Shrinkage study and optimization of multiplexed green holographic solar concentrators toward improved photovoltaic energy

Nowadays, the development of optical systems applied to the generation of clean and renewable energy is one of the great challenges of the 21st century. This work presents a theoretical and experimental study of shrinkage in multiplexed holographic lenses (MHL) stored in a low-toxicity photopolymer named Biophotopol. For this purpose, a study has been carried out using k-space tools. In addition, a study has been performed to optimize the number of MHLs, the hologram thickness, and the angular distance between peaks. To evaluate the efficiency, the short-circuit current has been evaluated under solar illumination with different incident reconstruction angles.