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Hydrazone-based hole transporting material prepared via condensation chemistry as alternative for cross-coupling chemistry for perovskite solar cells

Lookup NU author(s): Dr Pablo Docampo

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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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Abstract

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.


Publication metadata

Author(s): Petrus M, Sirtl MT, Closs AC, Bein T, Docampo P

Publication type: Article

Publication status: Published

Journal: Molecular Systems Design & Engineering

Year: 2018

Volume: 3

Issue: 5

Pages: 734-740

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

URL: https://doi.org/10.1039/C8ME00023A

DOI: 10.1039/C8ME00023A


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