首页> 外文会议>International Symposium on Quantum Confinement VI: Nanostructured Materials and Devices, Sep 5-6, 2001, San Francisco, CA >ANODE CURRENT DENSITY PROFILES IN PLANAR COLD CATHODES USING CURRENT CARRYING THIN FILMS TO ACHIEVE NEGATIVE ELECTRON AFFINITY
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ANODE CURRENT DENSITY PROFILES IN PLANAR COLD CATHODES USING CURRENT CARRYING THIN FILMS TO ACHIEVE NEGATIVE ELECTRON AFFINITY

机译:利用电流携带薄膜实现负电子亲和力,在阳极冷阴极上产生电流密度分布图

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摘要

In this paper, we revisit the effects of DC current crowding in planar cold cathodes making use of semimetallic thin films to achieve low or negative electron affinity. The effects of current crowding are shown to be strongly affected by the trapping of electrons being reflected towards the cathode as a result of space-charge effects in the vacuum gap between cathode and anode. This interplay between current crowding and space-charge effects can lead to a non-monotonic lateral distribution of the anode current density for some values of the geometrical parameters and biasing conditions of the cold cathode. We study this interplay for a specific Metal/CdS(Cadmium Sulfide)/LaS(Lanthanum Sulfide) cold cathode.
机译:在本文中,我们通过使用半金属薄膜来实现低或负电子亲和力,回顾了平面冷阴极中直流电流拥挤的影响。由于在阴极和阳极之间的真空间隙中存在空间电荷效应,电子的俘获被反射向阴极,这表明电流拥挤的影响受到强烈影响。对于一些几何参数值和冷阴极的偏置条件,电流拥挤和空间电荷效应之间的这种相互作用会导致阳极电流密度的非单调横向分布。我们研究了特定金属/ CdS(硫化镉)/ LaS(硫化镧)冷阴极之间的相互作用。

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