公开(公告)号：US20160251303A1

公开(公告)日：2016-09-01

申请号：US15054988

申请日：2016-02-26

申请人： Cornell University

发明人： David T. MOORE ,  Hiroaki SAI ,  Kwan Wee TAN ,  Lara A. Estroff ,  Ulrich B. Wiesner

IPC分类号： C07C211/63 ,  B05D3/00

CPC分类号： B05D3/007 ,  B05D1/005 ,  B05D3/0254 ,  C23C18/1204 ,  C23C18/1245 ,  C23C18/1291 ,  H01L51/4213 ,  Y02P20/542

摘要： A film comprising a crystalline halide perovskite composition having the following formula: AMX3   (1) wherein: A is an organic cation selected from the group consisting of methylammonium, tetramethylammonium, formamidinium, and guanidinium; M is at least one divalent metal; and X is independently selected from halide atoms; wherein the crystalline film of the halide perovskite composition possesses at least one of an average grain size of at least 30 microns, substantial crystal orientation evidenced in an ordering parameter of at least 0.6, and a level of crystallinity of at least 90%. Methods for producing films of these halide perovskite compositions using ionic liquids instead of volatile organic solvents are also described herein.

摘要翻译： 一种包含具有下式的结晶卤化物钙钛矿组合物的膜：AMX3（1）其中：A是选自甲基铵，四甲基铵，甲脒和胍的有机阳离子; M是至少一种二价金属; 并且X独立地选自卤素原子; 其中所述卤化钙钙钛矿组合物的结晶膜具有至少30微米的平均晶粒尺寸，在至少0.6的有序参数中证实的显着晶体取向和至少90％的结晶度水平中的至少一种。 本文还描述了使用离子液体代替挥发性有机溶剂来生产这些卤化钙钙钛矿组合物的膜的方法。