Quantum efficiency control of InGaN/GaN multi-quantum-well structures using Ag/SiO 2 core-shell nanoparticles

Lee Woon Jang; Trilochan Sahoo; Dae Woo Jeon; Myoung Kim; Ju Won Jeon; Dong Seob Jo; Min Kyu Kim; Yeon Tae Yu; Alexander Y. Polyakov; In Hwan Lee

doi:10.1063/1.3671394

Quantum efficiency control of InGaN/GaN multi-quantum-well structures using Ag/SiO ₂ core-shell nanoparticles

Lee Woon Jang, Trilochan Sahoo, Dae Woo Jeon, Myoung Kim, Ju Won Jeon, Dong Seob Jo, Min Kyu Kim, Yeon Tae Yu, Alexander Y. Polyakov, In Hwan Lee

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

18 Citations (Scopus)

Abstract

Photoluminescence (PL) efficiency increase up to 2.8 times was observed for GaN/InGaN multi-quantum-well (MQW) structures as a result of deposition of a thin layer of about 40-nm-diameter Ag nanoparticles (NPs) surrounded by SiO ₂ shell. These Ag/SiO ₂ NPs were prepared by sol-gel method. The amount of PL intensity enhancement decreased with increasing the SiO ₂ shell thickness. PL intensity increase was accompanied by corresponding decrease of PL decay time and is ascribed to a strong coupling of MQW region to localized surface plasmons (LSPs) associated with Ag/SiO ₂ NPs.

Original language	English
Article number	251114
Journal	Applied Physics Letters
Volume	99
Issue number	25
DOIs	https://doi.org/10.1063/1.3671394
Publication status	Published - 2011 Dec 19
Externally published	Yes

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) funded by the Korea government (MEST) (2010-0019626, 2010-0026614).

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/1.3671394

Cite this

@article{daeb7827d71c419da95fd91f0761ca97,

title = "Quantum efficiency control of InGaN/GaN multi-quantum-well structures using Ag/SiO 2 core-shell nanoparticles",

abstract = "Photoluminescence (PL) efficiency increase up to 2.8 times was observed for GaN/InGaN multi-quantum-well (MQW) structures as a result of deposition of a thin layer of about 40-nm-diameter Ag nanoparticles (NPs) surrounded by SiO 2 shell. These Ag/SiO 2 NPs were prepared by sol-gel method. The amount of PL intensity enhancement decreased with increasing the SiO 2 shell thickness. PL intensity increase was accompanied by corresponding decrease of PL decay time and is ascribed to a strong coupling of MQW region to localized surface plasmons (LSPs) associated with Ag/SiO 2 NPs.",

author = "Jang, {Lee Woon} and Trilochan Sahoo and Jeon, {Dae Woo} and Myoung Kim and Jeon, {Ju Won} and Jo, {Dong Seob} and Kim, {Min Kyu} and Yu, {Yeon Tae} and Polyakov, {Alexander Y.} and Lee, {In Hwan}",

note = "Funding Information: This work was supported by the National Research Foundation of Korea (NRF) funded by the Korea government (MEST) (2010-0019626, 2010-0026614). ",

year = "2011",

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doi = "10.1063/1.3671394",

language = "English",

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TY - JOUR

T1 - Quantum efficiency control of InGaN/GaN multi-quantum-well structures using Ag/SiO 2 core-shell nanoparticles

AU - Jang, Lee Woon

AU - Sahoo, Trilochan

AU - Jeon, Dae Woo

AU - Kim, Myoung

AU - Jeon, Ju Won

AU - Jo, Dong Seob

AU - Kim, Min Kyu

AU - Yu, Yeon Tae

AU - Polyakov, Alexander Y.

AU - Lee, In Hwan

N1 - Funding Information: This work was supported by the National Research Foundation of Korea (NRF) funded by the Korea government (MEST) (2010-0019626, 2010-0026614).

PY - 2011/12/19

Y1 - 2011/12/19

N2 - Photoluminescence (PL) efficiency increase up to 2.8 times was observed for GaN/InGaN multi-quantum-well (MQW) structures as a result of deposition of a thin layer of about 40-nm-diameter Ag nanoparticles (NPs) surrounded by SiO 2 shell. These Ag/SiO 2 NPs were prepared by sol-gel method. The amount of PL intensity enhancement decreased with increasing the SiO 2 shell thickness. PL intensity increase was accompanied by corresponding decrease of PL decay time and is ascribed to a strong coupling of MQW region to localized surface plasmons (LSPs) associated with Ag/SiO 2 NPs.

AB - Photoluminescence (PL) efficiency increase up to 2.8 times was observed for GaN/InGaN multi-quantum-well (MQW) structures as a result of deposition of a thin layer of about 40-nm-diameter Ag nanoparticles (NPs) surrounded by SiO 2 shell. These Ag/SiO 2 NPs were prepared by sol-gel method. The amount of PL intensity enhancement decreased with increasing the SiO 2 shell thickness. PL intensity increase was accompanied by corresponding decrease of PL decay time and is ascribed to a strong coupling of MQW region to localized surface plasmons (LSPs) associated with Ag/SiO 2 NPs.

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