Hybrid 2D Pb(CH3NH2)I2n Coordination Polymer Precursor for Scalable Perovskite Deposition

Febriansyah, B., Koh, T.M., Rana, P.J.S. , Hooper, T.J.N., Ang, Z.Z., Li, Y., Bruno, A., Grätzel, M., England, Jason, Mhaisalkar, S.G. and Mathews, N. (2020) Hybrid 2D Pb(CH3NH2)I2n Coordination Polymer Precursor for Scalable Perovskite Deposition. ACS Energy Letters, 5 (7). pp. 2305-2312. ISSN 2380-8195

Full content URL: https://doi.org/10.1021/acsenergylett.0c00781

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Item Type:Article
Item Status:Live Archive


A two-dimensional hybrid coordination polymer Pb(CH3NH2)I2n featuring a well-defined layered structure is reported for scalable perovskite ink and deposition. This coordination polymer exhibits structural, spectroscopic, and physicochemical properties distinct from common PbI2 perovskite precursors. Notably, it serves as a methylamine "gas carrier"capable of liberating methylamine (CH3NH2) into the precursor solution, thus improving the solubility of perovskite in unconventional, greener processing solvents, such as acetonitrile. The purity of Pb(CH3NH2)I2n single crystals and the ability of the precursor to reduce sources of defects such as polyiodide species in solution allow the formation of high-quality perovskite films. This eventually results in efficient and stable devices, fabricated via a single-step antisolvent-free deposition method, transferable to large-area slot die coating. Gram scale synthesis of this unique lead precursor is demonstrated, essential for the scale-up of perovskite photovoltaic technology. Copyright © 2020 American Chemical Society.

Keywords:Deposition, Layered semiconductors, Lead compounds, Organic solvents, Physicochemical properties, Polymers, Coordination Polymers, Deposition methods, Gram-scale synthesis, Hybrid coordination polymers, Layered Structures, Photovoltaic technology, Polymer precursors, Precursor solutions, Perovskite
Subjects:F Physical Sciences > F200 Materials Science
F Physical Sciences > F120 Inorganic Chemistry
Divisions:College of Science > School of Chemistry
ID Code:51891
Deposited On:04 Oct 2022 09:10

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