2012 Fiscal Year Final Research Report
High Efficiency Field Electron Source Using Diamond Nanopowders
| Project/Area Number |
22560347
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Electron device/Electronic equipment
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| Research Institution | Toyo University |
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Principal Investigator |
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| Project Period (FY) |
2010 – 2012
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| Keywords | 電界放射 / ダイヤモンド / 微粒子 / 仕事関数 |
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| Research Abstract |
The field emitters consisted of diamond nanopowders with sharp edges were fabricated and their field emission properties were investigated. Threshold voltage at which the emission current begins to flow is one of the most important parameter of the field emitter. The threshold voltage of fabricated emitters depended on the annealing temperatures. The origin of the phenomena was thought to be that the surface condition of the diamond nanopowders was changed by the annealing. The work function of the diamond nanopowders estimated by Richardson-Dushman plots was 1.87 eV. Since this value was much smaller than that of the conventional semiconductors and metals, the diamond nanopowders was good candidate for the material of field emitters.
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