Zinc sulphide overlayer two-dimensional photonic crystal for enhanced extraction of light from a micro cavity light-emitting diode

Michael A. Mastro, Chul Soo Kim, Mijin Kim, Josh CalDWell, Ron T. Holm, Igor VUrgaftman, Ji Hyun Kim, Charles R. Eddy, Jerry R. Meyer

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

A two-dimensional (2D) ZnS photonic crystal was deposited on the surface of a one-dimensional (1D) III-nitride micro cavity light-emitting diode (LED), to intermix the light extraction features of both structures (1D+2D). The deposition of an ideal micro-cavity optical thickness of ≈λ/2 is impractical for III-nitride LEDs, and in realistic multi-mode devices a large fraction of the light is lost to internal refraction as guided light. Therefore, a 2D photonic crystal on the surface of the LED was used to diffract and thus redirect this guided light out of the semiconductor over several hundred microns. Additionally, the employment of a post-epitaxy ZnS 2D photonic crystal avoided the typical etching into the GaN:Mg contact layer, a procedure which can cause damage to the near surface.

Original languageEnglish
Pages (from-to)7827-7830
Number of pages4
JournalJapanese Journal of Applied Physics
Volume47
Issue number10 PART 1
DOIs
Publication statusPublished - 2008 Oct 1

Fingerprint

Zinc sulfide
zinc sulfides
Photonic crystals
Light emitting diodes
light emitting diodes
photonics
cavities
Nitrides
crystals
nitrides
Refraction
Epitaxial growth
pattern recognition
optical thickness
epitaxy
Feature extraction
refraction
Etching
etching
Semiconductor materials

Keywords

  • GaN
  • Micro cavity light-emitting diode
  • Photonic crystal

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Mastro, M. A., Kim, C. S., Kim, M., CalDWell, J., Holm, R. T., VUrgaftman, I., ... Meyer, J. R. (2008). Zinc sulphide overlayer two-dimensional photonic crystal for enhanced extraction of light from a micro cavity light-emitting diode. Japanese Journal of Applied Physics, 47(10 PART 1), 7827-7830. https://doi.org/10.1143/JJAP.47.7827

Zinc sulphide overlayer two-dimensional photonic crystal for enhanced extraction of light from a micro cavity light-emitting diode. / Mastro, Michael A.; Kim, Chul Soo; Kim, Mijin; CalDWell, Josh; Holm, Ron T.; VUrgaftman, Igor; Kim, Ji Hyun; Eddy, Charles R.; Meyer, Jerry R.

In: Japanese Journal of Applied Physics, Vol. 47, No. 10 PART 1, 01.10.2008, p. 7827-7830.

Research output: Contribution to journalArticle

Mastro, Michael A. ; Kim, Chul Soo ; Kim, Mijin ; CalDWell, Josh ; Holm, Ron T. ; VUrgaftman, Igor ; Kim, Ji Hyun ; Eddy, Charles R. ; Meyer, Jerry R. / Zinc sulphide overlayer two-dimensional photonic crystal for enhanced extraction of light from a micro cavity light-emitting diode. In: Japanese Journal of Applied Physics. 2008 ; Vol. 47, No. 10 PART 1. pp. 7827-7830.
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