Comparison of electrostatic and localized plasmon induced light enhancement in hybrid InGaN/GaN quantum wells

Jie Lin, Antonio Llopis, Alexi Krokhin, S. Pereira, Ian Watson, A. Neogi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The light enhancement phenomena in InGaN/GaN multi-quantum wells (MQWs) infiltrated with metal nanoparticles (NPs) are studied using resonant and off-resonant localized plasmon interactions. The emission and recombination characteristics of carriers in InGaN/GaN MQW structures with inverted hexagonal pits (IHPs) are modified distinctly depending on the nature of their interaction with the metal NPs and with the pumping and emitted photons. It is observed that the emission intensity of light is significantly enhanced when the emission energy is off-resonant to the localized plasmon frequency of the metal nanoparticles. This results in enhanced emission from MQW due to Au nanoparticles and from IHPs due to Ag nanoparticles. At resonant-plasmon frequency of the Ag NPs, the emission from MQWs is quenched due to the re-absorption of the emitted photons, or due to the drift carriers from c-plane MQWs towards the NPs because of the Coulomb forces induced by the image charge effect.
LanguageEnglish
Article number242106
Number of pages4
JournalApplied Physics Letters
Volume104
Issue number24
Early online date18 Jun 2014
DOIs
Publication statusPublished - 2014

Fingerprint

quantum wells
electrostatics
nanoparticles
augmentation
metals
photons
pumping
interactions
energy

Keywords

  • gold
  • multiple quantum wells
  • III-V semiconductors
  • nanoparticles

Cite this

Lin, Jie ; Llopis, Antonio ; Krokhin, Alexi ; Pereira, S. ; Watson, Ian ; Neogi, A. / Comparison of electrostatic and localized plasmon induced light enhancement in hybrid InGaN/GaN quantum wells. In: Applied Physics Letters. 2014 ; Vol. 104, No. 24.
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Comparison of electrostatic and localized plasmon induced light enhancement in hybrid InGaN/GaN quantum wells. / Lin, Jie; Llopis, Antonio; Krokhin, Alexi; Pereira, S.; Watson, Ian; Neogi, A.

In: Applied Physics Letters, Vol. 104, No. 24, 242106, 2014.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Comparison of electrostatic and localized plasmon induced light enhancement in hybrid InGaN/GaN quantum wells

AU - Lin, Jie

AU - Llopis, Antonio

AU - Krokhin, Alexi

AU - Pereira, S.

AU - Watson, Ian

AU - Neogi, A.

PY - 2014

Y1 - 2014

N2 - The light enhancement phenomena in InGaN/GaN multi-quantum wells (MQWs) infiltrated with metal nanoparticles (NPs) are studied using resonant and off-resonant localized plasmon interactions. The emission and recombination characteristics of carriers in InGaN/GaN MQW structures with inverted hexagonal pits (IHPs) are modified distinctly depending on the nature of their interaction with the metal NPs and with the pumping and emitted photons. It is observed that the emission intensity of light is significantly enhanced when the emission energy is off-resonant to the localized plasmon frequency of the metal nanoparticles. This results in enhanced emission from MQW due to Au nanoparticles and from IHPs due to Ag nanoparticles. At resonant-plasmon frequency of the Ag NPs, the emission from MQWs is quenched due to the re-absorption of the emitted photons, or due to the drift carriers from c-plane MQWs towards the NPs because of the Coulomb forces induced by the image charge effect.

AB - The light enhancement phenomena in InGaN/GaN multi-quantum wells (MQWs) infiltrated with metal nanoparticles (NPs) are studied using resonant and off-resonant localized plasmon interactions. The emission and recombination characteristics of carriers in InGaN/GaN MQW structures with inverted hexagonal pits (IHPs) are modified distinctly depending on the nature of their interaction with the metal NPs and with the pumping and emitted photons. It is observed that the emission intensity of light is significantly enhanced when the emission energy is off-resonant to the localized plasmon frequency of the metal nanoparticles. This results in enhanced emission from MQW due to Au nanoparticles and from IHPs due to Ag nanoparticles. At resonant-plasmon frequency of the Ag NPs, the emission from MQWs is quenched due to the re-absorption of the emitted photons, or due to the drift carriers from c-plane MQWs towards the NPs because of the Coulomb forces induced by the image charge effect.

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