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High-current field emission from a vertically aligned carbon nanotube field emitter array
| Content Provider | Semantic Scholar |
|---|---|
| Author | Thong, John T. L. Oon, Chin Hin Zhang, Wen Da Gan, Leong Ming |
| Copyright Year | 2001 |
| Abstract | Arrays of vertically aligned carbon nanotubes (CNTs) were grown on a patterned sputtered cobalt film by chemical vapor deposition from ethylenediamine at 900 °C. Each square array comprises a moderate density of nanotubes with an average height of 90 μm covering a total area of 3.6×10−3 cm2. Field emission measurements were carried out on individual arrays at pressures below 10−8 mbar. The spacing between the anode and the top of the CNT array is 935 μm and a total current of 2 mA could be obtained at 2.5 kV. A Fowler–Nordheim plot of the I–V data shows an unusually high field enhancement factor at lower fields. At an average field strength of 1.925 V/μm, the corresponding emission current density is 130 mA/cm2. This emission current was found to be very stable, with short-term fluctuations (5 Hz measurement bandwidth) of no more than ±1.5%, while the current drifted less than 1.5% over a test period of 20 h. |
| Starting Page | 2811 |
| Ending Page | 2813 |
| Page Count | 3 |
| File Format | PDF HTM / HTML |
| DOI | 10.1063/1.1412590 |
| Alternate Webpage(s) | https://www.ece.nus.edu.sg/stfpage/elettl/PDF%20files/E-publications/2001-APL-79-ThongJTL-High-current%20field%20emission.pdf |
| Alternate Webpage(s) | https://doi.org/10.1063/1.1412590 |
| Volume Number | 79 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
