2.3.1 High Efficiency Hybrid and Inorganic Perovskite Solar Cells
Improve CsPbIXBr3-X film quality with minimum defects with carrier lifetimes towards 10µs, enabling thick absorbers for high optical absorption without jeopardizing voltage output.
Develop best transport layer and interlayer designs producing positive band-offsets for carrier transports and reduced surface recombination velocities (towards 103 cm/s) thereby improving fill factors and output voltages.
Aim to improve cell performance reaching 80% of their theoretical limits. This translates to 21.7%, 19.0% and 16.6%, respectively for CsPbI3 (1.72eV), CsPbI2Br (1.90eV), and CsPbIBr2 (2.05eV) under ACAP-2.
Target long term outcomes of single junction perovskite cells with ERE approaching 100%. For cells with bandgaps close to the ideal, i.e., <1.6eV, the power conversion efficiency is expected to reach or exceed 27%.