Observation of Whispering Gallery Modes in InGaN/GaN Multi-Quantum Well Microdisks with Ag Plasmonic Nanoparticles on Si Pedestals

In this study, plasmonic freestanding InGaN/GaN multi-quantum well (MQW) microdisks were fabricated on Si (111) pedestals using wet chemical undercut etching, followed by decorating of Ag nanoparticles on microdisks to improve whispering gallery mode (WGM) resonance emission. The enhancement resulte...

Full description

Saved in:
Bibliographic Details
Published in:Journal of electronic materials 2022-05, Vol.51 (5), p.2054-2061
Main Authors: Lee, Kang Jea, Dinh, Duc Anh, Hoa, Huynh Tran My, Phuong, Pham Hoai, Nguyen, Hoang Hung, Hui, Kwan San, Hui, Kwun Nam, Cuong, Tran Viet
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Electronics and Microelectronics
Excitons
Indium gallium nitrides
Instrumentation
Materials Science
Multi Quantum Wells
Nanoparticles
Optical and Electronic Materials
Optical pumping
Original Research Article
Photoluminescence
Plasmonics
Plasmons
Resonance
Silver
Solid State Physics
Whispering gallery modes
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this study, plasmonic freestanding InGaN/GaN multi-quantum well (MQW) microdisks were fabricated on Si (111) pedestals using wet chemical undercut etching, followed by decorating of Ag nanoparticles on microdisks to improve whispering gallery mode (WGM) resonance emission. The enhancement resulted from the plasmonic coupling effect between excitons in MQWs and localized surface plasmons of Ag. The radial resonance of WGMs from optically pumped microdisk cavities were observed in the photoluminescence spectra at a threshold optical pumping power density of 4.7 kW/cm 2 with a WGM mode spacing of Δ λ = 1.3 nm.
ISSN:0361-5235
1543-186X
DOI:10.1007/s11664-022-09464-3