Title :
Exciton-plasmon coupling in ZnO-MgO-Au waveguide structures
Author :
Lawrie, B.L. ; Mu, R. ; Haglund, R.F.
Author_Institution :
Dept. of Phys. & Astron., Vanderbilt Univ., Nashville, TN, USA
Abstract :
The paper presents a study on the coupling of band-edge and donor-acceptor pair (DAP) photoluminescence (PL) to propagating and localized surface plasmons in sub-micron scale waveguide structures. By varying the thickness of a spacer layer between the ZnO luminescent centers and nanostructured plasmonic thin films, it was verified that Purcell enhancement of the ultraviolet ZnO band-edge emission occurred by coupling to Ag and Au surface plasmon polaritons. Enhanced DAP photoluminescence appears to result from dipole-dipole scattering by localized surface plasmons in nanoparticulate films.
Keywords :
excitons; gold; magnesium compounds; photoluminescence; plasmonics; silver; surface plasmons; waveguides; zinc compounds; Ag; Purcell enhancement; ZnO-MgO-Au; band edge emission; band edge photoluminescence; dipole-dipole scattering; donor-acceptor pair photoluminescence; exciton-plasmon coupling; localized surface plasmons; luminescent center; nanoparticulate film; nanostructured plasmonic thin film; submicron scale waveguide structure; Digital audio players; Electrons; Excitons; Gold; Photoluminescence; Physics; Plasmons; Scattering; Surface morphology; Zinc oxide;
Conference_Titel :
Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-4079-5
Electronic_ISBN :
978-1-4244-4080-1
DOI :
10.1109/CLEOE-EQEC.2009.5192750
