Benzotrithiophene-Based Hole-Transporting Materials for 18.2% Perovskite Solar Cells

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 today I s 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).


Publié dans:
Angewandte Chemie, International Edition, 55, 21, 6270-6274
Année
2016
Publisher:
Weinheim, Wiley-V C H Verlag Gmbh
Mots-clefs:
Laboratoires:




 Notice créée le 2016-07-16, modifiée le 2018-12-03


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