Surface plasmon-enhanced light-emitting diodes using silver nanoparticles embedded in p-GaN.
We demonstrate the surface plasmon-enhanced blue light-emitting diodes (LEDs) using Ag nanoparticles embedded in p-GaN. A large increase in optical output power of 38% is achieved at an injection current of 20 mA due to an improved internal quantum efficiency of the LEDs. The enhancement of optical output power is dependent on the density of the Ag nanoparticles. This improvement can be attributed to an increase in the spontaneous emission rate through resonance coupling between the excitons in multiple quantum wells and localized surface plasmons in Ag nanoparticles embedded in p-GaN.
Cho
Chu-Young
CY
Department of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Korea.
Kwon
Min-Ki
MK
Lee
Sang-Jun
SJ
Han
Sang-Heon
SH
Kang
Jang-Won
JW
Kang
Se-Eun
SE
Lee
Dong-Yul
DY
Park
Seong-Ju
SJ
D004867:Equipment Design; D005708:Gallium / Q000737:chemistry*; D008027:Light; D053768:Metal Nanoparticles / Q000737:chemistry*; D018625:Microscopy, Atomic Force / Q000379:methods; D036103:Nanotechnology / Q000379:methods; D055095:Optics and Photonics; D012834:Silver / Q000737:chemistry*; D020349:Surface Plasmon Resonance / Q000379:methods*
D012834:Silver; D005708:Gallium; C027235:gallium nitrate