Light-emitting device including nitride-based semiconductor omnidirectional reflector
First Claim
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1. A light-emitting device comprising:
- a base nitride semiconductor layer;
a nitride-based reflector disposed on the base nitride semiconductor layer; and
a light-emitting unit disposed on the nitride-based reflector,wherein the nitride-based reflector includes undoped nitride semiconductor layers and heavily-doped nitride semiconductor layers that are alternately stacked, each of the heavily-doped nitride semiconductor layers has a smaller area than those of adjacent undoped nitride semiconductor layers to have air layers between the adjacent undoped nitride semiconductor layers, and the base nitride semiconductor layer has an area not smaller than the area of the undoped nitride semiconductor layers and has the same doping as the heavily-doped nitride semiconductor layers.
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Abstract
A light-emitting device includes a nitride-based semiconductor reflector. The light-emitting device includes a nitride-based reflector and a light-emitting unit that is disposed on the nitride-based reflector. The nitride-based reflector includes undoped nitride semiconductor layers and heavily-doped nitride semiconductor layers that are alternately stacked. The heavily doped nitride semiconductor layers are etched at their edges to form air layers between adjacent undoped nitride semiconductor layers.
9 Citations
9 Claims
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1. A light-emitting device comprising:
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a base nitride semiconductor layer; a nitride-based reflector disposed on the base nitride semiconductor layer; and a light-emitting unit disposed on the nitride-based reflector, wherein the nitride-based reflector includes undoped nitride semiconductor layers and heavily-doped nitride semiconductor layers that are alternately stacked, each of the heavily-doped nitride semiconductor layers has a smaller area than those of adjacent undoped nitride semiconductor layers to have air layers between the adjacent undoped nitride semiconductor layers, and the base nitride semiconductor layer has an area not smaller than the area of the undoped nitride semiconductor layers and has the same doping as the heavily-doped nitride semiconductor layers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A light-emitting device comprising:
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a nitride-based reflector; and a light-emitting unit disposed on the nitride-based reflector, wherein the nitride-based reflector includes lightly-doped nitride semiconductor layers and heavily-doped nitride semiconductor layers that are alternately stacked, the lightly-doped and heavily-doped nitride semiconductor layers are doped with impurities of a same type, and each of the heavily-doped nitride semiconductor layers has a smaller area than those of adjacent lightly-doped nitride semiconductor layers so as to have air layers between the adjacent lightly-doped nitride semiconductor layers.
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Specification