Lookup NU author(s): Dr Pablo Docampo
This is the authors' accepted manuscript of an article that has been published in its final definitive form by Royal Society of Chemistry, 2018.
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Perovskite solar cells have shown an exceptionally fast increase in performance. So far, most high performing devices comprise expensive hole transport material (HTM) which are synthesized using tedious synthetic procedures, resulting in a high cost and thereby limit the potential use in large-scale applications. In a quest to find low-cost chemistry to link the building blocks, in this work we explore hydrazone-based small molecules. These materials can be synthesized in a simple condensation reaction, with water being the only side product leading to a low material cost of less than 10 $/g. When used as hole transporting layers in perovskite solar cells, highly reproducible performance was obtained, similar to state-of-the-art materials, with the main difference being a small open-circuit voltage loss due to increased interfacial recombination. Thus, we show that hydrazone-based materials have the potential to compete in performance with materials obtained via cross-coupling reactions at a fraction of their cost.
Author(s): Petrus M, Sirtl MT, Closs AC, Bein T, Docampo P
Publication type: Article
Publication status: Published
Journal: Molecular Systems Design & Engineering
Print publication date: 01/10/2018
Online publication date: 04/07/2018
Acceptance date: 03/07/2018
Date deposited: 04/09/2018
ISSN (electronic): 2058-9689
Publisher: Royal Society of Chemistry
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