Scientists make step closer towards unconventional light sources from perovskites
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Loading... - Harold Thomas
- 02 Nov 2022
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Perovskites are materials that can revolutionize energy. The durable and easy-to-produce materials have a high solar light absorption coefficient and therefore are used to build new, more efficient photovoltaic cells. In recent years, the emission properties of these materials, so far underestimated, have been used.
A photonic system with electrically tuned topological features has been obtained by scientists from the University of Warsaw and the Military University of Technology, in collaboration with the Italian CNR Nanotec, the British University of Southampton and the University of Iceland. The researchers described the discovery in the paper published in the latest issue of Science Advances.
USE IN PHOTONICS AND MORE
PhD candidate Karolina Åempicka-Mirek from the Faculty of Physics at the University of Warsaw, the first author of the publication, said: “We noticed that two-dimensional perovskites are very stable at room temperature, have high exciton binding energy and high quantum efficiency.”
The researchers add that these special properties can be used in the construction of efficient and unconventional light sources. This means that perovskites can be used in photonic systems. It is planned to use perovskites for information processing with high energy efficiency.
The photonic structure developed by the scientists can be used in optical neuromorphic networks, where precise control over nonlinear properties of photons is necessary.
EXPERIMENTS POSSIBLE IN THE OPTICAL CAVITY
The scientists managed to create a system in which excitons in a two-dimensional perovskite were strongly coupled with photons trapped in a birefringent photonic structure: a two-dimensional optical cavity filled with a liquid crystal. The tested optical cavities were fabricated at the Military University of Technology. Read More…
