Design and implement the optimal structure to increase focus on solar power photovoltaic cells

Nowadays, advancement in technology provided favorable conditions for the use of solar energy as an important source of renewable energy. This paper proposed a novel refractive structure for increasing the performance of photovoltaic cells.
This structure which is named back-to-back-Fresnel lens is similar to conventional Fresnel lens used for energy concentration on PV cells while comprising some superior features.
In the novel structure, some important features are added to intensive system which are decrease in loss of energy and simple structure.
To show the accuracy of results, the proposed structure is experimentally tested with a PV cell and the obtained results confirm its superior features.