Print Email Facebook Twitter A low cost azomethine-based hole transporting material for perovskite photovoltaics Title A low cost azomethine-based hole transporting material for perovskite photovoltaics Author Petrus, M.L. Bein, T. Dingemans, T.J. Docampo, P. Faculty Aerospace Engineering Department Aerospace Structures & Materials Date 2015-05-11 Abstract Most hole transporting materials (HTMs) prepared for perovskite solar cell applications are synthesized via cross-coupling reactions that require expensive transition metal catalysts, inert reaction conditions and extensive product purification; making large-scale production cost-prohibitive. Here, we describe the synthesis of a simple azomethine-based conjugated small-molecule (EDOT-OMeTPA) which is easily prepared in a cost effective Schiff base condensation reaction, with water being the only by-product. As the hole transporter in planar CH3NH3PbI3 perovskite solar cells, efficiencies exceeding 11% were reached. This result is comparable to state-of-the-art materials such as Spiro-OMeTAD on a like-to-like comparison, while cost estimations show that the material cost is about one order of magnitude lower for EDOT-OMeTPA, resulting in a negligible cost-per-peak-Watt contribution of 0.004 $ W?1. In addition, the high synthetic accessibility of EDOT-OMeTPA also reduces the toxic chemical waste and therefore greatly reduces its environmental impact. Our results pave the way towards low-cost, environmentally friendly and efficient HTMs. Subject Gold for GoldOpen Access To reference this document use: http://resolver.tudelft.nl/uuid:f1aa9f58-a0ed-4dd7-8771-a6c2f05794a3 DOI https://doi.org/10.1039/C5TA03046C Publisher RSC Publishing ISSN 2050-7496 Source J. Mater. Chem. A, 2015,3, 12159-12162 Part of collection Institutional Repository Document type journal article Rights (c) 2015 RSC Files PDF c5ta03046c.pdf 386.54 KB PDF Correction.pdf 136.07 KB Close viewer /islandora/object/uuid:f1aa9f58-a0ed-4dd7-8771-a6c2f05794a3/datastream/OBJ1/view