Life cycle of a tungsten cold field emitter
Life cycle of a tungsten cold field emitter
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钨冷场发射体的生命周期
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
J. Thong
中科院分区：
文献类型：
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作者：
K. Yeong;J. Thong
本文研究了钨冷场发射体的全寿命周期。场发射性能和相应的钨发射体的演变在其整个生命周期分为三个不同的区域进行了讨论。结果表明，吸附质动力学对场发射电流的稳定性有显著影响，而吸附质诱导的场发射电流不稳定性在生命周期的不同区域表现出不同的行为。发现在寿命结束时的发射器故障是由于在发射器表面上的吸附物相关的纳米突起积聚，这是不同于文献中先前报道的模型的故障机制。这种纳米突起的建立过程，以及它如何引发电弧和破坏钨尖的报道和讨论。本文研究了钨冷场发射器的整个生命周期。场发射性能和相应的钨发射体的演变在其整个生命周期分为三个不同的区域进行了讨论。结果表明，吸附质动力学对场发射电流的稳定性有显著影响，而吸附质诱导的场发射电流不稳定性在生命周期的不同区域表现出不同的行为。发现在寿命结束时的发射器故障是由于在发射器表面上的吸附物相关的纳米突起积聚，这是不同于文献中先前报道的模型的故障机制。该nanoprosthesis的建立过程，以及它如何启动电弧和破坏钨尖的报告和讨论。
This paper studies a tungsten cold field emitter throughout its life cycle. The field emission properties and corresponding tungsten emitter evolution throughout its life cycle fall into three distinct regions which are discussed. It was found that adsorbate dynamics affect field emission current stability significantly, while adsorbate induced current instability showed different behaviors in different regions of the life cycle. It was found that emitter failure at the end of the lifetime was due to adsorbate related nanoprotrusion buildup on the emitter surface, a failure mechanism that is different from models previously reported in the literature. The buildup process of this nanoprotrusion and how it initiates arcing and destroys the tungsten tip are reported and discussed.This paper studies a tungsten cold field emitter throughout its life cycle. The field emission properties and corresponding tungsten emitter evolution throughout its life cycle fall into three distinct regions which are discussed. It was found that adsorbate dynamics affect field emission current stability significantly, while adsorbate induced current instability showed different behaviors in different regions of the life cycle. It was found that emitter failure at the end of the lifetime was due to adsorbate related nanoprotrusion buildup on the emitter surface, a failure mechanism that is different from models previously reported in the literature. The buildup process of this nanoprotrusion and how it initiates arcing and destroys the tungsten tip are reported and discussed.