An aluminium nitride light-emitting diode with a wavelength of 210 nanometres

@article{Taniyasu2006AnAN,
  title={An aluminium nitride light-emitting diode with a wavelength of 210 nanometres},
  author={Yoshitaka Taniyasu and Makoto Kasu and Toshiki Makimōto},
  journal={Nature},
  year={2006},
  volume={441},
  pages={325-328}
}
Compact high-efficiency ultraviolet solid-state light sources—such as light-emitting diodes (LEDs) and laser diodes—are of considerable technological interest as alternatives to large, toxic, low-efficiency gas lasers and mercury lamps. Microelectronic fabrication technologies and the environmental sciences both require light sources with shorter emission wavelengths: the former for improved resolution in photolithography and the latter for sensors that can detect minute hazardous particles. In… 

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