Semiconductor light-emitting device using graded multi quantum barrier
First Claim
1. A semiconductor light-emitting device comprising:
- an active layer for generating a light, the active layer having a multi quantum well structure in which a plurality of barrier layers and a plurality of quantum well layers are alternately arranged; and
a pair of cladding layers which sandwiches the active layer to confine the light within the active layer, wherein each of the cladding layers has a multi quantum barrier structure in which a plurality of barrier layers and a plurality of well layers are alternately arranged, and wherein the multi quantum barrier layers of each of the cladding layers are graded in configuration.
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Abstract
In a semiconductor light-emitting device, an active layer has a multi quantum well structure (MQW) that a plurality of barrier layers and a plurality of quantum well layers are alternately arranged. Each of the cladding layers has a multi quantum barrier structure (MQB) that a plurality of barrier layers and a plurality of well layers are alternately arranged. A configuration of the multi quantum barrier (MQB) of each of the cladding layers varies in a graded or stepwise form. Thus, carriers are suppressed from overflowing from the active layer, preventing cut-off of a guided wave mode, increasing a reflectance of electrons entering the energy barriers and improving a temperature characteristic.
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Citations
6 Claims
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1. A semiconductor light-emitting device comprising:
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an active layer for generating a light, the active layer having a multi quantum well structure in which a plurality of barrier layers and a plurality of quantum well layers are alternately arranged; and
a pair of cladding layers which sandwiches the active layer to confine the light within the active layer, wherein each of the cladding layers has a multi quantum barrier structure in which a plurality of barrier layers and a plurality of well layers are alternately arranged, and wherein the multi quantum barrier layers of each of the cladding layers are graded in configuration. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification