Simulation of the Properties of Nano-Grooved Back Reflectors for Increasing the Efficiency of Solar Cells
Abstract
In recent years, both solar cell research and nanostructure research have become popular topics in design and fabrication of semiconductor devices. The need for higher solar cell efficiencies at lower cost has been the main concern of scientists and engineers. By improving synthetic control in nanoscience high-performance electronic devices are becoming possible. The reflectors that are high-conductivity metals used as back contact in solar cells. Nano-grooved back reflectors can increase the efficiency of solar cells by improving the light–matter interaction near the mirror surface. In this work, we simulate and investigate the electrical and optical properties of these reflectors and their effects on solar cell efficiency. For this purpose, the properties of the back reflector in different wavelengths are examined and output parameters of a GaAs cell with a back reflector optimized for visible wavelengths are considered to find the appropriate absorber thickness.
Keywords
Mirrors, Back reflectors, Nano-grooves, Gaas solar cell