MOLTECH ANJOU, UMR-CNRS 6200, Université d'Angers, 2 Bd Lavoisier, 49045, Angers, France.
Institut des Molécules et Matériaux du Mans, UMR-CNRS 6283, Le Mans Université, Avenue Olivier Messiaen, 72085, Le Mans cedex 9, France.
Angew Chem Int Ed Engl. 2017 Dec 11;56(50):16067-16072. doi: 10.1002/anie.201710021. Epub 2017 Nov 15.
3D and 2D hybrid perovskites, which have been known for more than 20 years, have emerged recently as promising materials for optoelectronic applications, particularly the 3D compound (CH NH )PbI (MAPI). The discovery of a new family of hybrid perovskites called d-MAPI is reported: the association of PbI with both methyl ammonium (MA ) and hydroxyethyl ammonium (HEA ) cations leads to a series of five compounds with general formulation (MA) (HEA) [Pb I ]. These materials, which are lead- and iodide-deficient compared to MAPI while retaining 3D architecture, can be considered as a bridge between the 2D and 3D materials. Moreover, they can be prepared as crystallized thin films by spin-coating. These new 3D materials appear very promising for optoelectronic applications, not only because of their reduced lead content, but also in account of the large flexibility of their chemical composition through potential substitutions of MA , HEA , Pb and I ions.
3D 和 2D 混合钙钛矿，这一材料在 20 多年前就已被发现，最近作为光电应用的有前景的材料出现，特别是 3D 化合物（CH₃NH₃）PbI₃（MAPbI₃）。本文报道了一类新型的混合钙钛矿，称为 d-MAPbI₃：PbI₃与甲脒（MA）和羟乙基脒（HEA）阳离子的结合导致了一系列具有一般通式（MA）（HEA）[PbI₃]的五种化合物。与 MAPbI₃相比，这些材料中含有较少的铅和碘，同时保留了 3D 结构，可以被认为是 2D 和 3D 材料之间的桥梁。此外，它们可以通过旋涂制备成结晶薄膜。这些新的 3D 材料在光电应用方面非常有前景，不仅因为它们的铅含量较低，而且还因为它们的化学成分具有很大的灵活性，可以通过 MA、HEA、Pb 和 I 离子的潜在取代来实现。
