Enhancement of visible light emission from Tb-doped ZnO nanorods grown on silicon substrate
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We report on the enhancement of visible light emission from Tb-doped ZnO nanorods (NRs) fabricated on Si substrates usinga simple hydrothermal process without post-thermal annealing. Structural and chemical investigations revealed that the Tbatoms were successfully incorporated into the ZnO crystal lattice without forming Tb-related alloys or impurities. Photoluminescence spectra show the typical double spectral shape of ZnO nanostructures with emission bands in the UV andvisible spectral range. The visible light-emission increased linearly with the Tb-content in the solution. The emissionmechanism was verified based on the energy band structure of the Tb-doped ZnO NRs.
Abstract
We report on the enhancement of visible light emission from Tb-doped ZnO nanorods (NRs) fabricated on Si substrates usinga simple hydrothermal process without post-thermal annealing. Structural and chemical investigations revealed that the Tbatoms were successfully incorporated into the ZnO crystal lattice without forming Tb-related alloys or impurities. Photoluminescence spectra show the typical double spectral shape of ZnO nanostructures with emission bands in the UV andvisible spectral range. The visible light-emission increased linearly with the Tb-content in the solution. The emissionmechanism was verified based on the energy band structure of the Tb-doped ZnO NRs.
참고문헌 (14)
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