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 trihalid...

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Bibliographic Details
Published in:Angewandte Chemie 2016-05, Vol.128 (21), p.6378-6382
Main Authors: Molina-Ontoria, Agustín, Zimmermann, Iwan, Garcia-Benito, Inés, Gratia, Paul, Roldán-Carmona, Cristina, Aghazada, Sadig, Graetzel, Michael, Nazeeruddin, Mohammad Khaja, Martín, Nazario
Format: Article
Language:English
Subjects:
Benzotrithiophene
Chemistry
Crosslinking
Derivatives
Energy conversion efficiency
Lead
Perovskites
Perowskite
Photovoltaic cells
Solar cells
Solar power
Solarzellen
Sun
Transportation
Triarylamine
Wirkungsgrad
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Summary: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'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). Aussichtsreiche Kandidaten: Benzotrithiophene (BTT) mit unterschiedlichen Donor‐Einheiten werden als Lochtransportmaterialien für Perowskit‐Solarzellen eingeführt. Die Verwendung dieser neuen Derivate in Photovoltaikzellen ermöglicht Wirkungsgrade (PCE) bis 18.2 % und ebnet damit den Weg zu hoch effizienten und vielseitigen Materialien für die Lichtumwandlung.
ISSN:0044-8249
1521-3757
DOI:10.1002/ange.201511877