an all-optical approach with the reversible feature is still a challenge. Here we demonstrate the tunability of the photoluminescence (PL) properties of monolayer WS2 via laser irradiation. The broad-range and… 
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1Institute of Solid State Physics, Leibniz University Hannover, Appelstr. 2, D-30167 Hannover, Germany 2Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstr.
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