Colossal switchable photocurrents in topological Janus transition metal dichalcogenides

  title={Colossal switchable photocurrents in topological Janus transition metal dichalcogenides},
  author={Haowei Xu and Hua Wang and Jian Zhou and Yunfan Guo and Jing Kong and Ju Li},
  journal={npj Computational Materials},
  • Haowei Xu, Hua Wang, Ju Li
  • Published 18 February 2021
  • Materials Science, Physics
  • npj Computational Materials
Nonlinear optical properties, such as bulk photovoltaic effects, possess great potential in energy harvesting, photodetection, rectification, etc. To enable efficient light–current conversion, materials with strong photo-responsivity are highly desirable. In this work, we predict that monolayer Janus transition metal dichalcogenides (JTMDs) in the 1T′ phase possess colossal nonlinear photoconductivity owing to their topological band mixing, strong inversion symmetry breaking, and small… 

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