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.
| Original language | English |
|---|---|
| Article number | 092002 |
| Journal | Applied Physics Express |
| Volume | 8 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2015 Sep 1 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Engineering(all)
- Physics and Astronomy(all)
Cite this
Enhanced optical properties of nanopillar light-emitting diodes by coupling localized surface plasmon of Ag/SiO2 nanoparticles. / Yun, Jin Hyeon; Cho, Han Su; Bae, Kang Bin; Sudhakar, Selvakumar; Kang, Yeon Su; Lee, Jong Soo; Polyakov, Alexander Y.; Lee, In-Hwan.
In: Applied Physics Express, Vol. 8, No. 9, 092002, 01.09.2015.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Enhanced optical properties of nanopillar light-emitting diodes by coupling localized surface plasmon of Ag/SiO2 nanoparticles
AU - Yun, Jin Hyeon
AU - Cho, Han Su
AU - Bae, Kang Bin
AU - Sudhakar, Selvakumar
AU - Kang, Yeon Su
AU - Lee, Jong Soo
AU - Polyakov, Alexander Y.
AU - Lee, In-Hwan
PY - 2015/9/1
Y1 - 2015/9/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84940975747&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84940975747&partnerID=8YFLogxK
U2 - 10.7567/APEX.8.092002
DO - 10.7567/APEX.8.092002
M3 - Article
AN - SCOPUS:84940975747
VL - 8
JO - Applied Physics Express
JF - Applied Physics Express
SN - 1882-0778
IS - 9
M1 - 092002
ER -