Grain size dependence of surface plasmon enhanced photoluminescence

Xiaoying Xu; Mitsuru Funato; Yoichi Kawakami; Koichi Okamoto; Kaoru Tamada

doi:10.1364/OE.21.003145

Grain size dependence of surface plasmon enhanced photoluminescence

Xiaoying Xu, Mitsuru Funato, Yoichi Kawakami, Koichi Okamoto, Kaoru Tamada

Department of Fundamental Organic Chemistry

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

20 Citations (Scopus)

Abstract

Photoluminescence (PL) in the InGaN quantum well based lightemitting diodes (LED) is greatly mediated through the coupling with the Surface Plasmons (SPs) at the interface of the sputtered Ag film. SPs coupled PL is independently tuned through controlling the grain size of the sputtered Ag films. The grain size of ∼50 nm exhibits the maximum light extraction efficiency (LEE) at the wavelength of 460 nm. This grain size agrees with the periodic lattice constant of the grating structure in the calculation, where the momentum mismatch between the SPs and the radiative light can be compensated.

Original language	English
Pages (from-to)	3145-3151
Number of pages	7
Journal	Optics Express
Volume	21
Issue number	3
DOIs	https://doi.org/10.1364/OE.21.003145
Publication status	Published - Feb 11 2013

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

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AU - Funato, Mitsuru

AU - Kawakami, Yoichi

AU - Okamoto, Koichi

AU - Tamada, Kaoru

PY - 2013/2/11

Y1 - 2013/2/11

N2 - Photoluminescence (PL) in the InGaN quantum well based lightemitting diodes (LED) is greatly mediated through the coupling with the Surface Plasmons (SPs) at the interface of the sputtered Ag film. SPs coupled PL is independently tuned through controlling the grain size of the sputtered Ag films. The grain size of ∼50 nm exhibits the maximum light extraction efficiency (LEE) at the wavelength of 460 nm. This grain size agrees with the periodic lattice constant of the grating structure in the calculation, where the momentum mismatch between the SPs and the radiative light can be compensated.

AB - Photoluminescence (PL) in the InGaN quantum well based lightemitting diodes (LED) is greatly mediated through the coupling with the Surface Plasmons (SPs) at the interface of the sputtered Ag film. SPs coupled PL is independently tuned through controlling the grain size of the sputtered Ag films. The grain size of ∼50 nm exhibits the maximum light extraction efficiency (LEE) at the wavelength of 460 nm. This grain size agrees with the periodic lattice constant of the grating structure in the calculation, where the momentum mismatch between the SPs and the radiative light can be compensated.

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Grain size dependence of surface plasmon enhanced photoluminescence

Abstract

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