Researchers establish self-healing perovskite solar cell

• A team led by Prof. Hu Linhua at the Hefei Institutes of Physical Science of the Chinese Academy of Sciences (CAS) has lately established a type of self-healing perovskite solar cell by functional combination of polyvinylpyrrolidone (PVP). Related outcomes were released in the Journal of Energy Chemistry.

These solar cells have shown impressive humidity stability as well as self-healing behavior after 500 hours of procedure, according to the scientists.

Organic-inorganic hybrid perovskite solar cells are thought about to be a competitive choice to conventional silicon solar cells. Nonetheless, they are prone to weakening when revealed to air. Researchers have been functioning to make them stable and also much better self-healing to stand up to severe operating environments.

Air moisture is the essential issue for perovskites. It gets into the films as well as speeds up the damage of tools. As a result, the scientists introduced PVP to the methylammonium lead iodide perovskite forerunner. It can regulate crystal growth as well as enhance the tools with self-healing capacity in a moisture environment.

PVP is a polymer with numerous carbonyl teams. When it was introduced in perovskite solar cells, it served as a "safety armor with an automatic blood backflow effect" against water vapor.

On top of that, PVP can enhance crystal development with less defects and bigger grains.