https://scholars.lib.ntu.edu.tw/handle/123456789/342443
標題: | Numerical study on quantum efficiency enhancement of a light-emitting diode based on surface plasmon coupling with a quantum well | 作者: | Chuang, Wen-Hung Wang, Jyh-Yang CHIH-CHUNG YANG YEAN-WOEI KIANG |
關鍵字: | Light-emitting diodes; Quantum wells (QWs); Surface waves | 公開日期: | 八月-2008 | 卷: | 20 | 期: | 16 | 起(迄)頁: | 1339-1341 | 來源出版物: | IEEE Photonics Technology Letters | 摘要: | We demonstrate the numerical study results of the enhancements of internal quantum efficiency (IQE) and external quantum efficiency (EQE) of a semiconductor quantum well when it is coupled with surface plasmons (SPs) induced on a grating interface between Ag and semiconductor. The IQE and EQE enhancements depend on the emission dipole position and the assigned intrinsic IQE. The SP dissipation in metal and the grazing-angle SP radiation lead to a significant difference between IQE and EQE. The enhancement of EQE is less significant when the intrinsic IQE becomes larger. In applying the SP coupling phenomenon to an InGaN-GaN quantum-well light-emitting diode, the efficiency enhancement is more significant in the green-red range, in which the intrinsic IQE is normally quite low. © 2008 IEEE. |
URI: | http://scholars.lib.ntu.edu.tw/handle/123456789/342443 https://www.scopus.com/inward/record.uri?eid=2-s2.0-49349083016&doi=10.1109%2fLPT.2008.926853&partnerID=40&md5=016f852a62aa9e1b3b5a188c97931015 |
ISSN: | 10411135 | DOI: | 10.1109/LPT.2008.926853 | SDG/關鍵字: | Electric conductivity; Gallium nitride; Light emission; Light emitting diodes; Metals; Nanolithography; Numerical analysis; Optical data storage; Plasmons; Semiconducting gallium; Semiconductor diodes; Semiconductor materials; Semiconductor quantum dots; Semiconductor quantum wells; Semiconductor quantum wires; Silver; Coupling phenomenon; Efficiency enhancement; External quantum efficiency; Internal quantum efficiency; Light-emitting diode; Numerical studies; Quantum wells; Quantum wells (QWs); Surface plasmon coupling; Surface plasmons; Surface waves; Quantum efficiency |
顯示於: | 電機工程學系 |
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