AI Article Synopsis
- Researchers created silver nanoparticle arrays using a magnetron sputtering method and anodic aluminum oxide templates to improve UV light emission from ZnO through surface plasmon resonance.
- Simulations showed that the optimal surface plasmon resonance wavelength was influenced by the size and spacing of the silver nanoparticles, with a specific configuration (40 nm diameter and 100 nm spacing) doubling the photoluminescence intensity of ZnO.
- The enhancement in UV emission was linked to the interaction between surface plasmons in the silver nanoparticles and excitons in ZnO, resulting in increased spontaneous emission rates and stronger local electromagnetic fields.
Article Abstract
Periodical silver nanoparticle (NP) arrays were fabricated by magnetron sputtering method with anodic aluminum oxide templates to enhance the UV light emission from ZnO by the surface plasmon resonance effect. Theoretical simulations indicated that the surface plasmon resonance wavelength depended on the diameter and space of Ag NP arrays. By introducing Ag NP arrays with the diameter of 40 nm and space of 100 nm, the photoluminescence intensity of the near band-edge emission from ZnO was twofold enhanced. Time-resolved photoluminescence measurement and energy band analysis indicated that the UV light emission enhancement was attributed to the coupling between the surface plasmons in Ag NP arrays and the excitons in ZnO with the improved spontaneous emission rate and enhanced local electromagnetic fields.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7791003 | PMC |
| http://dx.doi.org/10.1186/s11671-020-03470-2 | DOI Listing |
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