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Fullerene‐Based Materials as Hole‐Transporting/Electron‐Blocking Layers: Applications in Perovskite Solar Cells

2018; Wiley; Volume: 24; Issue: 34 Linguagem: Inglês

10.1002/chem.201801069

1521-3765

Sebastian F. Völker, Marta Vallés‐Pelarda, Jorge Pascual, Silvia Collavini, Fernando Ruipérez, Elisabetta Zuccatti, Luis E. Hueso, Ramón Tena‐Zaera, Iván Mora‐Seró, Juan Luis Delgado,

Organic Electronics and Photovoltaics

Abstract Here we report for the first time an efficient fullerene‐based compound, FU7 , able to act as hole‐transporting material (HTM) and electron blocking contact. It has been applied on perovskite solar cells (PSCs), obtaining 0.81 times the efficiency of PSCs with the standard HTM, spiro‐OMeTAD, with the additional advantage that this performance is reached without any additive introduced in the HTM layer. Moreover, as a proof of concept, we have described for the first time efficient PSCs in which both selective contacts are fullerene derivatives, to obtain unprecedented “fullerene sandwich” PSCs.