Intense field electron emission source designed from large area array of dense rutile TiO2 nanopillars
| Autor: | Prashant K. Bankar, Mahendra A. More, Parameshwar R. Chikate, Rupesh S. Devan, Pravin N. Didwal |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science business.industry Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics Cathode Electronic Optical and Magnetic Materials law.invention Field electron emission X-ray photoelectron spectroscopy Rutile law Electric field 0103 physical sciences Optoelectronics Nanorod Electrical and Electronic Engineering business Current density Nanopillar |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 30:2935-2941 |
| ISSN: | 1573-482X 0957-4522 |
| DOI: | 10.1007/s10854-018-00570-9 |
| Popis: | The uniform and highly dense nanopillars of rutile TiO2 were synthesized by the hydrothermal method and demonstrated as a highly intense source for the application in field electron emission. The TiO2 nanopillars formed by a bunch of the many nanorods were nearly perpendicular to FTO substrate. The stoichiometric composition and chemical properties of Ti and O were confirmed by X-ray photoelectron spectroscopy. The rutile TiO2 nanopillars transferred on the carbon tape to prepare cathode for field emission (FE) performance exhibit the superior current density of 1.03 mA/cm2 at the applied electric field of 3.2 V/µm, and the lower turn-on field of 1.2 V/µm defined at a current density of 10 µA/cm2. The result of the FE revealed that rutile TiO2 nanostructure enhances the FE without any coating, doping, and surface modifications. |
| Databáze: | OpenAIRE |
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