申请人:IMEC VZW
公开号:US20200152395A1
公开(公告)日:2020-05-14
In a first aspect, the present invention relates to a perovskite material comprising negatively charged layers alternated with and neutralized by positively charged layers; the negatively charged layers having a general formula selected from the list consisting of: L
n−1
M
n
X
3n+1
, L
n
M
n
X
3n+2
, and L
n−1
M′
n
X
3n+3
, and the positively charged layers comprising: one or more organic ammonium cations independently selected from monovalent cations Q and divalent cations Q′, or a polyvalent cationic conjugated organic polymer Z, wherein Q, Q′ and Z comprise each a π-conjugated system in which at least 8 and preferably at least 10 atoms participate, L is a monovalent cation, M
n
are n independently selected metal cations averaging a valence of two, M′
n
are n independently selected metal cations averaging a valence equal to 2+2/n, X is a monovalent anion, and n is larger than 1.
在第一个方面,本发明涉及一种钙钛矿材料,其包括负电荷层和中和的正电荷层交替排列;负电荷层具有以下列表中选择的一般公式:Ln−1MnX3n+1、LnMnX3n+2和Ln−1M′nX3n+3,正电荷层包括:一个或多个独立选择的单价阳离子Q和双价阳离子Q′,或者一个多价阳离子共轭有机聚合物Z,其中Q、Q′和Z各自包括一个π共轭体系,其中至少有8个原子参与,L是一个单价阳离子,Mn是独立选择的平均价为二的金属阳离子,M′n是独立选择的平均价为2+2/n的金属阳离子,X是一个单价阴离子,n大于1。