US Patent 7556974 Optical semiconductor device with multiple quantum well structure
Patent 7556974 was granted and assigned to Osram Opto Semiconductors GmbH on July, 2009 by the United States Patent and Trademark Office.
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An optical semiconductor device with a multiple quantum well structure, in which well layers and barrier layers comprising various types of semiconductor layers are alternately layered, in which device well layers (6a) of a first composition based on a nitride semiconductor material with a first electron energy and barrier layers (6b) of a second composition of a nitride semiconductor material with electron energy which is higher in comparison with the first electron energy are provided, followed, seen in the direction of growth, by a radiation-active quantum well layer (6c), for which the essentially non-radiating well layers (6a) and the barrier layers (6b) arranged in front form a superlattice.
US Patent 07556974 Optical semiconductor device with multiple quantum well structure US Patent 7556974 Optical semiconductor device with multiple quantum well structure
US Patent 07556974 Optical semiconductor device with multiple quantum well structure
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