This article is cited in 4 papers

Surfaces, Electron and Ion Emission

Use of ion processing to improve the quality of fullerene-coated field emitters

T. A. Tumareva, G. G. Sominskii, I. A. Svetlov, I. S. Panteleev

Peter the Great St. Petersburg Polytechnic University

Abstract: The efficiency of tip field emitters covered by activated fullerene coatings is studied in a wide range of emission currents and residual gas pressures. Main mechanisms behind the influence of the gaseous medium and ion bombardment on the emitter efficiency are determined. The feasibility of improving the homogeneity of the fullerene coating by potassium ion bombardment is demonstrated. From data on the emitter performance in a technical vacuum, a previously unknown effect is discovered: the structure of activated fullerene coatings is reproduced under intense ion bombardment. It is found that intense bombardment by residual gas ions increases a limiting current extracted from fullerene-coated tip field emitters.

Received: 16.03.2011

 English version: Technical Physics, 2012, 57:1, 113–118

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