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Investigation of Euler spiral nanoantenna and its application in absorption enhancement of thin film solar cell

机译：欧拉螺旋纳米天线的研究及其在薄膜太阳能电池吸收增强中的应用

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摘要

A theoretical study on nanoantenna and its application in enhancing the performance of the thin film solar cell (TFSC) is presented. In this work, a novel design of nanoantenna i.e. Euler spiral nanoantenna (ESNA) is introduced, which has evolved after bending the conventional dipole nanoantenna in the manner of Euler spiral. The bending is performed up to an optimum length so that the antenna can equally respond to the two orthogonally polarized waves. Then the proposed nanoantenna in turnstile manner is examined for the intended application of enhancing the absorption in TFSCs. The antenna is placed on the absorber layer (Si amorphous) of the TFSC with a coating of Zinc Oxide. The simulation results show that the proposed ESNA can significantly increase the absorption in the absorber layer of the TFSC. The performance in terms of absorption and quantum efficiency of the solar cell incorporated with ESNA has been studied. ESNA confines the electric field in a larger area which results in absorption increase. The simulation results show that proposed ESNA can enhance the absorption up to 97.6% in the absorber layer and the photocurrent is enhanced by a factor of 1.39. To the best of our knowledge, this is the first study on Euler spiral nanoantenna and so as in its application with solar cells.
机译：本文对纳米天线及其在提高薄膜太阳能电池（TFSC）性能中的应用进行了理论研究。在这项工作中，介绍了一种新颖的纳米天线设计，即欧拉螺旋纳米天线（ESNA），该设计是在以欧拉螺旋方式弯曲常规偶极纳米天线之后演变而来的。弯曲操作达到最佳长度，这样天线就可以平等地响应两个正交极化波。然后，以旋转门方式对提出的纳米天线进行检查，以用于增强TFSC中吸收的预期应用。天线放在带有氧化锌涂层的TFSC的吸收层（非晶硅）上。仿真结果表明，所提出的ESNA可以显着提高TFSC吸收层的吸收。已经研究了结合有ESNA的太阳能电池在吸收和量子效率方面的性能。 ESNA将电场限制在更大的区域内，从而导致吸收增加。仿真结果表明，所提出的ESNA可以将吸收层吸收率提高到97.6％，光电流提高1.39倍。据我们所知，这是对Euler螺旋纳米天线及其在太阳能电池中的应用的首次研究。

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