Wu R.-NNi C.-CYang SKuo YChang W.-YSu Y.-CKuo S.-YCHIH-CHUNG YANG2023-06-092023-06-09202225740970https://www.scopus.com/inward/record.uri?eid=2-s2.0-85131695794&doi=10.1021%2facsanm.2c01375&partnerID=40&md5=80c0be1db562e9fc05d898b9b3686483https://scholars.lib.ntu.edu.tw/handle/123456789/632157The application of surface metal nanoparticles (NPs) to a light-emitting diode for producing surface plasmon (SP) coupling with its quantum wells (QWs) is a simple and effective technique to increase its emission efficiency. However, the control of the hot spot geometry in the SP coupling process for maximizing its effect is not well understood yet. In this study, InGaN/GaN QW templates are overlaid with chemically synthesized Ag NPs, which are bonded onto GaN through an electrostatic force, for studying the SP coupling effects under different conditions of in situ Ag NP deformation. Through the Ag NP deformation, the geometry of the contact interface between a Ag NP and the QW template can be controlled, leading to different SP coupling behaviors. The results of a simulation study indicate that the substrate mode behavior of the localized SP resonance on a surface Ag NP, which is strongly related to the contact-interface geometry, plays a key role in controlling the SP coupling spectrum and strength. © 2022 American Chemical Society.chemically synthesized Ag nanoparticle; emission efficiency enhancement; localized surface plasmon resonance; quantum well; surface metal nanoparticle; surface plasmon couplingDeformation; Efficiency; Gallium nitride; Geometry; III-V semiconductors; Indium compounds; Photoluminescence; Quantum efficiency; Semiconductor quantum wells; Silver nanoparticles; Surface plasmon resonance; Synthesis (chemical); Chemically synthesized ag nanoparticle; Efficiency enhancement; Emission efficiencies; Emission efficiency enhancement; Localized surface plasmon resonance; Quantum-wells; Surface metal nanoparticle; Surface metals; Surface plasmon coupling; Synthesised; Metal nanoparticlesjournal article10.1021/acsanm.2c013752-s2.0-85131695794