Jing Wang

TL;DR: The studies reveal that the nitrile (C-N) groups on the small molecule effectively reduce the trap density of the perovskite film and thus significantly suppresses the non-radiative recombination in the derived PVSC by passivating the Pb-exposed surface, resulting in an improved open-circuit voltage from 1.10 V to 1.16”V after passivation.

TL;DR: The synthesis of a novel 3D small molecule named TPE-S and its application as an HTM in PVSCs are shown, which demonstrate a remarkable efficiency of 15.4% along with excellent stability, which is the one of the highest reported values for inverted all-inorganic PV SCs.

TL;DR: It is demonstrated that polymerizing SQs into pseudo two dimensional p-π conjugated polymers is a feasible solution to overcome this challenge and the resulting polysquaraine HTMs not only exhibit suitable energy levels and efficient passivation effects, but also achieve very high hole mobility.