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Proceedings Paper

Enhanced optical characteristics of light emitting diodes by surface plasmon of Ag nanostructures
Author(s): Lee-Woon Jang; Jin-Woo Ju; Ju-Won Jeon; Dae-Woo Jeon; Jung-Hun Choi; Seung-Jae Lee; Seong-Ran Jeon; Jong-Hyeob Baek; E. Sari; H. V. Demir; Hyung-Do Yoon; Sung-Min Hwang; In-Hwan Lee
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Paper Abstract

We investigated the surface plasmon coupling behavior in InGaN/GaN multiple quantum wells at 460 nm by employing Ag nanostructures on the top of a roughened p-type GaN. After the growth of a blue light emitting diode structure, the p-GaN layer was roughened by inductive coupled plasma etching and the Ag nanostructures were formed on it. This structure showed a drastic enhancement in photoluminescence and electroluminescence intensity and the degree of enhancement was found to depend on the morphology of Ag nanostructures. From the time-resolved photoluminescence measurement a faster decay rate for the Ag-coated structure was observed. The calculated Purcell enhancement factor indicated that the improved luminescence intensity was attributed to the energy transfer from electron-hole pair recombination in the quantum well to electron vibrations of surface plasmon at the Ag-coated surface of the roughened p-GaN.

Paper Details

Date Published: 24 January 2011
PDF: 12 pages
Proc. SPIE 7945, Quantum Sensing and Nanophotonic Devices VIII, 794511 (24 January 2011); doi: 10.1117/12.869465
Show Author Affiliations
Lee-Woon Jang, Chonbuk National Univ. (Korea, Republic of)
Jin-Woo Ju, Chonbuk National Univ. (Korea, Republic of)
Ju-Won Jeon, Chonbuk National Univ. (Korea, Republic of)
Dae-Woo Jeon, Chonbuk National Univ. (Korea, Republic of)
Jung-Hun Choi, Chonbuk National Univ. (Korea, Republic of)
Seung-Jae Lee, Korea Photonics Technology Institute (Korea, Republic of)
Seong-Ran Jeon, Korea Photonics Technology Institute (Korea, Republic of)
Jong-Hyeob Baek, Korea Photonics Technology Institute (Korea, Republic of)
E. Sari, Bilkent Univ. (Turkey)
H. V. Demir, Bilkent Univ. (Turkey)
Hyung-Do Yoon, Korea Electronics Technology Institute (Korea, Republic of)
Sung-Min Hwang, Korea Electronics Technology Institute (Korea, Republic of)
In-Hwan Lee, Chonbuk National Univ. (Korea, Republic of)


Published in SPIE Proceedings Vol. 7945:
Quantum Sensing and Nanophotonic Devices VIII
Manijeh Razeghi; Rengarajan Sudharsanan; Gail J. Brown, Editor(s)

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