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Molecules
Volume 25
Issue 8
10.3390/molecules25081856
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Open AccessCommunication

New Acidic Precursor and Acetone-Based Solvent for Fast Perovskite Processing via Proton-Exchange Reaction with Methylamine

by
Sergey A. Fateev
1,
Ekaterina I. Marchenko
1,
Andrey A. Petrov
1,
Eugene A. Goodilin
1,2 and
Alexey B. Tarasov
1,2,*
1
Laboratory of New Materials for Solar Energetics, Department of Materials Science, Lomonosov Moscow State University, 1 Lenin Hills, 119991 Moscow, Russia
2
Department of Chemistry, Lomonosov Moscow State University, 1 Lenin Hills, 119991 Moscow, Russia
*
Author to whom correspondence should be addressed.
Academic Editor: Igor Djerdj
Molecules 2020, 25(8), 1856; https://doi.org/10.3390/molecules25081856
Received: 24 March 2020 / Revised: 10 April 2020 / Accepted: 15 April 2020 / Published: 17 April 2020
(This article belongs to the Special Issue 25th Anniversary of Molecules—Recent Advances in Nanochemistry)
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Abstract

A new solvent system for PbI2 based on HI solution in acetone with a low boiling point is proposed. High solubility of PbI2 is caused by the formation of iodoplumbate complexes, and reaches a concentration of 1.6 M. Upon its crystallization metastable solvate phases PbI2∙HI∙n{(CH3)2CO} are formed. The latter allows for their easy deposition on substrates in a form of smooth and uniform thin films by spin-coating. Through a fast acid-base reaction with a gaseous amine, the films of the intermediate phase can be completely converted to single-phase perovskite films. The developed method allows one to form smooth perovskite films with high crystallinity with a thickness up to 1 μm. Due to easy and fast processing, the developed method can be promising for perovskite technology upscaling. View Full-Text
Keywords: thin films; methylamine; hybrid perovskites; lead halide perovskites; perovskite solar cells; lead precursor; chemical conversion; solution deposition; fast processing; HPbI3 thin films; methylamine; hybrid perovskites; lead halide perovskites; perovskite solar cells; lead precursor; chemical conversion; solution deposition; fast processing; HPbI3
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MDPI and ACS Style

A. Fateev, S.; I. Marchenko, E.; A. Petrov, A.; A. Goodilin, E.; B. Tarasov, A. New Acidic Precursor and Acetone-Based Solvent for Fast Perovskite Processing via Proton-Exchange Reaction with Methylamine. Molecules 2020, 25, 1856. https://doi.org/10.3390/molecules25081856

AMA Style

A. Fateev S, I. Marchenko E, A. Petrov A, A. Goodilin E, B. Tarasov A. New Acidic Precursor and Acetone-Based Solvent for Fast Perovskite Processing via Proton-Exchange Reaction with Methylamine. Molecules. 2020; 25(8):1856. https://doi.org/10.3390/molecules25081856

Chicago/Turabian Style

A. Fateev, Sergey; I. Marchenko, Ekaterina; A. Petrov, Andrey; A. Goodilin, Eugene; B. Tarasov, Alexey. 2020. "New Acidic Precursor and Acetone-Based Solvent for Fast Perovskite Processing via Proton-Exchange Reaction with Methylamine" Molecules 25, no. 8: 1856. https://doi.org/10.3390/molecules25081856

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