Surface passivation with 2D perovskites has been one of the powerful strategies implemented in recent years, to achieve improved efficiency and to address the major issue towards commercialization of perovskite solar cells, stability, in perovskite solar cells (PSCs). In this comprehensive study, where such studies are very rare in the literature, 3D/2D PSCs were fabricated by utilizing 9 systematically diverse large ammonium cations for the formation of the 2D-layer. This systematic study revealed a clear structure-activity relationship, and cell with over 23% efficiency and significantly improved stability were achieved.
The syntheses of the large ammonium cations were achieved through a straightforward method and with minor modifications has the potential to be produced in large scale toward commercialization of 2D modified perovskite solar cells.
This comprehensive and systematic research study, led by Emerging PV Division of ODTÜ-GÜNAM (Zeynep Gözükara Karabağ, Dr. Aliekber Karabağ, Dr. Ümmügülsüm Güneş, Dr. Figen Varlıoglu Yaylalı, Assoc. Prof. Selcuk Yerci, and Assoc. Prof. Gorkem Gunbas) funded by TÜBİTAK with a 1004 Project (coded as 20AG002) is valued to be published in Advanced Energy Materials, a prime source for the best energy-related research to provide solutions to today’s global energy challenges.
Special thanks to Dr. Xiao-Xin Gao, Olga Syzgantseva, Maria A. Syzgenteva, Naoyuki Shibayama, Hiroyuki Kanda, Alwani Imanah Rafieh, Roland C. Turnell-Ritson, and Prof. Paul Dyson for their valuable contributions.
The article is open-accessed by the following link: https://doi.org/10.1002/aenm.202302038
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