Interfacial Coupling Design Enhancing Hole Transport in PTAA‑Based Perovskite Solar Cells with Efficiency over 26% (IMAGE)
Caption
- Two triphenylamine-based semiconducting ligands, namely N-TPEAI and P-TPEAI, were designed by extending the π-conjugation, with structural similarities to the backbone of poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (PTAA).
- This π-conjugation extension strategy proves to be effective in strengthening intermolecular interactions both between adjacent spacer cations within 2D perovskites and at perovskite/PTAA interfaces.
- The resultant 2D/3D perovskite solar cells (PSCs) employing P-TPEAI achieve an outstanding efficiency of 26.13%, which is the highest value reported for 2D/3D PSCs incorporating PTAA hole-transport layers.
Credit
Huaiman Cao, Xufan Zheng, Yue Qiang, Liangyu Zhao, Yulong Chen, Zhiguang Sun, Yingguo Yang*, Hin-Lap Yip*, Ze Yu*.
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