Researchers from Lomonosov Moscow State University in Russia explained how changing the ratio of components forming the light-absorbing layer of a perovskite solar cell influences the structure of created films and battery efficiency.
Perovskites can be used to create perovskite solar batteries, which are a relatively new area of R&D, but are showing promise in terms of efficiency and function. In their previous work, the researchers found out that filiform (wire-like) hybrids of perovskites have acquired their shape because of the structure of intermediate compounds, which are formed during the process of perovskite crystallization. The team has discovered a whole group of these compounds, every one of which is a crystalline solvate. The crystalline solvates are crystalline compounds with the molecules of the precursor components' solvent built into their structure. The dissolved components precipitate from the solution and form a crystalline film of perovskite.