ABSTRACT A rectification concept based on field electron emission in a nanoantenna is proposed. The device consists of three parts, i.e., an aspherical micro-lens, a nanoantenna, and an electron collector electrode with proper geometry design to ensure rectified field electron emission. The incident radiation is enhanced in two steps, firstly by micro-lens focusing onto the nanoantenna, and secondly through excitation of the near field in the gap of the nanoantenna to reach a level required for field electron emission from a sharp metallic tip. Furthermore, we show that single nanoantenna cells can be arranged into an array using a bus-bar configuration where the currents of each cell are added up to increase the harvested power. The performance of the nanoantenna in a single cell and in the array is studied by full-wave simulations. Finally, the total efficiency of the proposed device is calculated to demonstrate its superiority over the MIM devices.

中文翻译：

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基于纳米天线中电子场发射的红外整流用于热能收集

摘要提出了一种基于纳米天线场电子发射的整流概念。该装置由三部分组成，即非球面微透镜、纳米天线和具有适当几何设计的电子收集电极，以确保整流场电子发射。入射辐射分两步增强，首先通过微透镜聚焦到纳米天线上，其次通过纳米天线间隙中的近场激发达到从尖锐金属尖端发射场电子所需的水平。此外，我们表明可以使用汇流条配置将单个纳米天线单元排列成阵列，其中每个单元的电流相加以增加收集的功率。通过全波模拟研究纳米天线在单个单元和阵列中的性能。最后，