Light extraction efficiency enhancement using surface-structured light-emitting diodes with a subwavelength coating

Myung Su Seok, Seok Jae Yoo, Jong Ho Choe, Q. Han Park, Yong Tae Moon

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

The results of our analysis, which was done by using the finite-difference, time-domain (FDTD) methods suggest that surface-structured light-emitting diodes (LEDs) with a subwavelength aluminum-nitride coating will have an enhanced light extraction efficiency. The use of such a LED structure will reduce both the internal reflection and the impedance mismatch, leading to a 3.2-fold enhancement in the light extraction efficiency compared to that for bare planar LEDs. We also present an improved method of modeling the light emission from the LED’s active layers to numerically calculate the light extraction efficiency of LEDs.

Original languageEnglish
Pages (from-to)462-466
Number of pages5
JournalJournal of the Korean Physical Society
Volume68
Issue number3
DOIs
Publication statusPublished - 2016 Feb 1

Bibliographical note

Funding Information:
This research was supported by the NanoMaterial Technology Development Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (MSIP) (No. 2011-0020205) and by the Center for Advanced Meta- Materials (CAMM) funded by the Ministry of Science, ICT and Future Planning as a Global Frontier Project (CAMM-2014M3A6B3063710).

Publisher Copyright:
© 2016, The Korean Physical Society.

Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.

Keywords

  • Anti-reflection coatings
  • Light-emitting diodes
  • Total internal reflection

ASJC Scopus subject areas

  • General Physics and Astronomy

Fingerprint

Dive into the research topics of 'Light extraction efficiency enhancement using surface-structured light-emitting diodes with a subwavelength coating'. Together they form a unique fingerprint.

Cite this