Journal
THIN SOLID FILMS
Volume 518, Issue 16, Pages 4637-4643Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.tsf.2009.12.049
Keywords
ZnO excitons; Ag plasmons; Au plasmons; Exciton-plasmon coupling; Photoluminescence; Photoluminescence decay; Ultrafast pump-probe
Ask authors/readers for more resources
The interaction of excitons and other photoluminescent centers in semiconductors with plasmons represents the coupling of the fundamental one-particle, electron-hole excitation with the fundamental many-particle excitation in metals. We describe recent photoluminescence and pump-probe experiments that illustrate both the energetics and the dynamics of this interaction, in a model material incorporating ZnO films separated from a nanostructured plasmonic metal substrate by a variable-thickness spacer layer. We find evidence for different coupling mechanisms for the band-edge exciton and donor acceptor pair defect luminescence, and discuss the competing roles of localized surface-plasmon resonances and propagating surface-plasmon polaritons. We also present first femtosecond pump-probe lifetime measurements for the band-edge exciton with and without the presence of nearby metal nanostructures. (C) 2009 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available