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UV LEDs

Electron-beam excitation

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Researchers in Japan have used electron-beam excitation in an AlGaN/AlGaN quantum-well structure to demonstrate the emission of ultraviolet light at record-breaking efficiency, giving hope for the realization of high-power efficient semiconductor sources of deep-ultraviolet light.

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Figure 1: Maximum external quantum efficiencies of UV LEDs attained by various research groups (as compiled by Khan et al.6), including the power efficiency reported by Oto et al.

References

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Authors and Affiliations

  1. E. Fred Schubert and Jaehee Cho are in the Department of Electrical, Computer and System Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, USA.,

    E. Fred Schubert & Jaehee Cho

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  1. E. Fred Schubert
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  2. Jaehee Cho
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Correspondence to E. Fred Schubert.

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Schubert, E., Cho, J. Electron-beam excitation. Nature Photon 4, 735–736 (2010). https://doi.org/10.1038/nphoton.2010.254

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