For ex., in a solar cell with Cs-doped MAPbI3 as absorber, increase in device efficiency is largely due to 14% and 18% improvements in short-circuit current density and open-circuit voltage, respectively, compared to those of the device with MAPbI3.
To optimize optical and electrical properties of MAPbI3 perovskite (well-known as a light absorber with a low bandgap of 1.5eV and high extinction coef.) while maintaining the fundamental characteristics of this material, one can replace a fraction of MA ions with alkali metal cations, like Cs, for ex. Could 2 n/p doped Cs-MAPbI3 heterojunction be juxtaposed?
The performance of functioning inverted structures can be improved by enhancing the morphology of perovskite films and developing new device architectures. Then, which conditions should be respected to get better device performances?