Bettucci, O.; Pascual, J.; Turren-Cruz, S.-H.; Cabrera-Espinoza, A.; Matsuda, W.; Voelker, S.F.; Köbler, H.; Nierengarten, I.; Reginato, G.; Collavini, S.; Seki, S.; Nierengarten, J.-F.; Abate, A.; Luis Delgado, J.: Dendritic-Like Molecules Built on a Pillar[5]arene Core as Hole Transporting Materials for Perovskite Solar Cells. Chemistry - A European Journal 27 (2021), p. 8110-8117
10.1002/chem.202101110
Abstract:
Multi-branched molecules have recently demonstrated interesting behaviour as charge-transporting materials within the fields of perovskite solar cells (PSCs). For this reason, extended triarylamine dendrons have been grafted onto a pillar[5]arene core to generate dendrimer-like compounds, which have been used as hole-transporting materials (HTMs) for PSCs. The performances of the solar cells containing these novel compounds have been extensively investigated. Interestingly, a positive dendritic effect has been evidenced as the hole transporting properties are improved when going from the first to the second-generation compound. The stability of the devices based on the best performing pillar[5]arene material has been also evaluated in a high-throughput ageing setup for 500 h at high temperature. When compared to reference devices prepared from spiro-OMeTAD, the behaviour is similar. An analysis of the economic advantages arising from the use of the pillar[5] arene-based material revealed however that our pillar[5] arene-based material is cheaper than the reference.