测试了用水热技术制备的硅纳米孔柱阵列(silicon nanoporous pillar array(简称Si-NPA))的场致发射性能。测试结果显示,Si-NPA的开启电场为约1.48V/um;在5V/um的外加电场下,其发射电流密度为28.6uA/cm^2;在外加电场4.4V/um时,其电流浮动率为13%。Si—NPA发射性能增强的原因是由于其独特的表面形貌和结构所致。
Field emission from silicon nanoporous pillar array (Si-NPA) is studied. The results show that the Si- NPA turn-on field is about 1.48V/um, the emission current density of 28.6uA/cm^2 is obtained to be 5V/um, and the current fluctuation ratio is 13% at 4.4V/um. The enhanced field emission from Si-NPA is attributed to unique surface morphology and structure of Si-NPA.