Enhancement of light emission and internal quantum efficiency in orange and red regions for regularly arrayed InGaN/GaN nanocolumns due to surface plasmon coupling

Takao Oto; Kazuma Kikuchi; Koichi Okamoto; Katsumi Kishino

doi:10.1063/1.5005517

Enhancement of light emission and internal quantum efficiency in orange and red regions for regularly arrayed InGaN/GaN nanocolumns due to surface plasmon coupling

Takao Oto, Kazuma Kikuchi, Koichi Okamoto, Katsumi Kishino

Department of Fundamental Organic Chemistry

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

5 Citations (Scopus)

Abstract

We demonstrate enhanced light emission in the orange and red regions from regularly arrayed InGaN/GaN nanocolumns due to the surface plasmon (SP) coupling. A maximum photoluminescence (PL) enhancement ratio of 5.2 is observed by coating the nanocolumns with an Au thin film. In addition, a 2.1-fold increase in the internal quantum efficiency is obtained. Comparison of an electromagnetic field simulation and a theoretical calculation based on the SP dispersion indicates that the SP originates from a standing wave mode arising from the periodic Au/dielectric interface. The column-diameter dependence of the PL enhancement ratio can be reasonably explained by considering the simulated electric field intensity. The periodic plasmonic nanostructure is effective for improving the emission efficiencies of InGaN-based light emitters in the orange and red regions.

Original language	English
Article number	133110
Journal	Applied Physics Letters
Volume	111
Issue number	13
DOIs	https://doi.org/10.1063/1.5005517
Publication status	Published - Sep 25 2017

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.5005517

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@article{18465ea48d2b473a981ce4f210168563,

title = "Enhancement of light emission and internal quantum efficiency in orange and red regions for regularly arrayed InGaN/GaN nanocolumns due to surface plasmon coupling",

abstract = "We demonstrate enhanced light emission in the orange and red regions from regularly arrayed InGaN/GaN nanocolumns due to the surface plasmon (SP) coupling. A maximum photoluminescence (PL) enhancement ratio of 5.2 is observed by coating the nanocolumns with an Au thin film. In addition, a 2.1-fold increase in the internal quantum efficiency is obtained. Comparison of an electromagnetic field simulation and a theoretical calculation based on the SP dispersion indicates that the SP originates from a standing wave mode arising from the periodic Au/dielectric interface. The column-diameter dependence of the PL enhancement ratio can be reasonably explained by considering the simulated electric field intensity. The periodic plasmonic nanostructure is effective for improving the emission efficiencies of InGaN-based light emitters in the orange and red regions.",

author = "Takao Oto and Kazuma Kikuchi and Koichi Okamoto and Katsumi Kishino",

note = "Funding Information: We acknowledge K. Ema, A. Kikuchi, T. Nakaoka, and Y. Inose of Sophia University for valuable discussion. We thank A. Takahashi of Sophia University (current affiliation: Sony Corporation) for supporting the NC sample fabrication. This research was supported by KAKENHI, JSPS, Japan (Grant No. 24000013). Publisher Copyright: {\textcopyright} 2017 Author(s).",

year = "2017",

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doi = "10.1063/1.5005517",

language = "English",

volume = "111",

journal = "Applied Physics Letters",

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TY - JOUR

T1 - Enhancement of light emission and internal quantum efficiency in orange and red regions for regularly arrayed InGaN/GaN nanocolumns due to surface plasmon coupling

AU - Oto, Takao

AU - Kikuchi, Kazuma

AU - Okamoto, Koichi

AU - Kishino, Katsumi

N1 - Funding Information: We acknowledge K. Ema, A. Kikuchi, T. Nakaoka, and Y. Inose of Sophia University for valuable discussion. We thank A. Takahashi of Sophia University (current affiliation: Sony Corporation) for supporting the NC sample fabrication. This research was supported by KAKENHI, JSPS, Japan (Grant No. 24000013). Publisher Copyright: © 2017 Author(s).

PY - 2017/9/25

Y1 - 2017/9/25

N2 - We demonstrate enhanced light emission in the orange and red regions from regularly arrayed InGaN/GaN nanocolumns due to the surface plasmon (SP) coupling. A maximum photoluminescence (PL) enhancement ratio of 5.2 is observed by coating the nanocolumns with an Au thin film. In addition, a 2.1-fold increase in the internal quantum efficiency is obtained. Comparison of an electromagnetic field simulation and a theoretical calculation based on the SP dispersion indicates that the SP originates from a standing wave mode arising from the periodic Au/dielectric interface. The column-diameter dependence of the PL enhancement ratio can be reasonably explained by considering the simulated electric field intensity. The periodic plasmonic nanostructure is effective for improving the emission efficiencies of InGaN-based light emitters in the orange and red regions.

AB - We demonstrate enhanced light emission in the orange and red regions from regularly arrayed InGaN/GaN nanocolumns due to the surface plasmon (SP) coupling. A maximum photoluminescence (PL) enhancement ratio of 5.2 is observed by coating the nanocolumns with an Au thin film. In addition, a 2.1-fold increase in the internal quantum efficiency is obtained. Comparison of an electromagnetic field simulation and a theoretical calculation based on the SP dispersion indicates that the SP originates from a standing wave mode arising from the periodic Au/dielectric interface. The column-diameter dependence of the PL enhancement ratio can be reasonably explained by considering the simulated electric field intensity. The periodic plasmonic nanostructure is effective for improving the emission efficiencies of InGaN-based light emitters in the orange and red regions.

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U2 - 10.1063/1.5005517

DO - 10.1063/1.5005517

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VL - 111

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 13

M1 - 133110

ER -

Enhancement of light emission and internal quantum efficiency in orange and red regions for regularly arrayed InGaN/GaN nanocolumns due to surface plasmon coupling

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