https://scholars.lib.ntu.edu.tw/handle/123456789/342443
Title: | Numerical study on quantum efficiency enhancement of a light-emitting diode based on surface plasmon coupling with a quantum well | Authors: | Chuang, Wen-Hung Wang, Jyh-Yang CHIH-CHUNG YANG YEAN-WOEI KIANG |
Keywords: | Light-emitting diodes; Quantum wells (QWs); Surface waves | Issue Date: | Aug-2008 | Journal Volume: | 20 | Journal Issue: | 16 | Start page/Pages: | 1339-1341 | Source: | IEEE Photonics Technology Letters | Abstract: | 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/Keyword: | 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 |
Appears in Collections: | 電機工程學系 |
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