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Photon energy conversion via localized surface plasmons in ZnO/Ag/ZnO nanostructures
- Source :
- Applied Surface Science. 258:5886-5891
- Publication Year :
- 2012
- Publisher :
- Elsevier BV, 2012.
-
Abstract
- Localized surface plasmons mediated photon energy conversion in ZnO/Ag/ZnO nanostructures has been investigated. Ag nano islands immersed in ZnO cause a great enhancement of visible light emission where silicon solar cells have maximum response, compared to that of ZnO single layer or Ag/ZnO bilayer structures. It is found that the visible light emission enhancement ratio increases with the thickness of the ZnO capping layer and an enhancement ratio of tenfold for 100 nm ZnO is realized. Furthermore, the intensity and peak wavelength of visible light emission are also influenced by the sizes of Ag islands. The observation of photoluminescence from ZnO/Ag/ZnO nanostructures is interpreted with theoretical calculation of localized surface plasmon resonance. The observed large enhancement of visible light emission may have potential applications in high efficiency solar cells by conversion of ultraviolet to visible light.
- Subjects :
- Photoluminescence
Materials science
Silicon
business.industry
General Physics and Astronomy
chemistry.chemical_element
Surfaces and Interfaces
General Chemistry
Photon energy
Condensed Matter Physics
medicine.disease_cause
Surfaces, Coatings and Films
chemistry
medicine
Optoelectronics
Surface plasmon resonance
business
Luminescence
Ultraviolet
Localized surface plasmon
Visible spectrum
Subjects
Details
- ISSN :
- 01694332
- Volume :
- 258
- Database :
- OpenAIRE
- Journal :
- Applied Surface Science
- Accession number :
- edsair.doi...........86706b91cea3331a934bb2f12eda4fa0