Shen, Kun-ChingKun-ChingShenChen, Cheng-YenCheng-YenChenChen, Hung-LuHung-LuChenHuang, Chi-FengChi-FengHuangCHIH-CHUNG YANGYEAN-WOEI KIANGYING-JAY YANG2018-09-102018-09-102008-1200036951http://scholars.lib.ntu.edu.tw/handle/123456789/342445https://www.scopus.com/inward/record.uri?eid=2-s2.0-57649136745&doi=10.1063%2f1.3046099&partnerID=40&md5=b07be17c118621c6cd2e0ca0f9de0a7cThe enhanced and partially polarized output of a green light-emitting diode (LED), in which its InGaN/GaN quantum well (QW) couples with surface plasmons (SPs) on a surface Ag grating structure, is demonstrated. Compared with a LED sample without (flat) Ag coating, the total output intensity of an LED of SP-QW coupling can be enhanced by ∼59% (∼200) % when the grating period and groove depth are 500 and 30 nm, respectively. Also, a bottom-emission polarization ratio of 1.7 can be obtained under the condition of 15 nm in groove depth. © 2008 American Institute of Physics.application/pdfapplication/pdfCurrent density; Light emission; Plasmons; Semiconductor quantum wells; Semiconductor quantum wires; Silver; Surface structure; Grating periods; Grating structures; Green lights; Groove depths; InGaN/GaN quantum wells; Light emitting diode leds; Metal gratings; Output intensities; Polarization ratios; Surface plasmons; Light emitting diodesjournal article10.1063/1.30460992-s2.0-57649136745WOS:000261699700011