Mid-infrared polarized emission from black phosphorus light-emitting diodes.

  title={Mid-infrared polarized emission from black phosphorus light-emitting diodes.},
  author={Junjia Wang and Adrien Rousseau and Meijun Yang and Tony Low and S 'ebastien Francoeur and St'ephane K'ena-Cohen},
  journal={Nano letters},
We demonstrate a mid-infrared light-emitting diode based on the 2D semiconductor black phosphorus (BP). The device is composed of a mechanically exfoliated BP/molybdenum disulfide heterojunction. Under forward bias, it emits polarized electroluminescence at λ = 3.68 μm, with room-temperature internal and external quantum efficiencies of ~1% and ~0.03%, respectively. In our structure, outcoupling losses are dominated by radiation towards the high refractive index substrate. The ability to tune… Expand
17 Citations
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Human hand as a powerless and multiplexed infrared light source for information decryption and complex signal generation
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Actively variable-spectrum optoelectronics with black phosphorus.
This work shows a continuous and reversible tuning of the operating wavelengths in light-emitting diodes and photodetectors composed of black phosphorus, and leverages this platform to demonstrate multiplexed nondispersive infrared gas sensing, whereby multiple gases are detected using a single light source. Expand
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Intercalation Strategy in 2D Materials for Electronics and Optoelectronics
  • Zexin Li, Dongyan Li, +4 authors T. Zhai
  • Materials Science
  • Small Methods
  • 2021


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