Stabilized emissive structures and methods of making
AssigneeGeneral Electric Company
InventorsAndrew David Deal, William Paul Minnear, Gregory Michael Gratson, David Jeffrey Bryan
Life of this patent
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Abstract
An emitter is disclosed. The emitter includes a base layer comprising an array of nanocavities on an emission surface of the base layer, wherein facets of the nanocavities are substantially along equivalent crystallographic planes of one or more families of planes having substantially equal surface energies, wherein the equivalent crystallographic planes have surface energies equal to or lower than a surface energy of the crystallographic plane of the emission surface. Methods of making such emitters and radiation sources including such emitters are also disclosed.
Claims24
An emitter comprising:
- a crystalline base layer material comprising an emission surface along a crystallographic plane of the material;
- and
- an array of nanocavities on the emission surface,
- wherein the nanocavities have a plurality of facets;
- wherein the plurality of facets are substantially along equivalent crystallographic planes of one or more families of planes of the material having substantially equal surface energies;
- and
- wherein the substantially equal surface energies are equal to or lower than a surface energy of the crystallographic plane of the emission surface.
A radiation source comprising:
- a base;
- a light-transmissive envelope coupled to the base;
- and
- an emitter disposed within the light-transmissive envelope, wherein the emitter comprises
- a crystalline base layer material comprising an emission surface along a crystallographic plane of the material;
- and
- an array of nanocavities on the emission surface,
- wherein the nanocavities have a plurality of facets;
- wherein the plurality of facets are substantially along equivalent crystallographic planes of one or more families of planes of the material having substantially equal surface energies;
- and
- wherein the substantially equal surface energies are equal to or lower than a surface energy of the crystallographic plane of the emission surface.
An emitter comprising:
- a crystalline base layer material comprising WC, W2C, HfN, or combinations thereof;
- an emission surface along a crystallographic plane of the material;
- and
- an array of nanocavities on the emission surface,
- wherein the nanocavities have a plurality of facets;
- wherein the plurality of facets are substantially along equivalent crystallographic planes of one or more family of planes of the material having substantially equal surface energies;
- and
- wherein the substantially equal surface energies are equal to or lower than a surface energy of the crystallographic plane of the emission surface.
Dependencies are inferred from the claim text.