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

Javad Shamsi, Ahmed L. Abdelhady, Sara Accornero, Milena Arciniegas, Luca Goldoni, Ajay Ram Srimath Kandada, Annamaria Petrozza, Liberato Manna

Research output: Contribution to journalArticlepeer-review

59 Scopus citations

Abstract

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 MAPbBr3 and 60% for MAPbI3. 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.

Original languageBritish English
Pages (from-to)1042-1048
Number of pages7
JournalACS Energy Letters
Volume1
Issue number5
DOIs
StatePublished - 11 Nov 2016

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