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

这一小型企业创新研究(SBIR)第一阶段项目将建立定向纳米管覆盖的纳米晶体钻石保形涂层的电子发射行为。碳纳米管和纳米金刚石由于其良好的电子和结构性能，最近引起了人们的关注。由于纳米管的排列结构和电学性质，以及金刚石宽禁带的负电子亲和力，金刚石包覆的排列纳米管有望成为高效电子源的理想材料。提出了制备不同生长密度的定向纳米管，开发和包覆纳米晶金刚石的共形涂层，并对这些新型材料的电子发射行为进行了表征。这些结果将与现有的和发展中的排放者进行比较。提出的方法如果成功，可以在经济上应用于生产大尺寸平板显示器。平板显示器在当今社会变得越来越重要。随着笔记本电脑、汽车导航系统、蜂窝电话、寻呼机等应用对便携性的需求，平板显示器的市场正在迅速增长。迫切需要一种低成本、可扩展的高效滴头技术。在定向纳米管上涂覆金刚石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.