title: Surface plasmon-enhanced light-emitting diodes using silver nanoparticles embedded in p-GaN.
abstract: 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.
authors.affiliation: Department of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Korea.
authors.forename: Chu-Young
authors.initials: CY
authors.lastname: Cho
authors.forename: Min-Ki
authors.initials: MK
authors.lastname: Kwon
authors.forename: Sang-Jun
authors.initials: SJ
authors.lastname: Lee
authors.forename: Sang-Heon
authors.initials: SH
authors.lastname: Han
authors.forename: Jang-Won
authors.initials: JW
authors.lastname: Kang
authors.forename: Se-Eun
authors.initials: SE
authors.lastname: Kang
authors.forename: Dong-Yul
authors.initials: DY
authors.lastname: Lee
authors.forename: Seong-Ju
authors.initials: SJ
authors.lastname: Park
mesh_terms: 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*
chemical_list: D012834:Silver; D005708:Gallium; C027235:gallium nitrate