Scientists from Germany have presented a new method for producing perovskite solar cells. In the future, they may replace crystalline silicon panels.
The researchers have improved the process of vertically applying a perovskite solution to a moving substrate. They found that this improves the characteristics of the materials, and the properties of the solution make the batteries better in aging and storage.
The scientists explained that crystalline silicon solar cells still make up the majority of solar farms and rooftop batteries. However, there are other technologies that convert sunlight into electrical energy through the use of extremely thin layers of material. Perovskite solar cells belong to this group, and now their efficiency approaches the cells that are made of crystalline silicon.
The researchers experimented with a perovskite coating. In this process, they made a thin slurry of perovskite precursor, solvent, and additive. All of this falls onto a glass substrate that will later become a solar cell. After that, scientists are waiting for the crystallization process, it forms an ultrathin layer of semiconductor perovskite structure.
This method is designed for making small test cells. However, scientists note that they cannot yet expand their experiments to industrial production. The next step for researchers is to develop scalable methods.