	US 12,243,740 B2
	Enhanced perovskite materials for photovoltaic devices
Michael D. Irwin, Heath, TX (US); Michael Holland, Dallas, TX (US); and Nicholas Anderson, Dallas, TX (US)
Assigned to CubicPV Inc., Bedford, MA (US)
Filed by CubicPV Inc., Dallas, TX (US)
Filed on Oct. 28, 2019, as Appl. No. 16/665,815.
Claims priority of provisional application 62/770,313, filed on Nov. 21, 2018.
Prior Publication US 2020/0157125 A1, May 21, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. C07F 7/24 (2006.01); C30B 29/22 (2006.01); H01L 21/02 (2006.01); H10K 10/29 (2023.01); H10K 10/46 (2023.01); H10K 30/00 (2023.01); H10K 30/10 (2023.01)

CPC H01L 21/02197 (2013.01) [C07F 7/24 (2013.01); C30B 29/22 (2013.01); H10K 10/29 (2023.02); H10K 10/478 (2023.02); H10K 30/10 (2023.02); H10K 30/451 (2023.02); C01P 2002/34 (2013.01); C07B 2200/13 (2013.01)]

4 Claims

1. A perovskite material comprising:

a perovskite crystal lattice having a formula of CMX₃; and

bulky organic cations residing near a surface or a grain boundary of the perovskite crystal lattice and substituted in the perovskite crystal lattice, wherein the bulky organic cations are selected from the group consisting of butane-1,4-diammonium, octane-1,8-diammonium, bis(4-aminobutyl)-ammonium, and tris(4-aminobutyl)-ammonium, wherein at least one of the bulky organic cations residing less than 50 nm into the perovskite material crystal lattice from the surfaces or the grain boundaries of the perovskite material crystal lattice, and wherein a tail group of at least one of the bulky organic cations is not chemically connected to the surfaces or grain boundaries of the perovskite material, and wherein at least one of the bulky cations is substituted for least two C cations in the perovskite crystal lattice;

wherein:

C selected from the group consisting of methylammonium, and formamidinium;

M is Pb; and

X comprises one or more anions each selected from the group consisting of halides.