Tailoring perovskite crystallization and interfacial passivation in efficient, fully textured perovskite silicon tandem solar cells

Abstract: Fully textured perovskite silicon tandem solar cells are promising for future low-cost photovoltaic deployment. However, the fill factor and open-circuit voltage of these devices are currently limited by the high density of defects at grain boundaries and at interfaces with charge transport layers. To address this, we devise a strategy to simultaneously enhance perovskite crystallization and passivate the perovskite/C60 interface. By incorporating urea (CO(NH2)2) as an additive in the solution step of the hybrid evaporation/spin-coating perovskite deposition method, the crystallization kinetics are accelerated, leading to the formation of the desired photoactive phase at room temperature. With that, perovskite films with large grain sizes (>1 μm) and improved optoelectronic quality are formed at low annealing temperatures (100°C). Concurrently, remnant urea molecules are expelled at the perovskite surface, which locally displaces the C60 layer, thus reducing interfacial non-radiative recombination losses. With this strategy, the resulting tandem solar cells achieve 30.0% power conversion efficiency

Object Details

• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch
• Notes: Joule. - 8, 10 (2024) , 2811-2833, ISSN: 2542-4351

Classification and Topics

• Classification: Elektrotechnik, Elektronik

Contributors, Places and Time

• Event: Veröffentlichung
• (where): Freiburg
• (who): Universität
• (when): 2025
• Creator: Er-Raji, Oussama ; Mahmoud, Mohamed A. A. ; Fischer, Oliver ; Ramadan, Alexandra J. ; Bogachuk, Dmitry ; Reinholdt, Alexander ; Schmitt, Angelika ; Kore, Bhushan P. ; Gries, Thomas William ; Musiienko, Artem ; Schultz-Wittmann, Oliver ; Bivour, Martin ; Hermle, Martin ; Schubert, Martin ; Borchert, Juliane ; Glunz, Stefan ; Schulze, Patricia S. C.

Further information

• DOI: 10.1016/j.joule.2024.06.018
• URN: urn:nbn:de:bsz:25-freidok-2614073
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Last update: 15.08.2025, 7:21 AM CEST