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A Methodology of Field-Emission Modeling with Space-Charge Effects

Tsong-Hsiung Tsai, Hwa-Kung Tang and Yao-Joe Yang
Department of ME, National Taiwan University, TW

Keywords: space charge effect, field emission, BEM

Abstract:
In this paper, we present a methodology for modeling and simulating 3D field-emission devices (FED) with space-charge effect. This approach applies a boundary-element-method (BEM) electrostatics solver [1] and an adaptive explicit integrator. The space charge effect is modeled by a method similar to the particle-in-cell (PIC) method [2]. The results by this methodology are verified with the results by a commercial electromagnetic package MAGIC [3]. We also demonstrate that this methodology not only provides excellent accurate results, but also reduces the effort of creating 3D solid models of field emission tips.

NSTI Nanotech 2003 Conference Technical Program Abstract

 
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