中文摘要：

研制了特定比例的纳米金刚石浆料，采用了丝网印刷工艺在石墨衬底上大面积印制了纳米金刚石场发射薄膜，实验探索了石墨衬底纳米金刚石薄膜的烧结工艺和后处理过程，利用扫描电镜（SEM）观察了纳米金刚石膜的表面形貌，经后处理的薄膜中纳米金刚石露出薄膜表面，纳米金刚石的棱角是天然的发射体。采用本课题组研制的多功能场发射测试台在10^-6Pa的真空条件下进行了场发射特性的测试，结果发现石墨上低成本大面积印刷的纳米金刚石薄膜具有均匀稳定的场发射特性，作为电子器件的理想冷阴极发射，可在宇宙飞船、原予反应堆等恶劣条件下工作的平面显示器中得到应用。

英文摘要：

In order to search optimum large area cathode material in field emission,we developed a new nanodiamond paste by mixing with nanographite powders for screen-printing. The large area nanocrystalline diamond film was prepared on graphite substrates by screen-printing method. Using special three step sintering processing thermal treatment technique and the two steps post-treatment process we improved surface morphology of nanocrystalline diamond film. SEM image of the nanocrystalline diamond film is shown that thermal treatment technique and post-treatment process make nanocrystalline diamond emitters to expose from the nanocrystalline diamond film. The microstructure of nano-crystalline diamond with edges and corners were nature field-emitters. As cathode the field emission characteristics of the nanocrystalline diamond film was measured. The result shown that lower cost large area nanocrystalline diamond film possess field-emission uniformity and stability, can be used as electron source in military technique and other outdoor inclemency condition.