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The search for new classes of hole transporting materials (HTMs) is a very important task on the way towards commercialization of perovskite solar cells (PSCs). In this work, the synthesis and performance in PSCs of new enamine-based HTMs are presented. The synthesis scheme is very short, consisting of only one step, starting from commercially available aromatic amines. Moreover, the reaction does not require metal catalysts and is based on condensation chemistry with water as a by-product. It was shown that PSCs with such materials reach high power conversion efficiencies (PCE), with the highest PCE of 19% achieved for the V1021-based device. This work establishes enamines as a very promising class of materials for application in PSCs.
Mohammad Khaja Nazeeruddin, Kasparas Rakstys, Albertus Adrian Sutanto
Hong Zhang, Zhiwen Zhou, Miao Chen
Felix Thomas Eickemeyer, Ulf Anders Hagfeldt, Kazuteru Nonomura, Bowen Yang, Brian Irving Carlsen, Marco Alejandro Ruiz Preciado, Natalie Flores Diaz, Desiré Molina Alcaide