1. Enhanced UV Emission from ZnO on Silver Nanoparticle Arrays by the Surface Plasmon Resonance Effect
- Author
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Xiao Wang, Qiong Ye, Li-Hua Bai, Xi Su, Ting-Ting Wang, Tao-Wei Peng, Xiao-Qi Zhai, Yi Huo, Hao Wu, Chang Liu, Yu-Yu Bu, Xiao-Hua Ma, Yue Hao, and Jin-Ping Ao
- Subjects
Surface plasmons ,Zinc oxide ,Silver nanoparticle arrays ,Anodic aluminum oxide templates ,Materials of engineering and construction. Mechanics of materials ,TA401-492 - Abstract
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.
- Published
- 2021
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