Patent ID: 11920042
Assignee: THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  H  Y | IPC C  H

Claim 0:
1. An ink solution, comprising:
i. a composition of Formula (I)

ABX3  (I)

wherein A is a cation selected from the group consisting of methylammonium (MA), tetramethylammonium (TMA), formamidinium (FA), cesium (Cs), rubidium (Rb), potassium (K), sodium (Na), butylammonium (BAH), phenethylammonium (PEA), phenylammonium (PHA), guanidinium (GU), and a combination thereof;
B is at least one divalent metal; and
X is at least one halide;

ii. a compound of Formula (II)

NH2—R1—NH2  (II)

wherein R1 is selected from the group consisting of linear or branched C3-C50 alkyl, C6-C12 aryl, C1-C20 alkyl-C6-C12 aryl-C1-C20 alkyl, C6-C12 aryl-C1-C10 alkyl-C6-C12 aryl, and graphene, wherein one or more carbon atoms in said C3-C50 alkyl or C1-C20 alkyl is optionally substituted with O, P, S, or NH;
wherein said C3-C50 alkyl, C6-C12 aryl, C1-C20 alkyl-C6-C12 aryl-C1-C20 alkyl, C6-C12 aryl-C1-C10 alkyl-C6-C12 aryl, or graphene is optionally substituted with one or more substituents, each independently selected from the group consisting of hydroxy, halo, haloalkoxy, alkoxy, haloalkyl, hydroxyalkyl, oxo, cyano, nitro, thiol, carboxyl, sulfonyl, sulfinyl, thiocyanate, —S(O)OH, —S(O)2OH, sulfonamido, —CH2OP(O)(OH)2, —OP(O)(OH)2, —R2R3P(O)4, and —NR4R5, wherein, R2, R3, R4 and R5 are each independently hydrogen or C1-C6 alkyl; and

iii. a solvent,
wherein said compound of Formula II comprises between about 0.001 wt % and about 0.30 wt % of the ink solution.