Computational analysis of a spiral thermoelectric nanoantenna for solar energy harvesting applications

Thermo-electrical nanoantennas have been proposed as an alternative option for conversion solar energy harvesting applications. In this work, the response of a spiral broadband antenna has been obtained from numerical and theoretical simulations perspectives. The results show that this device exhibits a responsivity of 20mV/W under 117W/cm
²
, for a single-frequency radiation. We discuss strategies for enhanced efficiency.