Photoluminescence of ZrO₂-ZnO Hybrid Nanotube Arrays Produced by Electrodeposition

Abstract:

Highly ordered ZrO2 nanotube (NT) arrays were fabricated by anodization in organic electrolyte containing NH4F. The NTs have an opened porous structure at the top end. A facile electro-deposition technique was used to prepare ZnO quantum dots (QDs) in the pores of the ZrO2 NTs. Characterizations of SEM, XRD, HR-TEM were performed on the NTs. The results confirmed the formation of single-phase wurtzite ZnO nanoparticles in the ZrO2 NTs with a size around 20 nm. Photoluminescence (PL) spectra proved that the ZnO QDs coating had strongly enhanced the PL signal for blue (366nm) and green (503nm) light emissions of the hybrid NT arrays. That maybe arose from structure-dependent defects and oxygen vacancy in the hybrid layers.

• Periodical: Key Engineering Materials (Volumes 512-515)
• Pages: 1484-1487
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.512-515.1484
• Online since: June 2012
• Authors: Li Min Guo, Xiao Hui Wang, Long Tu Li
• Keywords: Electro-Deposition, Photoluminescence (PL), ZnO Quantum Dots, ZrO₂ Nanotube

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