一维W纳米材料的场发射性能及其可控制备的研究进展

一维W纳米材料是一种新型的场发射材料,具有优异的场发射性能。介绍场致电子发射的基本原理及性能评价标准;讨论一维W纳米材料的6种制备方法:气相沉积法、电子束诱导法、蚀刻法、溅射法、自组装法和模板法;分析不同制备方法对场发射性能的影响;指出电场增强因子是决定一维W纳米材料场发射性能优劣的首要因素,设计制造出结构可靠、场发射性能优异、成品率高以及寿命长的一维W纳米材料器件是未来的研究重点。

Research progress in field emission properties and controllable preparation of one-dimensional W nano-materials

The one-dimensional W nano-material is a new type of field emission materials with excellent field emission properties.The basic principles and performance evaluation criteria of field emission were introduced.Six synthetic methods of the one-dimensional W nano-materials were discussed,namely vapor deposition method,electron beam induced deposition method,etching method,sputtering method,self-catalytic method and template method.The impact factors on the field emission properties of different preparation methods were analyzed.It is pointed out that the electric field enhancement factor is the primary impact factor on the field emission properties of the one-dimensional W nano-materials,and design and manufacture of one-dimensional W nano-materials devices with reliable structure,excellent field emission performance,high yield and long life will be the focus of the future research.