期刊
APPLIED PHYSICS LETTERS
卷 97, 期 7, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3480417
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资金
- National Basic Research Program of China (973 Program [2009CB939704]
- National Nature Science Foundation of China [10775109]
- Young Chenguang Project of Wuhan City [200850731371, 201050231055]
- Wuhan University [1082010]
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. (C) 2010 American Institute of Physics. [doi:10.1063/1.3480417]
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