Fabrication and properties of nitride field emitter.

氮化物场发射体的制备和性能。

基本信息

批准号：
06555086
负责人：
ADACHI Hiroshi
金额：
$ 1.34万
依托单位：
Muroran Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research (B)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06555086/
关键词：
Transition metal nitrides Fabrication of fine needle Field emission properties Stability of field emission current 遷移金属窒化物微小針の製作還移金属窒化物

项目摘要

Field emitters of NbN,Nb_2N,TiN,and ZrN were fabricated by nitriding elemental metal needles. The nitriding was carried out by heating metal needles in an ammonia gas.Before operating the field emitters, they are flash heated for several seconds. Their field emission properties changed with the increase of the flashing temperature. At the beginning the current fluctuation was fundamentally step-and spike-like. However, it changed to random-like when flashed higher than a certain temperature where field emission patterns changed.The NbN emitters, which had been flash heated at 900ﾟC,showed the most stable field emission current among the nitride emitters examined here.It is revealed by using of AES (Auger Electron Spectroscopy) that the field emission properties are largely affected by the concentric components at the emitter surface. Deficiency of nitrogen degrades the emission properties very much and occurred due to a flash heating higher than a temperature where the change of the emission pattern was observed.It is concluded that the nitride emitters gave stable emission when flash heated at a relatively low temperature, suggesting that the deficiency of nitrogen at the emitter surface does the important role in the stable operation.

NBN，NB_2N，TIN和ZRN的现场发射器是用硝化元素金属针制成的。硝化物是通过在氨气中加热金属针进行的。在操作田间发射器之前，它们会闪烁几秒钟。随着闪烁温度的升高，它们的场发射属性发生了变化。一开始，目前的波动从根本上讲是类似尖峰的。 However, it changed to random-like when flashed higher than a certain temperature where field emission patterns changed.The NbN emitters, which had been flash heated at 900ﾟC,showed the most stable field emission current among the nitride emitters examined here.It is revealed by using of AES (Auger Electron Spectroscopy) that the field emission properties are largely affected by the concentrate components at the emitter surface.氮的缺乏降低了发射特性，并且由于观察到发射模式变化的温度高的闪光加热而发生。它得出的结论是，当硝酸盐发射器在相对较低的温度下闪烁时会产生稳定的发射，这表明在发射机表面的氮缺乏在稳定的运行中具有重要的作用。