화학공학소재연구정보센터
Journal of Vacuum Science & Technology B, Vol.24, No.2, 932-935, 2006
Fabrication of gated cold cathode using standing thin film induced by ion-beam bombardment
We demonstrated high current field electron emission from a gated field electron emitter fabricated by the thin film standing technique which was induced by ion-beam bombardment and etch-back technique. The thin film material was tungsten disilicide. An emitter tip having a high aspect ratio was fabricated inside a gate aperture of 2 mu m in diameter. The emission current of 10 mu m was obtained from a single tip cathode at the gate voltage of 133.5 V. A multitip cathode composed of 1000 tips cathode showed a lower turn-on voltage (31 V) than that of the single tip (112 V), which indicated nonuniform distribution of the turn-on voltage. (c) 2006 American Vacuum Society.