N-Methylformamide as a Source of Methylammonium Ions in the Synthesis of Lead Halide Perovskite Nanocrystals and Bulk Crystals

[Image: see text] We report chemical routes for the synthesis of both nanocrystals and bulk crystals of methylammonium (MA) lead halide perovskites employing N-methylformamide (NMF) as a source of MA ions. Colloidal nanocrystals were prepared by a transamidation reaction between NMF and an alkyl ami...

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Detalles Bibliográficos
Autores principales: Shamsi, Javad, Abdelhady, Ahmed L., Accornero, Sara, Arciniegas, Milena, Goldoni, Luca, Kandada, Ajay Ram Srimath, Petrozza, Annamaria, Manna, Liberato
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2016
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5210176/
https://www.ncbi.nlm.nih.gov/pubmed/28066824
http://dx.doi.org/10.1021/acsenergylett.6b00521
Descripción
Sumario:[Image: see text] We report chemical routes for the synthesis of both nanocrystals and bulk crystals of methylammonium (MA) lead halide perovskites employing N-methylformamide (NMF) as a source of MA ions. Colloidal nanocrystals were prepared by a transamidation reaction between NMF and an alkyl amine (oleylamine). The nanocrystals showed photoluminescence quantum yields reaching 74% for MAPbBr(3) and 60% for MAPbI(3). Bulk crystals were grown at room temperature, with no need for an antisolvent, by the acid hydrolysis of NMF. Important advantages of using NMF instead of MA salts are that the syntheses involve fewer steps and less toxic and less expensive chemicals.

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