Scientists have achieved high efficiency in silicon solar cells with the help of precision-controlled surfaces. New constructions of anti-reflective coatings for silicon solar cells, based on single-layered silica surfing, lead to a suppression of broadband reflection in the wavelength range of 500 to 1200 Nm for incidence angle of up to 60 °.
Researchers have emphasized that conventional dielectric anti-reflex coatings with just a few layers can significantly increase the transmission of sunlight, but only in a narrow wavelength range.
Anti -reflective coatings can increase the photogenized electricity
The latest examinations took place because almost half of the solar energy that reaches silicon solar cell is lost due to the reflection on the silicon air. While anti -reflective coatings suppress reflection and increase the photogenized electricity.
The study by Spie-the International Society for Optics and Photonics shows a new type of anti-reflective coating using a single, ultra-thin layer of polycrystalline silicon nanostructures (AKA, a metastrophabar).
According to reports, the Metasurface was developed by the combination of forward and inverse design techniques that have been improved by artificial intelligence (AI).
The study published in Advanced Photonics Nexus shows that reflection on the visible and close infrared spectra is at the record level of approx. 2% or 4.4% for normal and weird incidence.
“The results obtained show the potential of machine learning that reinforces photonic nanostructures in order to exceed classic anti -reflex coatings,” said researcher.
Coating effective, even if the sunlight hits steep angles
They showed that the coating on the visible and almost infrared spectrum (500 to 1200 nanometers) works and is also effective when the sunlight hits steep angles. It only reflects 2 percent of the incoming light in direct angles and about 4.4 percent in sloping angles against the non-paid results for a single-layer design.
This breakthrough shows that an intelligently designed nanostructure layer can increase the efficiency of mainstream sun collectors. Since it is both powerful and relatively simple, it could lead to more efficient solar modules, which may accelerate the transition to clean the energy after a press release.
The approach improves the design of Metasurfaces
The researchers also emphasized that the approach beyond solar energy, as scientists design metasurfaces for optics and photonics. It opens the door to multifunctional photonic coatings that could not only benefit solar energy, but also sensors and other optical devices.
They underlined that the proposed metastace reinforced solutions show high functionality with regard to reflection reduction with arches on glass and other substrates with low index.
The study shows that the forward design can achieve very promising results
“We have managed to obtain both forward-designed cross-circuit and free inverse structures designed with the best reported anti-reflection properties for single-layer structures,” said researcher from the study.