Matrix-incorporated organic-inorganic metal halide perovskite nano-particles as luminescent material
AssigneeCambridge Enterprise Limited
InventorsSandeep Pathak, Henry James Snaith, Richard Friend
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Abstract
The present invention relates to a light emitting device comprising a light source and a luminescent material, which luminescent material comprises one or more matrix materials and two pluralities of nanoparticles, which two pluralities of nanoparticles comprise different perovskite compounds. The invention also relates to a luminescent material.
Claims20
A light emitting device comprising a light source and a luminescent material, which luminescent material comprises:
- one or more matrix materials, and, disposed in said one or more matrix materials,
- a first plurality of nanoparticles comprising a first crystalline compound, and
- a second plurality of nanoparticles comprising a second crystalline compound,
- wherein the first crystalline compound and the second crystalline compound are different perovskite compounds of formula (I):
- [A][M][X]3 (I)
- wherein:
- [A] is at least one monocation;
- [M] is at least one metal or metalloid dication;
- and
- [X] is at least one halide anion.
A luminescent material comprising one or more matrix materials and disposed in said one or more matrix materials:
- (i) a first plurality of nanoparticles comprising a first crystalline compound;
- and
- (ii) a second plurality of nanoparticles comprising a second crystalline compound,
- wherein said first and second crystalline compounds are different perovskite compounds of formula (I):
- [A][M][X]3 (I)
- wherein:
- [A] is at least one monocation;
- [M] is at least one metal or metalloid dication;
- and
- [X] is at least one halide anion.
A process for producing a luminescent material, which process comprises combining a first plurality of nanoparticles comprising a first crystalline compound, a second plurality of nanoparticles comprising a second crystalline compound and one or more matrix materials,
- wherein said first and second crystalline compounds are different perovskite compounds of formula (I):
- [A][M][X]3 (I)
- wherein:
- [A] is at least one monocation;
- [M] is at least one metal or metalloid dication;
- and
- [X] is at least one halide anion.
Dependencies are inferred from the claim text.