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- W1973671667 abstract "The field emission (FE) properties of TiO2 nanotube arrays (TNAs) fabricated by anodization are dramatically enhanced by ammonia annealing at a low temperature of 90 °C with various annealing durations of 5–15 h, which can spontaneously tailor the as-anodized amorphous TNAs to be an anatase hierarchical structure of worm-like TiO2 decorated TNAs, and simultaneously implant nitrogen into the hierarchical structure. Compared to the as-anodized TNAs, the turn-on field of ammonia annealed TNAs are significantly dropped from 23.11 to 2.94 V/μm, and related to the annealing time. Importantly, the optimized sample of ammonia annealed TNAs treated for 10 h exhibits excellent FE properties involving both a low turn-on field of 2.94 V/μm, a high FE current density of about 3.35 mA/cm2 at 7.35 V/μm, and a remarkable FE stability. The substantially enhanced FE properties can be attributed to the combination of the optimized morphology, the improved conductivity, and the presence of localized oxygen vacancy states and N 2p states created by N-doping of ammonia annealed TNAs." @default.
- W1973671667 created "2016-06-24" @default.
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- W1973671667 date "2014-04-01" @default.
- W1973671667 modified "2023-10-17" @default.
- W1973671667 title "Low-temperature ammonia annealed TiO2 nanotube arrays: Synergy of morphology improvement and nitrogen doping for enhanced field emission" @default.
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- W1973671667 doi "https://doi.org/10.1016/j.tsf.2014.01.066" @default.
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