Investigation of optical and structural stability of localized surface plasmon mediated light-emitting diodes by Ag and Ag/SiO 2 nanoparticles

Lee Woon Jang; Dae Woo Jeon; Myoung Kim; Ju Won Jeon; Alexander Y. Polyakov; Jin Woo Ju; Seung Jae Lee; Jong Hyeob Baek; Jin Kyu Yang; In Hwan Lee

doi:10.1002/adfm.201103161

Investigation of optical and structural stability of localized surface plasmon mediated light-emitting diodes by Ag and Ag/SiO ₂ nanoparticles

Lee Woon Jang, Dae Woo Jeon, Myoung Kim, Ju Won Jeon, Alexander Y. Polyakov, Jin Woo Ju, Seung Jae Lee, Jong Hyeob Baek, Jin Kyu Yang, In Hwan Lee

Research output: Contribution to journal › Article › peer-review

59 Citations (Scopus)

Abstract

Localized surface plasmon (LSP) effects due to Ag and Ag/SiO ₂ nanoparticles (NPs) deposited on GaN/InGaN multiquantum well (MQW) light-emitting diode (LED) structures are studied. The colloidal NPs are synthesized by a sol-gel method and drop-cased on the LED structures. The surface density of NPs its controlled by the concentration of the NP solution. Theoretical modeling is performed for the emission spectrum and the electric field distribution of LSP resonance for Ag/SiO ₂ NPs. Enhanced photoluminescence (PL) efficiency is observed in the LED structures and the amount of PL enhancement increases with increasing the surface density of Ag and Ag/SiO ₂ NPs. These effects are attributed to resonance coupling between the MQW and LSP in the NPs. It is also shown that the PL enhancement attainable with Ag NPs and Ag/SiO ₂ NPs is comparable, but the latter displays a much higher stability with respect to long-term storage and annealing due to a barrier for NP agglomeration, Ag oxidation, and impurity diffusion provided by the SiO ₂ shell.

Original language	English
Pages (from-to)	2728-2734
Number of pages	7
Journal	Advanced Functional Materials
Volume	22
Issue number	13
DOIs	https://doi.org/10.1002/adfm.201103161
Publication status	Published - 2012 Jul 10
Externally published	Yes

Keywords

Ag/SiO nanoparticles
light-emitting diodes
localized surface plasmons
quantum efficiencies
silver nanoparticles

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

Access to Document

10.1002/adfm.201103161

Cite this

@article{973ff42ad13a44c68ea870d7002df552,

title = "Investigation of optical and structural stability of localized surface plasmon mediated light-emitting diodes by Ag and Ag/SiO 2 nanoparticles",

abstract = "Localized surface plasmon (LSP) effects due to Ag and Ag/SiO 2 nanoparticles (NPs) deposited on GaN/InGaN multiquantum well (MQW) light-emitting diode (LED) structures are studied. The colloidal NPs are synthesized by a sol-gel method and drop-cased on the LED structures. The surface density of NPs its controlled by the concentration of the NP solution. Theoretical modeling is performed for the emission spectrum and the electric field distribution of LSP resonance for Ag/SiO 2 NPs. Enhanced photoluminescence (PL) efficiency is observed in the LED structures and the amount of PL enhancement increases with increasing the surface density of Ag and Ag/SiO 2 NPs. These effects are attributed to resonance coupling between the MQW and LSP in the NPs. It is also shown that the PL enhancement attainable with Ag NPs and Ag/SiO 2 NPs is comparable, but the latter displays a much higher stability with respect to long-term storage and annealing due to a barrier for NP agglomeration, Ag oxidation, and impurity diffusion provided by the SiO 2 shell.",

keywords = "Ag/SiO nanoparticles, light-emitting diodes, localized surface plasmons, quantum efficiencies, silver nanoparticles",

author = "Jang, {Lee Woon} and Jeon, {Dae Woo} and Myoung Kim and Jeon, {Ju Won} and Polyakov, {Alexander Y.} and Ju, {Jin Woo} and Lee, {Seung Jae} and Baek, {Jong Hyeob} and Yang, {Jin Kyu} and Lee, {In Hwan}",

year = "2012",

month = jul,

day = "10",

doi = "10.1002/adfm.201103161",

language = "English",

volume = "22",

pages = "2728--2734",

journal = "Advanced Functional Materials",

issn = "1616-301X",

publisher = "Wiley-VCH Verlag",

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}

TY - JOUR

T1 - Investigation of optical and structural stability of localized surface plasmon mediated light-emitting diodes by Ag and Ag/SiO 2 nanoparticles

AU - Jang, Lee Woon

AU - Jeon, Dae Woo

AU - Kim, Myoung

AU - Jeon, Ju Won

AU - Polyakov, Alexander Y.

AU - Ju, Jin Woo

AU - Lee, Seung Jae

AU - Baek, Jong Hyeob

AU - Yang, Jin Kyu

AU - Lee, In Hwan

PY - 2012/7/10

Y1 - 2012/7/10

N2 - Localized surface plasmon (LSP) effects due to Ag and Ag/SiO 2 nanoparticles (NPs) deposited on GaN/InGaN multiquantum well (MQW) light-emitting diode (LED) structures are studied. The colloidal NPs are synthesized by a sol-gel method and drop-cased on the LED structures. The surface density of NPs its controlled by the concentration of the NP solution. Theoretical modeling is performed for the emission spectrum and the electric field distribution of LSP resonance for Ag/SiO 2 NPs. Enhanced photoluminescence (PL) efficiency is observed in the LED structures and the amount of PL enhancement increases with increasing the surface density of Ag and Ag/SiO 2 NPs. These effects are attributed to resonance coupling between the MQW and LSP in the NPs. It is also shown that the PL enhancement attainable with Ag NPs and Ag/SiO 2 NPs is comparable, but the latter displays a much higher stability with respect to long-term storage and annealing due to a barrier for NP agglomeration, Ag oxidation, and impurity diffusion provided by the SiO 2 shell.

AB - Localized surface plasmon (LSP) effects due to Ag and Ag/SiO 2 nanoparticles (NPs) deposited on GaN/InGaN multiquantum well (MQW) light-emitting diode (LED) structures are studied. The colloidal NPs are synthesized by a sol-gel method and drop-cased on the LED structures. The surface density of NPs its controlled by the concentration of the NP solution. Theoretical modeling is performed for the emission spectrum and the electric field distribution of LSP resonance for Ag/SiO 2 NPs. Enhanced photoluminescence (PL) efficiency is observed in the LED structures and the amount of PL enhancement increases with increasing the surface density of Ag and Ag/SiO 2 NPs. These effects are attributed to resonance coupling between the MQW and LSP in the NPs. It is also shown that the PL enhancement attainable with Ag NPs and Ag/SiO 2 NPs is comparable, but the latter displays a much higher stability with respect to long-term storage and annealing due to a barrier for NP agglomeration, Ag oxidation, and impurity diffusion provided by the SiO 2 shell.

KW - Ag/SiO nanoparticles

KW - light-emitting diodes

KW - localized surface plasmons

KW - quantum efficiencies

KW - silver nanoparticles

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