Shamsi Javad, Abdelhady Ahmed L, Accornero Sara, Arciniegas Milena, Goldoni Luca, Kandada Ajay Ram Srimath, Petrozza Annamaria, Manna Liberato
Nanochemistry Department, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy; Dipartimento di Chimica e Chimica Industriale, Università degli Studi di Genova, Via Dodecaneso 31, 16146 Genova, Italy.
Nanochemistry Department, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy; Department of Chemistry, Faculty of Science, Mansoura University, Mansoura 35516, Egypt.
ACS Energy Lett. 2016 Nov 11;1(5):1042-1048. doi: 10.1021/acsenergylett.6b00521. Epub 2016 Oct 21.
We report chemical routes for the synthesis of both nanocrystals and bulk crystals of methylammonium (MA) lead halide perovskites employing -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 and 60% for MAPbI. 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.
我们报道了以N-甲基甲酰胺（NMF）作为甲胺（MA）离子源来合成甲胺铅卤化物钙钛矿纳米晶体和块状晶体的化学路线。通过NMF与烷基胺（油胺）之间的转酰胺反应制备了胶体纳米晶体。对于MAPbBr，纳米晶体的光致发光量子产率达到74%，对于MAPbI则为60%。通过NMF的酸水解在室温下生长块状晶体，无需反溶剂。使用NMF而非MA盐的重要优点是合成步骤更少，且使用的化学物质毒性更小、成本更低。
