Bright Infrared Emission from Electrically Induced Excitons in Carbon Nanotubes

@article{Chen2005BrightIE,
  title={Bright Infrared Emission from Electrically Induced Excitons in Carbon Nanotubes},
  author={Jia Chen and Vasili Perebeinos and M. Freitag and James C. Tsang and Qiang Fu and Jie Liu and Phaedon Avouris},
  journal={Science},
  year={2005},
  volume={310},
  pages={1171 - 1174}
}
We used the high local electric fields at the junction between the suspended and supported parts of a single carbon nanotube molecule to produce unusually bright infrared emission under unipolar operation. Carriers were accelerated by band-bending at the suspension interface, and they created excitons that radiatively recombined. This excitation mechanism is ∼1000 times more efficient than recombination of independently injected electrons and holes, and it results from weak electron-phonon… 
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