论文标题
空间充电有限的电流来自纳米和微二极管的有限发射极
Space-Charge Limited Current from a Finite Emitter in Nano- and Microdiodes
论文作者
论文摘要
我们以微观，平面，真空二极管具有有限的发射极面积和间隙中有限数量的电子数字模拟经典电荷动力学。我们假设电子在空间充电有限条件下发射，并施加固定电势。使用分子动力学方法包括所有电子之间的库仑相互作用。我们将结果与常规的二维儿童langmuir进行了比较，并解释了如何在亚微米直径发射器上适用于该结果。最后，我们提供了一些简单的关系，以理解非常小的发射器的空间充电有限的流程。
We simulate numerically the classical charge dynamics in a microscopic, planar, vacuum diode with a finite emitter area and a finite number of electrons in the gap. We assume electrons are emitted under space-charge limited conditions with a fixed potential applied to the diode. The Coulomb interaction between all electrons is included using the method of molecular dynamics. We compare our results to the conventional two-dimensional Child-Langmuir and explain how it is limited in applicability for sub-micron diameter emitters. Finally, we offer some simple relations for understanding space-charge limited flow from very small emitters.
