场发射冷阴极材料作为真空微电子器件的核心部件,在真空微电子场发射的研究与应用中占有极其重要的地位.目前碳基材料金刚石、类金刚石和碳纳米管在场发射冷阴级的研究中居统治地位.阐述了以上3种材料的制备工艺,发射特性,提出了改进其发射性能的措施,并对它们目前存在的问题及其应用前景进行了展望.
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