Improved light output of photonic crystal light-emitting diode fabricated by anodized aluminum oxide nano-patterns
- Authors
- Park, Joonmo; Oh, Jin-Kyoung; Kwon, Kwang-Woo; Kim, Young-Ho; Jo, Sung-Soo; Lee, Jun Key; Ryu, Sang-Wan
- Issue Date
- Jan-2008
- Publisher
- Institute of Electrical and Electronics Engineers Inc.
- Keywords
- Anodized aluminum oxide (AAO); Light-emitting diode (LED); Nano-pattern; Photonic crystal (PC)
- Citation
- IEEE Photonics Technology Letters, v.20, no.4, pp.321 - 323
- Indexed
- SCOPUS
- Journal Title
- IEEE Photonics Technology Letters
- Volume
- 20
- Number
- 4
- Start Page
- 321
- End Page
- 323
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/172161
- DOI
- 10.1109/LPT.2007.915617
- ISSN
- 1041-1135
- Abstract
- A photonic crystal (PC) light-emitting diode (LED) was fabricated using an anodized aluminum oxide (AAO) nanopattern technique, which has potential applications to mass production. The AAO nano-pattern, which was anodized in 0.3-M oxalic acid at 70 V, was transferred to the n-GaN bottom cladding through reactive ion etching and covered during the regrowth of GaN to form periodic air holes. The PC was embedded into the bottom cladding, which resulted in a low operating voltage. For the PC LED, the light output was enhanced by more than 20%, while the operating voltage increased only slightly. The radiation pattern of the PC LED showed two lobes at approximately ±30°, which originated from the diffraction by PC.
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