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Enhancement of light extraction from a silicon quantum dot light-emitting diode containing a rugged surface pattern

Applied Physics Letters, ISSN: 0003-6951, Vol: 89, Issue: 19
2006
  • 27
    Citations
  • 0
    Usage
  • 17
    Captures
  • 0
    Mentions
  • 0
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Metrics Details

  • Citations
    27
    • Citation Indexes
      27
  • Captures
    17

Article Description

The enhancement in light extraction efficiency from a periodic micron-scale rugged surface pattern on Si quantum dot light-emitting-diode (Si-QD LED) structures was investigated, both numerically and experimentally. Micron-scale rugged surface patterns were fabricated on the top layer of the Si-QD LED to increase the extraction of light from the active layer. The optimum light extraction condition for a Si-QD LED corresponded to a pattern size/period ratio of ∼0.7. In experiments, the luminescent powers of a Si-QD LED with/without micron-scale surface patterns increase linearly with current density, and the efficiency of light extraction was enhanced by a factor of 2.8. © 2006 American Institute of Physics.

Bibliographic Details

Kyung Hyun Kim; Jae Heon Shin; Nae Man Park; Chul Huh; Tae Youb Kim; Kwan Sik Cho; Jong Cheol Hong; Gun Yong Sung

AIP Publishing

Physics and Astronomy

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