Exploring Structure-Property Relationships of Phenothiazine-based Hole As Materials for Optoelctronics and large band perovskite solar cells

This study focuses on the synthesis and characterization of three novel phenothiazine-based hole transporting materials (HTMs) with wide band gaps, specifically designed for large bandgap MAPbBr3 perovskite solar cells. The plan to investigate the relationship between device performance and the structural variations in the donor peripheral group. The presence of methoxy groups on the twisted donor unit in HTM 2k is predicted to enhance the power conversion efficiency (PEC), while the absence of methoxy groups in the twisted donor of 2c demonstrates higher open circuit voltage (Voc). Conversely, introducing a planar peripheral donor by incorporating a new chemical between the two phenyl units results in decreased PCE and Voc.