Scientists in Germany demonstrated a slot die coating process for large-scale production of perovskite thin-film solar cells that achieved a maximum efficiency of 20.83%. Using an additive, and experimenting to find the optimal concentration, the group demonstrated improved control over the crystallization process – crucial for developing stable, repeatable processing.
A group of scientists at Switzerland’s Federal Laboratories for Materials Science and Technology (EMPA) has demonstrated a new manufacturing process, based on slot die coating, for the production of perovskite thin-film solar cells. The laboratory has fabricated small perovskite modules using this process and has plans to move into the field-testing phase later this year.
France’s Liten organization said it raised efficiency more than 20% with improved thickness homogeneity of the perovskite and optimized composition of the n-type interfacial layer. The previous record of 16.9% was attained by the same research group early last year.