SBIR Phase I: Nanocrystalline Diamond Coated Aligned Nanotubes as Electron Emitter

这个小企业创新研究（SBIR）一期项目将建立纳米晶金刚石适形涂层的排列纳米管的电子发射行为。碳纳米管和纳米晶金刚石因其具有良好的电子和结构特性而受到人们的关注。由于纳米管的排列结构和电学性质以及金刚石宽带隙的负电子亲和性，金刚石涂层排列纳米管有望成为高效电子源的理想材料。提出了制备具有不同生长密度的排列纳米管，并在其表面涂覆纳米晶金刚石的适形涂层，并对这些新型材料的电子发射行为进行表征。这些结果将与现有的和发展中的排放者进行比较。如果该方法成功，则可以经济地应用于大型平板显示器的生产。平板显示器在当今社会中变得越来越重要。随着笔记本电脑、汽车导航系统、移动电话、寻呼机等应用对便携性的需求，平板显示器市场正在迅速增长。迫切需要一种低成本、可扩展的高效发射技术。涂有金刚石的排列纳米管可以实现所需的突破。

This Small Business Innovation Research (SBIR) Phase I project will establish the electron emission behavior of aligned nanotubes coated conformal coating of nanocrystalline diamond. Carbon nanotubes and nanocrystalline diamond has recently attracted attention due to their promising electronic and structure properties. Due to the aligned structure and electrical properties of nanotubes and the negative electron affinity of the wide band gap of diamond it is expected that diamond coated aligned nanotubes could be idealmaterials for highly efficient electron sources. It is proposed to produce aligned nanotubes with varied growth density, develop and coat with conformal coating of nanocrystalline diamond, and to characterize these novel materials for electron emission behavior. These results will be compared to existing and developmental emitters. The proposed approach if successful can be applied to produce large flat panel displayseconomically.Flat panel displays are becoming increasingly important in today's society. With the demand for portability in such applications as laptop computers, automobiles navigation system, cellular telephones, pagers, etc., the market for flat panel displays is growing rapidly. A low cost scaleable technology of efficient emitter urgently needed. Aligned nanotubes coated with diamond can the breakthrough needed.