Efficient wide-bandgap perovskite solar cells enabled by doping a bromine-rich molecule
Rui He, Dewei Zhao et al.
nanoph-2020-0634 2021,
In this paper, the researchers work on wide bandgap perovskite and achieve an efficiency of 17.12% for their inverted TBB-doped PSC with an enhanced Voc of 1.19 V. The improvement is due to (1) better alignment of the conduction band with C60 and (2) larger grain sizes leading to reduced bulk recombination." The researchers used the characterization tool Paios. TPV (TPC) shows increased (decreased) lifetime (charge extraction time) for 0.3% TBB-doped perovskite solar cell confirming the TrPL lifetimes (UPS energy alignment) data also in the device. IS fitting was interpreted as higher recombination resistance.