Jiaonan and Ke’s work entitled “Tailoring Molecular‐Scale Contact at Perovskite/Polymeric Hole Transporting Material Interface for Efficient Solar Cells” has been published in Advanced Materials. Congratulations!
Poly(triaryl amine) (PTAA) is a promising HTL for perovskite solar cells; however, the hydrophobicity of PTAA causes problematic interfacial contact with perovskite, limiting the device performance to less than 22%. In this work, we successfully constructed a uniform two-dimensional (2D) perovskite interlayer with conjugated ligands 4Te, between three-dimensional (3D) perovskites and PTAA. Perovskite/PTAA interfacial adhesion was significantly improved and a PCE of 23.7% was achieved. Unencapsulated devices exhibited both superior thermal and moisture stability. Read the story here.
Letian Dou Group 