DESIGN AND OPTIMIZATION OF SHURIKEN SHAPED NANORECTENNA FOR INFRARED DETECTION AND HARVESTING

Abstract

In this project nanorectenna has been studied and optimized for energy harvesting. Nanorectenna is a device which consists of nanoantenna and a MIM diode, which recti es the Alternating current into Direct current. To begin with, the optoelectronic properties of the noble metals as gold and copper have been studied, which show that at Terahertz frequency metals have complex dielectric constants and behave as dielectric. Furthermore, Shuriken shaped plasmonic nanoantenna has been designed and optimized to test its near eld enhancement capabilities for implementation in infrared detection. Near eld resonant properties and far eld characteristics of a single Shuriken type as well as coupled Shuriken type nanoantenna have been numerically investigated. On account of simple geometry, the proposed structure is not supposed to pose any di culty during fabrication. In addition, here the use of nanoarray instead of single elements has been investigated. The aim is to increase the overall captured electric eld. To bene t from this enhancement, the recti er is realized between the overlapped antennas arms using an insulator. The thin lm of CuO has been used as metal/insulator/metal(MIM) diode which o ers low zero bias resistance, thus improving the impedance matching with the antenna. The result shows that performance of shuriken shaped nanoantenna is much better than bow tie nanoantenna in terms of electric eld enhancement and polarization.