We report on the enhancement of visible light emission from Tb-doped ZnO nanorods (NRs) fabricated on Si substrates using a simple hydrothermal process without post-thermal annealing. Structural and chemical investigations revealed that the Tb atoms 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 and visible spectral range. The visible light-emission increased linearly with the Tb-content in the solution. The emission mechanism was verified based on the energy band structure of the Tb-doped ZnO NRs.
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Indian Inst Technol, Dept Phys, Kharagpur 721302, W Bengal, IndiaIndian Inst Technol, Dept Phys, Kharagpur 721302, W Bengal, India
Gogurla, Narendar
Bayan, Sayan
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Indian Inst Technol, Dept Phys, Kharagpur 721302, W Bengal, IndiaIndian Inst Technol, Dept Phys, Kharagpur 721302, W Bengal, India
Bayan, Sayan
Chakrabarty, Poulomi
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Indian Inst Technol, Sch Nanosci & Technol, Kharagpur 721302, W Bengal, IndiaIndian Inst Technol, Dept Phys, Kharagpur 721302, W Bengal, India
Chakrabarty, Poulomi
Ray, Samit Kumar
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Indian Inst Technol, Dept Phys, Kharagpur 721302, W Bengal, India
Indian Inst Technol, Sch Nanosci & Technol, Kharagpur 721302, W Bengal, India
SN Bose Natl Ctr Basic Sci, Kolkata, IndiaIndian Inst Technol, Dept Phys, Kharagpur 721302, W Bengal, India