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- Title
Probing the effect of molar concentration on TiO<sub>2</sub> nanorod/nanoflower films toward enhanced field electron emission properties.
- Authors
Vairale, Priti; Deore, Amol; Hase, Yogesh; Waghmare, Ashish; Borate, Haribhau; Pandharkar, Subhash; Jadkar, Vijaya; More, Mahendra; Al-Enizi, Abdullah M.; Shaikh, Shoyebmohamad F.; Jadkar, Sandesh
- Abstract
In this work, we report on the synthesis of rutile-TiO2 nanostructures for field electron emission studies using a simple one-step hydrothermal method at various TiCl4 molar concentrations. The formation of the pure and tetragonal rutile phase of TiO2 films has been confirmed by X-ray diffraction and Raman spectroscopy. The scanning electron microscopy analysis shows TiO2 has nanorods and nanoflower-like morphology with sharp petals. UV–Visible spectroscopy study exhibited broad absorption in the visible range with a band gap energy ranging from 2.32 to 3.01 eV over the entire range of TiCl4 molar concentration varied. A possible crystal growth mechanism and electron emission properties of TiO2 films are also discussed. At 0.6 M molar concentration of TiCl4, rutile-TiO2 film exhibited excellent field emission properties, including a low turn-on field of 1.11 V/µm for 10 µA/cm2, a maximum current density of 331.91 µA/cm2 at the applied bias of 3.44 V/μm, and superior current stability for three hours at a preset current of 1.08 µA. The results revealed that the rutile-TiO2 nanostructures can be used for various practical applications such as optoelectronics, biomedical devices, and supercapacitors.
- Publication
Journal of Materials Science: Materials in Electronics, 2024, Vol 35, Issue 18, p1
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-024-12992-9