Passivation is an effective method to reduce defects and inhibit non-radiative recombination. Organic amine salts such as phenethylamine iodide (PEAI) have been successfully used to passivate the perovskite surface, achieving world-record efficiency of the device for the improved VOC.
Click here for original story, Efficient perovskite solar cells developed by reducing interface-mediated recombination
Source: Phys.org