Optical properties of highly polarized InGaN light-emitting diodes modified by plasmonic metallic grating

Hong Chen; Houqiang Fu; Zhijian Lu; Xuanqi Huang; Yuji Zhao

doi:10.1364/OE.24.00A856

Optical properties of highly polarized InGaN light-emitting diodes modified by plasmonic metallic grating

Hong Chen, Houqiang Fu, Zhijian Lu, Xuanqi Huang, Yuji Zhao

Electrical, Computer, and Energy Engineering, School of (IAFSE-ECEE)

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

27 Scopus citations

Abstract

We implement finite-difference time-domain (FDTD) method to simulate the optical properties of highly polarized InGaN light emitting diodes (LEDs) coupled with metallic grating structure. The Purcell factor (F_p), light extraction efficiency (LEE), internal quantum efficiency (IQE), external quantum efficiency (EQE), and modulation frequency are calculated for different polarized emissions. Our results show that light polarization has strong impact on F_p and LEE of LEDs due to their coupling effects with the surface plasmons (SPs) generated by metallic grating. F_p as high as 34 and modulation frequency up to 5.4 GHz are obtained for a simulated LED structure. Furthermore, LEE, IQE and EQE can also be enhanced by tuning the coupling between polarized emission and SPs. These results can serve as guidelines for the design and fabrication of high efficiency and high speed LEDs for the applications of solid-state lighting and visible-light communication.

Original language	English (US)
Pages (from-to)	A856-A867
Journal	Optics Express
Volume	24
Issue number	10
DOIs	https://doi.org/10.1364/OE.24.00A856
State	Published - May 16 2016

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1364/OE.24.00A856

Cite this

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title = "Optical properties of highly polarized InGaN light-emitting diodes modified by plasmonic metallic grating",

abstract = "We implement finite-difference time-domain (FDTD) method to simulate the optical properties of highly polarized InGaN light emitting diodes (LEDs) coupled with metallic grating structure. The Purcell factor (Fp), light extraction efficiency (LEE), internal quantum efficiency (IQE), external quantum efficiency (EQE), and modulation frequency are calculated for different polarized emissions. Our results show that light polarization has strong impact on Fp and LEE of LEDs due to their coupling effects with the surface plasmons (SPs) generated by metallic grating. Fp as high as 34 and modulation frequency up to 5.4 GHz are obtained for a simulated LED structure. Furthermore, LEE, IQE and EQE can also be enhanced by tuning the coupling between polarized emission and SPs. These results can serve as guidelines for the design and fabrication of high efficiency and high speed LEDs for the applications of solid-state lighting and visible-light communication.",

author = "Hong Chen and Houqiang Fu and Zhijian Lu and Xuanqi Huang and Yuji Zhao",

note = "Publisher Copyright: {\textcopyright}2016 Optical Society of America.",

year = "2016",

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doi = "10.1364/OE.24.00A856",

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T1 - Optical properties of highly polarized InGaN light-emitting diodes modified by plasmonic metallic grating

AU - Chen, Hong

AU - Fu, Houqiang

AU - Lu, Zhijian

AU - Huang, Xuanqi

AU - Zhao, Yuji

PY - 2016/5/16

Y1 - 2016/5/16

N2 - We implement finite-difference time-domain (FDTD) method to simulate the optical properties of highly polarized InGaN light emitting diodes (LEDs) coupled with metallic grating structure. The Purcell factor (Fp), light extraction efficiency (LEE), internal quantum efficiency (IQE), external quantum efficiency (EQE), and modulation frequency are calculated for different polarized emissions. Our results show that light polarization has strong impact on Fp and LEE of LEDs due to their coupling effects with the surface plasmons (SPs) generated by metallic grating. Fp as high as 34 and modulation frequency up to 5.4 GHz are obtained for a simulated LED structure. Furthermore, LEE, IQE and EQE can also be enhanced by tuning the coupling between polarized emission and SPs. These results can serve as guidelines for the design and fabrication of high efficiency and high speed LEDs for the applications of solid-state lighting and visible-light communication.

AB - We implement finite-difference time-domain (FDTD) method to simulate the optical properties of highly polarized InGaN light emitting diodes (LEDs) coupled with metallic grating structure. The Purcell factor (Fp), light extraction efficiency (LEE), internal quantum efficiency (IQE), external quantum efficiency (EQE), and modulation frequency are calculated for different polarized emissions. Our results show that light polarization has strong impact on Fp and LEE of LEDs due to their coupling effects with the surface plasmons (SPs) generated by metallic grating. Fp as high as 34 and modulation frequency up to 5.4 GHz are obtained for a simulated LED structure. Furthermore, LEE, IQE and EQE can also be enhanced by tuning the coupling between polarized emission and SPs. These results can serve as guidelines for the design and fabrication of high efficiency and high speed LEDs for the applications of solid-state lighting and visible-light communication.

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Optical properties of highly polarized InGaN light-emitting diodes modified by plasmonic metallic grating

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