Mustafa Yaşa, Esra Bag Celik, Xiao-Xin Gao, Zeynep Gözükara Karabağ, Ummugulsum Gunes, Olga A Syzgantseva, Maria A Syzgantseva, Liping Zhong, Andreas Züttel, Paul J Dyson, Mohammad Khaja Nazeeruddin, Levent Toppare, Selcuk Yerci, Gorkem Gunbas
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Functionalized Phenyl Methanaminium Salts Provide Highly Stable Perovskite Solar Cells.
One of the leading approaches to enhancing the performance and stability of perovskite solar cells (PSCs) involves passivating the perovskite surface and grain boundaries with large ammonium salts. Here, we report the synthesis of furan-, thiophene-, and selenophene-functionalized phenyl methanaminium iodide salts (FPMAI, TPMAI, and SPMAI) and their application as passivating agents on 3D [(Cs0.04FA0.85MA0.11)Pb(I0.96Br0.01Cl0.03)3] perovskite. The TPMAI-passivated PSCs performed the best and achieved a power conversion efficiency (PCE) of 23.15% compared to the reference (without a passivating agent) at 20.91%. Efficiencies reduced to 98 and 54% of the initial value after 1250 h of continuous illumination for TPMAI-treated PSCs and the reference, respectively. DFT calculations revealed that TPMAI offers superior passivation, disfavoring iodine vacancy formation. Our findings highlight the potential of functionalized PMAI salts as passivation agents for improved efficiency and stability in PSCs.
期刊介绍：
ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.
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