Simulation Study of a Meta Structured Solar cell

In this proposed work, a 3d –structured Metamaterial structured solar cell with GaAs as a top layer is designed and simulated. In this study, HFSS software is used to design the device and used to find the absorption curve then the designed device is imported to Sentaurus TCAD device editor and Sentaurus workbench is used to simulate the device. We use GaAs as a top layer because it had a bandgap which is approximately equal to solar ray bandgap. The bandgap of GaAs is 1.42eV. All the device structure is simulated and the output is tabulated. The proposed device has four layers. The top layer is a meta material structure which is made up of gold, the second layer is GaAs, third layer is Silicon Nitride and the bottom layer is silicon. The device has a two contact which is made up of silver. The solar cell we designed has a length of 600nm and a width of 500nm and a thickness of 100nm. The proposed device is simulated successfully and optimized, which has an efficiency of 18.15%, V
oc
of 0.18V and J
sc
of 0.31 mA/cm
²
.4