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US 8,710,730 B2Granted
Luminescent nanosheets, and fluorescent illuminators, solar cells and color displays utilizing the same as well as nanosheet paints
AssigneeNational Institute for Materials Science
InventorsTadashi Ozawa, Takayoshi Sasaki
Life of this patent
Estimating the term…
Abstract
A luminescent nanosheet has perovskite octahedral crystals combined together in a planar configuration, and the octahedral crystals each have a multistacked crystal sheet structure wherein the octahedral crystals are multistacked over at least 3 folds in the direction vertical to a sheet plane, and an element providing a luminescence center is solid-solubilized between the multistacked octahedral crystals.
Claims2
A nanosheet paint, comprising:
- a nanosheet in which perovskite octahedral crystal units are linked in a planar configuration dispersed in a disperse medium,
- wherein an X value in following equation found from a vapor pressure of the disperse medium and a concentration of the nanosheet is in a range of less than 4.9×106 to greater than 3.8×103:
- X=C×V4.01
- where C is the concentration (M) of the nanosheet, and
- V is a saturation vapor pressure (torr) of a solvent at 25° C. and 1 atm.
2 more elements
A nanosheet paint, comprising:
- a nanosheet in which perovskite octahedral crystal units are linked in a planar configuration dispersed in a disperse medium,
- wherein an X value in following equation found from a vapor pressure of the disperse medium and a concentration of the nanosheet is in a range of less than 4.9×106 to greater than 3.8×103:
- X=C×V4.01
- where C is the concentration (M) of the nanosheet, and V is a saturation vapor pressure (torr) of a solvent at 25° C. and 1 atm,
- wherein each of the perovskite octahedral crystal units comprises a tantalum oxide or a niobium oxide, and
- an element providing a luminescence center is solid solubilized between the stacked octahedral crystal units.
3 more elements
Dependencies are inferred from the claim text.