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US 2017/0283693 A1Published application
Luminescent halide perovskites, methods, compositions, and devices
AssigneeThe Florida State University Research Foundation, Inc.
InventorsBiwu Ma, Zhao Yuan
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Abstract
Provided herein are metal halide perovskites, which may have a layered structure. The metal halide perovskites may emit white light. Also provided herein are neat films of the metal halide perovskites, films comprising a polymer matrix and the metal halide perovskites, and devices that include the metal halide perovskites. Methods of making metal halide perovskites also are provided.
Claims30
A metal halide perovskite comprising a crystal having a unit cell according to formula (I):
- (A-R—B)MX4 (I);
- wherein the crystal has a layered structure;
- M is a metal atom selected from Pb, Sn, Sb, Cu, Ge, Mn, Co, Bi, Ni, Zn, or Eu;
- X is a halide ion selected from Cl, Br, or I;
- and
- (A-R—B) is a ligand in which (i) A and B are independently selected from a primary ammonium cation, a secondary ammonium cation, or a tertiary ammonium cation, and (ii) R comprises a moiety of 4 to 12 atomic units, wherein each atomic unit comprises a carbon atom, a sulfur atom, or an oxygen atom.
3 more elements
A method of making a metal halide perovskite, the method comprising:
- contacting a metal halide and an organic acid in a non-polar organic liquid;
- and
- adding a ligand precursor to the non-polar organic liquid;
- wherein the ligand precursor comprises a compound according to formula (II)
- (A′-R—B′) (II),
- wherein A′ and B′ are independently selected from a primary amine, a secondary amine, or a tertiary amine, and
- R comprises a moiety of 4 to 12 atomic units, wherein each atomic unit comprises a carbon atom, a sulfur atom, or an oxygen atom;
- and
- the metal halide is selected from lead(II) halide, tin(II) halide, antimony(III) halide, copper(II) halide, germanium(II) halide, manganese(II) halide, cobalt(II) halide, bismuth(III) halide, nickel(II) halide, zinc(II) halide, or europium(III) halide.
6 more elements
Dependencies are inferred from the claim text.