Modification of field emitter array tip shape by focused ion-beam irradiation

M. Takai, T. Kishimoto, Masatsugu Yamashita, H. Morimoto, S. Yura, A. Hosono, Satoshi Okuda, S. Lipp, L. Frey, H. Ryssel

Journal of Vacuum Science & Technology B Microelectronics and Nanometer Structures Processing Measurement and Phenomena · 1996 · 30 citations · 0 references

Concepts

Abstract

Tip shapes of Si field emitter arrays, fabricated by a conventional dry etching process, have been modified by focused ion-beam (FIB) irradiation to obtain a sharp cone shape. Flat-topped Si tips could be sharpened by localized sputtering using FIBs for a short time. Tip shape inspections and repairs were also performed using a FIB system combined with an electron-beam column to remove metal residues and melted emitters.