L R AS Published on Sunday 22 January 2023 - n° 431 - Categories:tandem cells, R&D
All-perovskite tandem solar cell achieves efficiency (27.1%)
NREL's wide bandgap all-perovskite tandem solar cell achieved remarkable efficiency (27.1%) and stability. The manufacturing process used
gas quenching (instead of using an antisolvent). From the critical temperature, parts of a material were rapidly cooled in order to strengthen and harden them. This process solved the problem of separating bromine and iodine, resulting in a perovskite film with improved structural and optoelectronic properties.
The new cell is based on another inverted perovskite solar cell made with a p-i-n structure. It was presented by the research group in September. This device, according to the scientists, was able to retain 87% of its initial efficiency after 2,400 hours of operation at 55°C.
PV Magazine of 18 January 2023
