Enhanced light extraction from GaN-based light-emitting diodes with holographically generated two-dimensional photonic crystal patterns

Dong Ho Kim, Chi O. Cho, Yeong Geun Roh, Heonsu Jeon, Yoon Soo Park, Jaehee Cho, Jin Seo Im, Cheolsoo Sone, Yongjo Park, Won Jun Choi, Q. Han Park

Research output: Contribution to journalArticle

327 Citations (Scopus)

Abstract

We observed a significant enhancement in light output from GaN-based light-emitting diodes (LEDs) in which two-dimensional photonic crystal (PC) patterns were integrated. Two-dimensional square-lattice air-hole array patterns with a period that varied from 300 to 700 nm were generated by laser holography. Unlike the commonly utilized electron-beam lithographic technique, the holographic method can make patterns over a large area with high throughput. The resultant PC-LED devices with a pattern period of ∼500 nm had more than double the output power, as measured from the top of the device. The experimental observations are qualitatively consistent with the results of three-dimensional finite-difference-time-domain simulation.

Original languageEnglish
Article number203508
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Volume87
Issue number20
DOIs
Publication statusPublished - 2005 Nov 14

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    Kim, D. H., Cho, C. O., Roh, Y. G., Jeon, H., Park, Y. S., Cho, J., Im, J. S., Sone, C., Park, Y., Choi, W. J., & Park, Q. H. (2005). Enhanced light extraction from GaN-based light-emitting diodes with holographically generated two-dimensional photonic crystal patterns. Applied Physics Letters, 87(20), 1-3. [203508]. https://doi.org/10.1063/1.2132073