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Enhanced optical properties of nanopillar light-emitting diodes by coupling localized surface plasmon of Ag/SiO2 nanoparticles

Title
Enhanced optical properties of nanopillar light-emitting diodes by coupling localized surface plasmon of Ag/SiO2 nanoparticles
Authors
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
2015-09
Citation
Applied Physics Express, 8(9)
Type
Article
Article Type
Article
Keywords
Active RegionsElectroluminescenceElectroluminescence IntensityEnergy CouplingsInGaN/GaN Quantum WellLightLight-Emitting DiodesLocalized Surface PlasmonNano-StructuresNanoparticlesOptical EnhancementsOptical PropertiesPhotoluminescencePhotoluminescence DecayPlasmonsSemiconductor Quantum WellsSilverSpontaneous Emission RatesSurface Plasmon Resonance
ISSN
1882-0778
Abstract
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.
URI
http://hdl.handle.net/20.500.11750/2850
DOI
10.7567/APEX.8.092002
Publisher
Institute of Physics Publishing
Related Researcher
  • Author Lee, Jong Soo Multifuntional Nanomaterials & Energy Devices Lab(MNEDL)
  • Research Interests
Files:
There are no files associated with this item.
Collection:
Energy Science and EngineeringMNEDL(Multifunctional Nanomaterials & Energy Devices Lab)1. Journal Articles


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