Processes and Research of Carbon Nanotube Field Emission Electron Source

• Main Authors: Feng Xiang Liu, 劉鳳翔
• Other Authors: Senfar Wen
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/18022103617842045982

碩士 === 中華大學 === 電機工程學系碩士班 === 90 === In this thesis, we research field emission characteristic of Carbon Nanotubes, and fabricate the CNTs cathode. Carbon nanotubes (CNTs) cold cathodes were fabricated to replace the hot cathodes of cathode ray tubes (CRTs), because conventional hot cathode must be heated about 680℃. But now we don’t heat the cathode by using Carbon Nanotubes in this work. We just used a DC bias，then the emitter current was emitted to vacuum. It was compared Arc CNTs’ and CVD CNTs’ field emission characteristic, and used a printer to print the cathode once or twice. Then we use a tape to enhance field emission current. In this research, Arc CNTs’ field emission characteristic is better than CVD CNTs’, the result makes us to know that structure is very important. We also packaged the cathode to measured the I-V curve in a 17-inch CRT using the traditional method, and find a good result. Finally, we use nanosize Silver particle, because find a problem by SEM. And we believe the method can be better than previous method.