Eu2+-activated aluminates nanobelts, whiskers, and powders, methods of making the same, and uses thereof
AssigneeUniversity of Georgia Research Foundation, Inc.
InventorsZhengwei Pan, Feng Liu, Xufan Li
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Abstract
Embodiments of the present disclosure relate to visible luminescent phosphors, visible luminescent nanobelt phosphors, methods of making visible luminescent phosphors, methods of making visible luminescent nanobelt phosphors, mixtures of visible luminescent phosphors, methods of using visible luminescent phosphors, waveguides including visible luminescent phosphors, white light emitting phosphors, and the like.
Claims15
A method of making a phosphor nanobelt, comprising:
- mixing an amount of each of Eu2O3 and Al2O3 with an amount of either of SrO or BaO, ground with an amount of graphite powder to form a mixture;
- and
- heating the mixture to about 1350-1550° C. for about 1-3 hours under about 1-50 Torr of flowing argon to form a phosphor nanobelt.
A method of making a phosphor whisker, comprising:
- mixing an amount of each of Eu2O3 and Al2O3 with an amount of either of SrO or BaO, ground with an amount of graphite powder and a catalyst selected from the group consisting of:
- Fe2O3, NiO, SiO2, and GeO2, to form a mixture;
- and
- heating the mixture to about 1350-1550° C. for about 1-3 hours under about 1-50 Torr of flowing argon to form a phosphor whisker.
A method of making a phosphor powder, comprising:
- mixing an amount of each of Eu2O3 and Al2O3 with an amount of either of SrO or BaO, ground with an amount of graphite powder to form a mixture;
- and
- heating the mixture alongside an amount of Al2O3 powder, to about 1350-1550° C. for about 1-3 hours under about 1-50 Torr of flowing argon to form a phosphor powder.
A europium aluminate phosphor comprising:
- a material including a phosphor selected from the group consisting of:
- a phosphor having the formula (EuO)(Al2O3)3, a phosphor having the formula (Sr0.9Eu0.1O)4(Al2O3)5, a phosphor having the formula (Ba0.99Eu0.01O)4(Al2O3)5, and a phosphor having the formula (Ba0.75Eu0.25O)4(Al2O3)5.
Dependencies are inferred from the claim text.