The research in hybrid perovskite solar cells was increasing massively in the last couple of years, resulting in a tremendous increase in the efficiency of such solar devices. Although this technology is coming closer towards commercialization, several problems have to be overcome: The state-of-the-art perovskites are lead based, making them harmful for the environment, as well as instable towards environmental influences like water or light irradiation. Another factor is the high cost of the materials, especially the hole transporting materials.
My research focuses on two main subjects, namely the development of lead-free double perovskites, as well as the design and synthesis of low cost hole transporting materials via simple condensation chemistry.
Maximilian T. Sirtl*, Firouzeh Ebadi, Bas T. van Gorkom, Patrick Ganswindt, René A. J. Janssen, Thomas Bein, Wolfgang Tress, The Bottlenecks of Cs2AgBiBr6 Solar Cells: How Contacts and Slow Transients Limit the Performance Adv. Opt. Mater 2021 [link]
Maximilian T. Sirtl*, Melina Armer*, Lennart K. Reb, Rik Hooijer, Patrick Dörflinger, Manuel A. Scheel, Kristofer Tvingstedt, Nadja Glück, Pallavi Pandit, Stephan V. Roth, Peter Müller-Buschbaum, Vladimir Dyakonov, Thomas Bein, Optoelectronic Properties of Cs2AgBiBr6 Thin Films: The Influence of Precursor Stoichiometry ACS Appl. Energy Mater. 2020 [link]
Michiel L. Petrus,* Kelly Schutt, Maximilian T. Sirtl, Eline M. Hutter, Anna C. Closs, James M. Ball, Johan C. Bijleveld, Annamaria Petrozza, Thomas Bein, Theo J. Dingemans, Tom J. Savenije, Henry Snaith, and Pablo Docampo*, New Generation Hole Transporting Materials for Perovskite Solar Cells: Amide-Based Small-Molecules with Nonconjugated Backbones, Adv. Energy Mater., 2018. [link]
Michiel L. Petrus,* Maximilian Sirtl,* Anna C. Closs, Thomas Bein and Pablo Docampo, Hydrazone-based hole transporting material prepared via condensation chemistry as alternative for cross-coupling chemistry for perovskite solar cells, Mol. Syst. Des. Eng., 2018. [link]
Michiel L. Petrus, Arif Music, Anna C. Closs, Johan C Bijleveld, Maximilian Sirtl, Yinghong Hu, Theo J Dingemans, Thomas Bein, Pablo Docampo, Design Rules for the Preparation of Low-Cost Hole Transporting Materials for Perovskite Solar Cells with Moisture Barrier Properties, J. Mater. Chem. A, 2017. [link]