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Enhanced optical properties of nanopillar light-emitting diodes by coupling localized surface plasmon of Ag/SiO2 nanoparticles
- Enhanced optical properties of nanopillar light-emitting diodes by coupling localized surface plasmon of Ag/SiO2 nanoparticles
- Yun, JH[Yun, Jin-Hyeon]; Cho, HS[Cho, Han-Su]; Bae, KB[Bae, Kang-Bin]; Sudhakar, S[Sudhakar, Selvakumar]; Kang, YS[Kang, Yeon Su]; Lee, JS[Lee, Jong-Soo]; Polyakov, AY[Polyakov, Alexander Y.]; Lee, IH[Lee, In-Hwan]
- DGIST Authors
- Kang, YS[Kang, Yeon Su]; Lee, JS[Lee, Jong-Soo]
- Issue Date
- Applied Physics Express, 8(9)
- Article Type
- Active Regions; Electroluminescence; Electroluminescence Intensity; Energy Couplings; InGaN/GaN Quantum Well; Light; Light-Emitting Diodes; Localized Surface Plasmon; Nano-Structures; Nanoparticles; Optical Enhancements; Optical Properties; Photoluminescence; Photoluminescence Decay; Plasmons; Semiconductor Quantum Wells; Silver; Spontaneous Emission Rates; Surface Plasmon Resonance
- We fabricated nanopillar light-emitting diodes (LEDs) embedded with Ag/SiO2 nanoparticles, and investigated the energy coupling processes between the localized surface plasmons of nanoparticles and the active quantum well regions of nanopillar LEDs. These nanoparticle-embedded nanopillar LEDs showed considerable increases in photoluminescence and electroluminescence intensities, compared with reference nanopillar LEDs. The observed optical enhancement was explained by the increased spontaneous emission rate caused by energy coupling from excitons in the InGaN/GaN quantum well active region of the LEDs to the localized surface plasmon modes of the Ag/SiO2 nanoparticles. A strongly enhanced characteristic photoluminescence decay also confirmed such an explanation. © 2015 The Japan Society of Applied Physics.
- Institute of Physics Publishing
- Related Researcher
Lee, Jong Soo
Multifuntional Nanomaterials & Energy Devices Lab(MNEDL)
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- Energy Science and EngineeringMNEDL(Multifunctional Nanomaterials & Energy Devices Lab)1. Journal Articles
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