Product Name
PTAA; Poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine],
Application
Poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (PTAA) serves as a crucial substrate material due to its role in transporting holes during the fabrication of devices such as perovskite solar cells, polymeric light-emitting diodes, and organic field-effect transistors. As a member of the poly(triaryl)amine family, PTAA is a semiconducting material valued for its electron-rich composition, which allows it to efficiently transport holes and block electrons. Its application significantly enhances the performance metrics of perovskite solar cells, including improvements in open-circuit voltage (VOC) and fill factor (FF), with notable results like a short-circuit current density (JSC) of 16.5 mA/cm², a VOC of 0.997 V, and an FF of 0.727. PTAA demonstrates exceptional proficiency as a hole-transporting layer (HTL), particularly when used in conjunction with MAPbBr3 to stabilize the perovskite phase of FAPbI3, thereby boosting the power conversion efficiency of solar cells beyond 18% under standard illumination conditions. This renders PTAA one of the most effective polymer HTLs for perovskite applications, with efficiencies reaching up to 20.2% as of 2015.