Fabrication of zinc oxide nanostructures via a low-temperature method and investigation of their photoluminescence properties
Abstract
ZnO nanorods were successfully synthesized by the low-temperature hydrothermal method on a grid formed by cross-weaving stainless-steel wires. Our method includes seeding process by simple dip-coating technique, followed by post annealing process and hydrothermal growth process of ZnO nanostructures. When the nanorods were synthesized a second time, their size increased and the maximum of the photoluminescence spectrum shifted toward the larger wavelength. It was observed that the shift of the PL emission band was associated with the increase in the size of the nanostructures. At the same time, the photoluminescence spectra of the samples showed an increase in the emission band associated with defects. Considering that the defect observed in the PL spectrum is interstitial oxygen, the increase in the emission band corresponding to this defect in the doubly synthesized samples indicates that they are a bulk defect.
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Copyright (c) 2024 Р. Жалолов, Б. Рустамова (Автор)
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