Soft skin-like optoelectronic devices, extremely tiny nano-robots... These seemingly dreamy technologies will become reality due to the world's first 'metal-free perovskite-type ferroelectric' material.
On July 13th, the Xiongrengen team of Southeast University, You Yumeng Group once again made important research progress in the field of 'Molecular Ferroelectric Materials'. They first discovered metal-free perovskite-type ferroelectrics, which is an important material family of perovskites. New members have been added, and relevant research results were published online in the journal Science on the 13th.
There are two main types of common perovskite materials, inorganic perovskites and organic-inorganic hybrid perovskites. These materials are needed from advanced equipment such as lighters to space shuttles. But both types of perovskite materials are available. With metal elements, it increases the difficulty of processing and preparation. Even some metal elements (such as lead) can cause serious environmental problems.
For many years, people have been looking for the third category of the perovskite family - all-organic perovskite materials, namely metal-free perovskites. The molecular iron and steel team of Southeast University has used many years of research to replace inorganic ions with charged molecular groups. , successfully produced a large class of 23 kinds of all-organic new perovskite materials.
Because there is no metal element, the metal-free perovskite material will have the characteristics of flexibility, easy processing, low energy consumption and low pollution, and its inherent organic composition can bring wider application prospects to the material.
It is worth mentioning that the team also synthesized the left-hand enantiomers, right-hand enantiomers and racemic compounds of the four materials, and proved their ferroelectricity. Currently, left-handed, right-handed and achiral. The examples of compounds with ferroelectricity have not been reported yet. Such materials will also gain wider application prospects in the fields of data storage, optical quantum communication and so on.
