What They Say
Scientists at the ITMO University in Russia have developed an approach based on perovskites that exploit the concept of metasurfaces (Developments in Metasurface Technology May Enable Ultra-Thin Lenses) to potentially create nanostructures that minimise the internal reflections in perovskite films. The pattern was created with nanometer precision using ion nanolithography.
“Perovskite films are successfully implemented in LED production. We want to use these films to create surfaces that could be potentially used in AR screens. They have to be transparent enough for users to be comfortable looking through them. At the same time, they have to radiate light to display the necessary information on the screen,”
explained Sergey Makarov, lead researcher at ITMO’s Faculty of Physics and Engineering to Phys.org
According to Kseniia Baryshnikova, the first author of the paper, the researchers were able to determine the geometric parameters under which perovskite nanoparticles can interact with light in a broad range of the solar spectrum.
“Thus, most of the energy follows the direction of light. The rest of it is absorbed by the perovskite and transformed into photoluminescence. As a result, we get a highly transparent anti-reflective metasurface with active properties. We are now planning to implement our solution into optoelectronic devices,”
concludes Baryshnikova.
What We Think
There is certainly a lot going on in the area of metasurfaces and perovskites at the moment. (BR)
