Observation of whispering gallery modes in InGaN/GaN multi-quantum well microdisks with Ag plasmonic nanoparticles on Si pedestals

Kang Jea Lee; Duc Anh Dinh; Huynh Tran My Hoa; Pham Hoai Phuong; Hoang Hung Nguyen; Kwan San Hui; Kwun Nam Hui; Tran Viet Cuong

doi:10.1007/s11664-022-09464-3

Observation of whispering gallery modes in InGaN/GaN multi-quantum well microdisks with Ag plasmonic nanoparticles on Si pedestals

Kang Jea Lee, Duc Anh Dinh, Huynh Tran My Hoa, Pham Hoai Phuong, Hoang Hung Nguyen, Kwan San Hui, Kwun Nam Hui, Tran Viet Cuong

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Abstract

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/cm² with a WGM mode spacing of Δλ = 1.3 nm.

Original language	English
Pages (from-to)	2054-2061
Number of pages	8
Journal	Journal of Electronic Materials
Volume	51
Issue number	5
Early online date	11 Feb 2022
DOIs	https://doi.org/10.1007/s11664-022-09464-3
Publication status	Published - May 2022

Keywords

InGaN/GaN multi-quantum wells
Microdisks
whispering gallery modes

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title = "Observation of whispering gallery modes in InGaN/GaN multi-quantum well microdisks with Ag plasmonic nanoparticles on Si pedestals",

abstract = "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/cm2 with a WGM mode spacing of Δλ = 1.3 nm.",

keywords = "InGaN/GaN multi-quantum wells, Microdisks, whispering gallery modes",

author = "Lee, {Kang Jea} and Dinh, {Duc Anh} and Hoa, {Huynh Tran My} and Phuong, {Pham Hoai} and Nguyen, {Hoang Hung} and Hui, {Kwan San} and Hui, {Kwun Nam} and Cuong, {Tran Viet}",

note = "Funding Information: This research is funded by Vietnam National Foundation for Science and Technology Development (NAFOSTED) under Grant Number 103.02-2018.352. ",

year = "2022",

month = may,

doi = "10.1007/s11664-022-09464-3",

language = "English",

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pages = "2054--2061",

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T1 - Observation of whispering gallery modes in InGaN/GaN multi-quantum well microdisks with Ag plasmonic nanoparticles on Si pedestals

AU - Lee, Kang Jea

AU - Dinh, Duc Anh

AU - Hoa, Huynh Tran My

AU - Phuong, Pham Hoai

AU - Nguyen, Hoang Hung

AU - Hui, Kwan San

AU - Hui, Kwun Nam

AU - Cuong, Tran Viet

N1 - Funding Information: This research is funded by Vietnam National Foundation for Science and Technology Development (NAFOSTED) under Grant Number 103.02-2018.352.

PY - 2022/5

Y1 - 2022/5

N2 - 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/cm2 with a WGM mode spacing of Δλ = 1.3 nm.

AB - 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/cm2 with a WGM mode spacing of Δλ = 1.3 nm.

KW - InGaN/GaN multi-quantum wells

KW - Microdisks

KW - whispering gallery modes

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U2 - 10.1007/s11664-022-09464-3

DO - 10.1007/s11664-022-09464-3

M3 - Article

AN - SCOPUS:85124483075

VL - 51

SP - 2054

EP - 2061

JO - Journal of Electronic Materials

JF - Journal of Electronic Materials

SN - 0361-5235

IS - 5

ER -

Observation of whispering gallery modes in InGaN/GaN multi-quantum well microdisks with Ag plasmonic nanoparticles on Si pedestals

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Keywords

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