Promising field electron emission performance of vertically aligned one dimensional (1D) brookite (β) TiO2 nanorods

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2016
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Devan, Rupesh S.
Ma, Yuan-Ron
More, Mahendra A.
Khare, Ruchita T.
Antad, Vivek V.
Patil, Ranjit A.
Thakare, Vishal P.
Dhayal, Rajendra S.
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urn:nbn:de:bsz:352-0-372533
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10.1039/C6RA20747B
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RSC Advances ; 6 (2016), 101. - pp. 98722-98729. - eISSN 2046-2069
Abstract
We evidence field-electron emission (FE) studies on the large-area array of one-dimensional (1D) brookite (β) TiO2 nanorods. The pure 1D β-TiO2 nanorods of 10 nm width and 760 nm long were synthesized on Si substrate utilizing hot-filament metal vapor deposition technique. X-ray diffraction (XRD) and transmission electron microscopy (TEM) analysis evidenced the β-TiO2 nanorods to be composed of orthorhombic crystals in brookite (β) phase. X-ray photoemission spectroscopy (XPS) revealed the formation of pure stoichiometric (i.e. 1 : 1.98) 1D TiO2 nanorods. The values of turn-on field, required to draw current density of 10 μA cm−2, was observed 3.9 V μm−1 for pristine 1D β-TiO2 nanorods emitters, which were found significantly lower than doped/undoped 1D TiO2 nanostructures (i.e. nanotubes, nanowires, nanorods) based field emitters. The enhanced FE behavior of the TiO2/Si emitter can be attributed to modulation of electronic properties due to the high aspect ratio of vertically aligned TiO2 nanorods. Furthermore, the orthodox emission situation of pristine TiO2/Si emitters exhibit good emission stability and reveal their potentials as promising FE material.
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530 Physics
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field-electron, emission, brookite, nanorods
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ISO 690DEVAN, Rupesh S., Yuan-Ron MA, Mahendra A. MORE, Ruchita T. KHARE, Vivek V. ANTAD, Ranjit A. PATIL, Vishal P. THAKARE, Rajendra S. DHAYAL, Lukas SCHMIDT-MENDE, 2016. Promising field electron emission performance of vertically aligned one dimensional (1D) brookite (β) TiO2 nanorods. In: RSC Advances. 6(101), pp. 98722-98729. eISSN 2046-2069. Available under: doi: 10.1039/C6RA20747B
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@article{Devan2016Promi-35972,
  year={2016},
  doi={10.1039/C6RA20747B},
  title={Promising field electron emission performance of vertically aligned one dimensional (1D) brookite (β) TiO<sub>2</sub> nanorods},
  number={101},
  volume={6},
  journal={RSC Advances},
  pages={98722--98729},
  author={Devan, Rupesh S. and Ma, Yuan-Ron and More, Mahendra A. and Khare, Ruchita T. and Antad, Vivek V. and Patil, Ranjit A. and Thakare, Vishal P. and Dhayal, Rajendra S. and Schmidt-Mende, Lukas}
}
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