An international team of researchers was able to increase the efficiency of solar panels by 125%. To do this, they modeled the ideal arrangement of structures within the devices.
In a new study, a team of scientists from the UK, Portugal and Brazil found that changing the position of the lattice pattern in solar cell designs can increase the current generated by crystalline silicon (c-Si) by 125%. This is the first time that minimal manipulation by researchers has resulted in a significant increase in device efficiency.
The researchers explained that instead of introducing new structural designs based on natural textures or computational algorithms, the researchers focused on theoretical calculations of what could optimize the scattering and diffraction pattern of sunlight.
Their modeling showed that the lattice lines, located in a simple periodic, quasi-random structure, optimize the operation of the “photonic region” of the solar battery: the region within the photonic structure, in which the main diffractive element is located in a one-dimensional order.
In an experiment, the team simulated the performance of the photonic region as a patterned checkerboard made from a crystalline silicon slab just 1 micrometer thick (several times thinner than a spider web of silk) and compared it to other types of solar cell designs, including a flat cell. vertical lattice lines, crossed lines, and others.
The results showed that a chessboard with an arbitrary arrangement of its repeating elements generates more current than any of the other elements. Battery efficiency is 125% higher than non-grid counterparts.