Fabrication and its device application of battery-driven diamond cold cathode utilizing negative electron affinity

提出了一种基于模具的获得金字塔形金刚石的技术，并利用尿素掺杂氮(N)的新技术，证实了极低阈值电子发射。为了了解发射机理，测量了发射电子的能量分布，发现发射电子的能级约为EF。讨论了注射金属触点对电子发射的依赖关系，提出了“空间电荷层间模型”。用“金属-绝缘体-真空型电子发射”模型提出了最可能的机理，与大部分实验结果一致，并对其进行了验证。关于硼(B)掺杂金刚石电子发射的研究报道较多，并有特邀论文发表在Trans上。ice j81-c-ii, 180-190, 1998。在本项目中，虽然在实际应用前需要解决的问题很少，但在4年的时间里，已经明确了极低阈值的n掺杂金刚石的电子发射机制，并总结了15篇研究论文。

Mold-based technique for obtaining pyramidal-shape diamond was proposed and with new nitrogen(N) doping technique using urea, extremely low-threshold electron emission has been confirmed. In order to understand the emission mechanism, energy distribution of the emitted electrons were measured and we found that the emitted electrons have the energy level of about EF. The dependence of the injection metal contacts on the electron emission were discussed, and the "space charge interlayer model" was proposed. The most probable mechanism has been proposed using "metal-insulator-vacuum-type electron emission" model which is consistent with most of the experimental results, and its confirmation has also demonstrated. There were numbers of reports concerning the electron emission from boron (B) -doped diamond, and invited paper has appeared in Trans. IEICE J81-C-II, 180-190, 1998. In this project, although there remains few problems which should be solved before the practical applications, the electron emission mechanism of N-doped diamond which exhibits extremely low-threshold, has been clarified in 4-year term and summarized in 15 research papers.