Extraction efficiency improvement of GaN light-emitting diode using sub-wavelength nanoimprinted patterns on sapphire substrate

Hao Chen, Chao Wang, Stephen Y. Chou

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The sapphire substrate with sub-wavelength pattern pitch (200 nm) was fabricated by nanoimprint and has significantly enhanced the extraction efficiency of GaN LED (λ=450 nm) -- 80% more light out than the LEDs on flat sapphire substrate that grown in the same run and better than previously-reported micro-scale patterns.

Original languageEnglish (US)
Title of host publicationCLEO
Subtitle of host publicationScience and Innovations, CLEO_SI 2011
StatePublished - Dec 1 2011
EventCLEO: Science and Innovations, CLEO_SI 2011 - Baltimore, MD, United States
Duration: May 1 2011May 6 2011

Publication series

NameOptics InfoBase Conference Papers
ISSN (Electronic)2162-2701

Other

OtherCLEO: Science and Innovations, CLEO_SI 2011
CountryUnited States
CityBaltimore, MD
Period5/1/115/6/11

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Atomic and Molecular Physics, and Optics

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  • Cite this

    Chen, H., Wang, C., & Chou, S. Y. (2011). Extraction efficiency improvement of GaN light-emitting diode using sub-wavelength nanoimprinted patterns on sapphire substrate. In CLEO: Science and Innovations, CLEO_SI 2011 (Optics InfoBase Conference Papers).