Zinc Sulphide Overlayer Two-Dimensional Photonic Crystal for Enhanced Extraction of Light from a Micro Cavity Light-Emitting Diode
- Authors
- Mastro, Michael A.; Kim, Chul Soo; Kim, Mijin; Caldwell, Josh; Holm, Ron T.; Vurgaftman, Igor; Kim, Jihyun; Eddy, Charles R., Jr.; Meyer, Jerry R.
- Issue Date
- 10월-2008
- Publisher
- IOP PUBLISHING LTD
- Keywords
- photonic crystal; GaN; micro cavity light-emitting diode
- Citation
- JAPANESE JOURNAL OF APPLIED PHYSICS, v.47, no.10, pp.7827 - 7830
- Indexed
- SCIE
SCOPUS
- Journal Title
- JAPANESE JOURNAL OF APPLIED PHYSICS
- Volume
- 47
- Number
- 10
- Start Page
- 7827
- End Page
- 7830
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/122676
- DOI
- 10.1143/JJAP.47.7827
- ISSN
- 0021-4922
- Abstract
- A two-dimensional (2D) ZnS photonic crystal was deposited on the surface of a one-dimensional (1 D) III-nitride micro cavity light-emitting diode (LED), to intermix the light extraction features of both structures (ID+2D). The deposition of an ideal micro-cavity optical thickness of approximate to lambda/2 is impractical for Ill-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. [DOI: 10.1143/JJAP.47.7827]
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Collections - College of Engineering > Department of Chemical and Biological Engineering > 1. Journal Articles
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