Zinc Porphyrin–Ethynylaniline Conjugates as Novel Hole-Transporting Materials for Perovskite Solar Cells with Power Conversion Efficiency of 16.6%

摘要: New zinc porphyrins Y2 and Y2A2 have been utilized in perovskite solar cells specifically as hole-transporting materials (HTMs) rather than photosensitizers. The combination of MAPbI3 photosensitizer HTMs is a potential alternative to well-known MAPbI3/Spiro-OMeTAD hybrids owing high performance versatility toward molecular engineering porphyrin families. A efficiency 16.60% achieved by n-butyl tethered HTM (VOC = 0.99 V; JSC 22.82 mA cm–2) which comparable that Spiro-OMeTAD 18.03% 1.06 22.79 mA cm–2). Both possess similar highest occupied orbital level the same order magnitude hole mobility at 10–4 cm2 V–1 s–1. slightly poorer 10.55% 1.01 17.80 mA cm–2) obtained for n-dodecyl HTM. This believed stem from more surface pinholes when deposited on leading an slower mobility.