TITLE

Surface plasmon-enhanced light emission using silver nanoparticles embedded in ZnO

AUTHOR(S)
Xiao, X. H.; Ren, F.; Zhou, X. D.; Peng, T. C.; Wu, W.; Peng, X. N.; Yu, X. F.; Jiang, C. Z.
PUB. DATE
August 2010
SOURCE
Applied Physics Letters;8/16/2010, Vol. 97 Issue 7, p071909
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The Ag nanoparticles-SiO2–ZnO film sandwiched structure was fabricated by depositing ZnO films on silica substrates which had been implanted by Ag ions. Enhancement of emission of the sandwiched structure was observed. The enhancement emission is caused by the resonant coupling between the surface plasmons of Ag and the spontaneous emission of ZnO. The enhancement mechanism is confirmed by optical absorption spectra, transmission electron microscopy, and time-resolved photoluminescence. The key is to deposit ZnO on Ag nanoparticles covered with silica to prevent oxidation of Ag by direct contact with ZnO. This structure will be very useful for highly efficient optoelectronic devices.
ACCESSION #
52997923

 

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