Zhang Geng, Chen Jun, Deng S Z, She J C, Xu N S
State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-sen (Zhongshan) University, Guangzhou 510275, PR China.
Ultramicroscopy. 2009 Apr;109(5):385-9. doi: 10.1016/j.ultramic.2008.11.002. Epub 2008 Nov 18.
The field emission properties of the screen-printed carbon nanotube (CNT) composite cathode have close relationship with its microstructure. In this study, carbon nanotube composite cold cathode with ZnO nano-particles as binding material was prepared using screen-printing method. Electric field cycles were used to post-treat the carbon nanotube composite cold cathode. During the process of electric field cycle treatment, obvious heat-induced damages were observed from the cathode. Scanning electron microscope and transmission electron microscope were employed to analyze the morphology and microstructure of the cathode. The possible mechanisms responsible for damages were discussed.
丝网印刷碳纳米管（CNT）复合阴极的场发射特性与其微观结构密切相关。在本研究中，采用丝网印刷法制备了以ZnO纳米颗粒为粘结材料的碳纳米管复合冷阴极。用电场循环对碳纳米管复合冷阴极进行后处理。在电场循环处理过程中，观察到阴极有明显的热致损伤。利用扫描电子显微镜和透射电子显微镜分析了阴极的形貌和微观结构。讨论了造成损伤的可能机制。
