RT Journal Article T1 Benzotrithiophene-Based Hole-Transporting Materials for 18.2% Perovskite Solar Cells A1 Molina Ontoria, Agustín A1 Zimmermann, Iwan A1 García Benito, Inés A1 Gratia, Paul A1 Roldán Carmona, Cristina A1 Aghazada, Sadig A1 Graetzel, Michael A1 Khaja Nazeeruddin, Mohammad A1 Martín León, Nazario AB New star-shaped benzotrithiophene (BTT)-based hole-transporting materials (HTM) BTT-1, BTT-2 and BTT-3 have been obtained through a facile synthetic route by crosslinking triarylamine-based donor groups with a benzotrithiophene (BTT) core. The BTT HTMs were tested on solution-processed lead trihalide perovskite-based solar cells.Power conversion efficiencies in the range of 16% to 18.2% were achieved under AM 1.5 sun with the three derivatives. These values are comparable to those obtained with todays most commonly used HTM spiro-OMeTAD, which point them out as promising candidates to be used as readily available and cost-effective alternatives in perovskite solar cells (PSCs). PB Wiley SN 1521-3773 YR 2016 FD 2016-05-17 LK https://hdl.handle.net/20.500.14352/23157 UL https://hdl.handle.net/20.500.14352/23157 LA eng NO Unión Europea. FP7 NO Unión Europea. H2020 NO European Research Council NO Ministerio de Economía y Competitividad (MINECO) NO Comunidad de Madrid DS Docta Complutense RD 10 abr 2025