%0 Journal Article
%A Molina Ontoria, Agustín
%A Zimmermann, Iwan
%A García Benito, Inés
%A Gratia, Paul
%A Roldán Carmona, Cristina
%A Aghazada, Sadig
%A Graetzel, Michael
%A Khaja Nazeeruddin, Mohammad
%A Martín León, Nazario
%T Benzotrithiophene-Based Hole-Transporting Materials for 18.2% Perovskite Solar Cells
%D 2016
%@ 1521-3773
%U https://hdl.handle.net/20.500.14352/23157
%X 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).
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