Polarization-independent light emission enhancement of ZnO/Ag nanograting via surface plasmon polariton excitation and cavity resonance

Minji Gwon; Y. U. Lee; J. W. Wu; Dahyun Nam; Hyeonsik Cheong; Dong Wook Kim

doi:10.1021/am5014024

Polarization-independent light emission enhancement of ZnO/Ag nanograting via surface plasmon polariton excitation and cavity resonance

Minji Gwon, Y. U. Lee, J. W. Wu, Dahyun Nam, Hyeonsik Cheong, Dong Wook Kim

Department of Physics

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

11 Scopus citations

Abstract

In this study, we observed that the photoluminescence (PL) intensity of ZnO/Ag nanogratings was significantly enhanced compared with that of a planar counterpart under illumination of both transverse magnetic (TM) and transverse electric (TE)-mode light. In the TM mode, angle-resolved reflectance spectra exhibited dispersive dips, indicating cavity resonance as well as grating-coupled surface plasmon polariton (SPP) excitation. In the TE mode, cavity resonance only was allowed, and broad dips appeared in the reflectance spectra. Strong optical field confinement in the ZnO layers, with the help of SPP and cavity modes, facilitated polarization-insensitive PL enhancement. Optical simulation results were in good agreement with the experimental results, supporting the suggested scenario.

Original language	English
Pages (from-to)	8602-8605
Number of pages	4
Journal	ACS Applied Materials and Interfaces
Volume	6
Issue number	11
DOIs	https://doi.org/10.1021/am5014024
State	Published - 11 Jun 2014

Keywords

ZnO
cavity resonance
nanograting
surface plasmon polariton

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10.1021/am5014024

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title = "Polarization-independent light emission enhancement of ZnO/Ag nanograting via surface plasmon polariton excitation and cavity resonance",

abstract = "In this study, we observed that the photoluminescence (PL) intensity of ZnO/Ag nanogratings was significantly enhanced compared with that of a planar counterpart under illumination of both transverse magnetic (TM) and transverse electric (TE)-mode light. In the TM mode, angle-resolved reflectance spectra exhibited dispersive dips, indicating cavity resonance as well as grating-coupled surface plasmon polariton (SPP) excitation. In the TE mode, cavity resonance only was allowed, and broad dips appeared in the reflectance spectra. Strong optical field confinement in the ZnO layers, with the help of SPP and cavity modes, facilitated polarization-insensitive PL enhancement. Optical simulation results were in good agreement with the experimental results, supporting the suggested scenario.",

keywords = "ZnO, cavity resonance, nanograting, surface plasmon polariton",

author = "Minji Gwon and Lee, {Y. U.} and Wu, {J. W.} and Dahyun Nam and Hyeonsik Cheong and Kim, {Dong Wook}",

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T1 - Polarization-independent light emission enhancement of ZnO/Ag nanograting via surface plasmon polariton excitation and cavity resonance

AU - Gwon, Minji

AU - Lee, Y. U.

AU - Wu, J. W.

AU - Nam, Dahyun

AU - Cheong, Hyeonsik

AU - Kim, Dong Wook

PY - 2014/6/11

Y1 - 2014/6/11

N2 - In this study, we observed that the photoluminescence (PL) intensity of ZnO/Ag nanogratings was significantly enhanced compared with that of a planar counterpart under illumination of both transverse magnetic (TM) and transverse electric (TE)-mode light. In the TM mode, angle-resolved reflectance spectra exhibited dispersive dips, indicating cavity resonance as well as grating-coupled surface plasmon polariton (SPP) excitation. In the TE mode, cavity resonance only was allowed, and broad dips appeared in the reflectance spectra. Strong optical field confinement in the ZnO layers, with the help of SPP and cavity modes, facilitated polarization-insensitive PL enhancement. Optical simulation results were in good agreement with the experimental results, supporting the suggested scenario.

AB - In this study, we observed that the photoluminescence (PL) intensity of ZnO/Ag nanogratings was significantly enhanced compared with that of a planar counterpart under illumination of both transverse magnetic (TM) and transverse electric (TE)-mode light. In the TM mode, angle-resolved reflectance spectra exhibited dispersive dips, indicating cavity resonance as well as grating-coupled surface plasmon polariton (SPP) excitation. In the TE mode, cavity resonance only was allowed, and broad dips appeared in the reflectance spectra. Strong optical field confinement in the ZnO layers, with the help of SPP and cavity modes, facilitated polarization-insensitive PL enhancement. Optical simulation results were in good agreement with the experimental results, supporting the suggested scenario.

KW - ZnO

KW - cavity resonance

KW - nanograting

KW - surface plasmon polariton

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U2 - 10.1021/am5014024

DO - 10.1021/am5014024

M3 - Article

AN - SCOPUS:84902436639

SN - 1944-8244

VL - 6

SP - 8602

EP - 8605

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

IS - 11

ER -

Polarization-independent light emission enhancement of ZnO/Ag nanograting via surface plasmon polariton excitation and cavity resonance

Abstract

Keywords

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