Tunable band gap photoluminescence from atomically thin transition-metal dichalcogenide alloys.

@article{Chen2013TunableBG,
  title={Tunable band gap photoluminescence from atomically thin transition-metal dichalcogenide alloys.},
  author={Yanfeng Chen and Jinyang Xi and Dumitru Dumcenco and Zheng Liu and Kazu Suenaga and Dong Wang and Zhigang Shuai and Ying-Sheng Huang and Liming Xie},
  journal={ACS nano},
  year={2013},
  volume={7 5},
  pages={4610-6}
}
Band gap engineering of atomically thin two-dimensional (2D) materials is the key to their applications in nanoelectronics, optoelectronics, and photonics. Here, for the first time, we demonstrate that in the 2D system, by alloying two materials with different band gaps (MoS2 and WS2), tunable band gap can be obtained in the 2D alloys (Mo(1-x)W(x)S(2) monolayers, x = 0-1). Atomic-resolution scanning transmission electron microscopy has revealed random arrangement of Mo and W atoms in the Mo(1-x… CONTINUE READING
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