南京师范大学学报:工程技术版
南京師範大學學報:工程技術版
남경사범대학학보:공정기술판
Journal of Nanjing Nor Univ: Eng and Technol
2012年
2期
24-27
,共4页
热阴极%碳纳米管%化学气相沉积%场致发射%大电流
熱陰極%碳納米管%化學氣相沉積%場緻髮射%大電流
열음겁%탄납미관%화학기상침적%장치발사%대전류
thermal cathode%carbon nanotube%chemical vapor deposition%field emission%large current
在传统的热阴极表面制备催化剂,通过自加热化学气相沉积法,成功地在热阴极表面生长出碳纳米管薄膜.碳纳米管薄膜具有较好的场致发射能力,通过二极结构下对该阴极的发射性能测试,得到了最大电流为5.5mA的场致发射电流.该方法可以在不改变现有热阴极材料和器件结构的基础上,得到稳定的冷阴极发射电流,为热阴极向冷阴极过渡的研究提供了一种途径.
在傳統的熱陰極錶麵製備催化劑,通過自加熱化學氣相沉積法,成功地在熱陰極錶麵生長齣碳納米管薄膜.碳納米管薄膜具有較好的場緻髮射能力,通過二極結構下對該陰極的髮射性能測試,得到瞭最大電流為5.5mA的場緻髮射電流.該方法可以在不改變現有熱陰極材料和器件結構的基礎上,得到穩定的冷陰極髮射電流,為熱陰極嚮冷陰極過渡的研究提供瞭一種途徑.
재전통적열음겁표면제비최화제,통과자가열화학기상침적법,성공지재열음겁표면생장출탄납미관박막.탄납미관박막구유교호적장치발사능력,통과이겁결구하대해음겁적발사성능측시,득도료최대전류위5.5mA적장치발사전류.해방법가이재불개변현유열음겁재료화기건결구적기출상,득도은정적랭음겁발사전류,위열음겁향랭음겁과도적연구제공료일충도경.
Based on a traditional thermal cathode, catalyst material layer has been deposited, and then carbon nanotube layer has been synthesized on the surface of the thermal cathode by self-heated chemical vapor deposition. As is known, carbon nanotube has excellent field emission properties, and the field emission capability of this cathode has been tested in a diode structure, a maximum 5.4mA current has been obtained. We provide a new way to realize field emission large current on a traditional thermal cathode device while the cathode material and the whole structure need not be changed.