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標題: Angle-Resolved Field Emission of Individual Carbon Nanotubes
作者: Lee, M.W.;Lai, W.C.;Kao, Y.Y.;Hsieh, T.L.;Huang, K.J.
李明威
關鍵字: chemical-vapor-deposition;electron-emission;ray tube;in-situ;contamination;emitters
日期: 2009
Issue Date: 2012-12-07 17:02:04 (UTC+8)
關連: Japanese Journal of Applied Physics, Volume 48, Issue 7.
摘要: Individual multiwalled carbon nanotube (CNT) emitters were fabricated on a Si substrate by electron-beam lithography. The CNT emitter had seven anodes with orientation theta ranging from 0-60 degrees with respect to the CNT axis. Field-emission experiments revealed that the emission current l was largest along the theta = 0 degrees direction and decreased monotonically with increasing theta; at theta = 56 degrees l decreased to one-thirtieth of its value at 0 degrees. The emission surface area also decreased by four orders of magnitude as theta increased from 0 to 56 degrees. In contrast, the field enhancement factor increased by a factor of five in the same angular range. It was found that 80% of the emission current was contained within 20, from the CNT axis. The results indicate that a CNT emits electrons most effectively along its CNT axis. (C) 2009 The Japan Society of Applied Physics DOI: 10.1143/JJAP.48.072402
Relation: Japanese Journal of Applied Physics
Appears in Collections:[依資料類型分類] 期刊論文
[依教師分類] 李明威
[依教師分類] 李明威

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