Diamond coating of silicon-carbide LEDs
First Claim
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1. A silicon-carbide-based LED comprising:
- a silicon carbide crystal diode adapted to generate light;
a diamond coating grown on a surface of the silicon carbide crystal diode, the diamond coating consisting of diamond; and
a phosphor layer disposed such that the diamond coating is between the silicon carbide crystal and at least a portion of the phosphor layer,wherein the diamond coating provides a region having an index of refraction intermediate between an index of refraction of the silicon carbide crystal diode and an index of refraction of the phosphor layer.
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Abstract
In silicon-carbide based light emitting diodes (LEDs) and other similar applications, diamond crystals are used to provide an intermediate refractive index that permits more of the ultraviolet light generated in the diode to reach the phosphors, producing a brighter light with greater efficiency.
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Citations
11 Claims
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1. A silicon-carbide-based LED comprising:
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a silicon carbide crystal diode adapted to generate light; a diamond coating grown on a surface of the silicon carbide crystal diode, the diamond coating consisting of diamond; and a phosphor layer disposed such that the diamond coating is between the silicon carbide crystal and at least a portion of the phosphor layer, wherein the diamond coating provides a region having an index of refraction intermediate between an index of refraction of the silicon carbide crystal diode and an index of refraction of the phosphor layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A silicon-carbide-based LED for directing light to a target, the LED comprising:
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a silicon carbide crystal diode adapted to generate light; and a diamond coating grown on a surface of the silicon carbide crystal diode, wherein the diamond coating consists of a plurality of diamond crystals, each of the plurality of diamond crystals having a size of 1 nanometer or greater, wherein the diamond coating provides a region having an index of refraction intermediate between an index of refraction of the silicon carbide crystal diode and an index of refraction of an intended target of light produced by the LED. - View Dependent Claims (11)
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Specification