Self-passivation hole-transporting materials with pyridine-containing cores for antimony chalcogenide solar cells studied under dopant-free conditions

Abstract

Pyridine-containing quinoline derivatives are developed as hole transporting materials for antimony chalcogenide solar cells. This work indicates for the first time that the pyridine heterocycle can passivate the defects of Sb₂(S,Se)₃ films and suppress charge recombination. The photovoltaic performance and stability are improved with the pyridine-containing hole transporting materials.