| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2009: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Research Abstract |
The influence of geometry of a carbon nanotube(CNT) pillar array on its field-emission properties was investigated for the purpose of designing a high-efficiency CNT field-emitter array. Here the dependence of the field-emission(FE) properties(turn-on voltage and emission site distribution) on the pillar pitch and the shape was examined. Our results showed that the change of the pillar shape from a square shape to a"mountain shape", which was fabricated by the self-aligned CNT growth process, improved the FE properties. This improvement is due to the dispersed growth morphology, which reduces the field-screening effect at the top of the mountain-shaped pillars.
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