The world’s first industrial method for the synthesis of highly stable perovskites has been developed by scientists of the Ural Federal University. the first President of Russia B. N. Yeltsin (Urfu), together with colleagues from India. According to the authors, this opens up the possibility of efficient application of these substances, recognized by the magazine “Science” breakthrough material, energy and electronics. The results were published in the journal Materials Science in Semiconductor Processing.
Perovskites — a class of minerals with pseudokoningii crystal structure. Starting in 2012, perovskites, according to scientists, are actively studied as an extremely promising material for a number of areas, particularly for solar energy.
Today, the efficiency of perovskite items is now around 25%, which is comparable with semiconductors, and their production technology is much simpler. In addition, they can be placed on any flexible basics — from paper to clothing.
However, the practical application of perovskites are still limited as existing manufacturing methods do not provide the necessary stability of the material. At room temperature perovskite films degrade within a few hours.
Developed by specialists of the Ural Federal University and Institute of science and technology Sathyabama (India) powder form of perovskites showed high stability sufficient for technical use. Material properties, according to scientists, has not changed during the year of observation.
"in fact, we are the first who found the way to large-scale production of perovskites. Increasing the stability of the substance is ensured by the high crystallinity and reduced grain boundaries. This opens up great possibilities for full-fledged use of such materials in the future", — said the study’s author, researcher at the Department of magnetism and magnetic nanomaterials Ural Federal University Razhesh Kumar Manavalan.
By chemical treatment high temperature antibacterially method, scientists were able to synthesize a series of powders of perovskites: MAPbI3, MAPbBr3, FAPbI3, FAPbBr3, CsPbI3 and CsPbBr3. As explained by the authors, this method of production is very simple and requires little time.
Also in the course of research the specialists of the Ural Federal University have studied the structural, optical, morphological properties of the obtained substances were first investigated temperature-dependent phase transition of perovskites.
In future research team plans to improve the technology for commercial implementation.