Vertical cavity-emitting porous silicon carbide light-emitting diode device and preparation thereof
First Claim
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1. A light emitting diode device comprising:
- a quarter-wavelength mirror structure formed within a substrate of silicon carbide of a first conductivity, said quarter-wavelength mirror structure comprising a multilayer porosity superlattice;
a transparent layer of semiconducting material of a second conductivity opposite to said first conductivity;
a light emitting layer of semiconducting material of said first conductivity disposed between said quarter-wavelength mirror structure and said transparent layer of semiconducting material.
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Abstract
A multilayered LED structure which has an active light-emitting layer of porous silicon carbide and a sequence of layers of porous silicon carbide underneath which serves as a quarter-wavelength multilayer mirror. The result is the electroluminescent emission of spectrally narrow visible light in the deep blue to UV range, in a highly directed pattern. The deep, intense blue luminescence is accomplished via the appropriate preparation and passivation of a single porous silicon carbide layer, followed by the deposition of a transparent, semiconducting layer, such as ITO (In2 O3) or ZnO.
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10 Claims
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1. A light emitting diode device comprising:
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a quarter-wavelength mirror structure formed within a substrate of silicon carbide of a first conductivity, said quarter-wavelength mirror structure comprising a multilayer porosity superlattice; a transparent layer of semiconducting material of a second conductivity opposite to said first conductivity; a light emitting layer of semiconducting material of said first conductivity disposed between said quarter-wavelength mirror structure and said transparent layer of semiconducting material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification