Optoelectronic device containing at least one active device layer having a wurtzite crystal structure, and methods of making same
First Claim
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1. A semiconductor structure, comprising:
- an optoelectronic device that includes;
an active device region comprising a semiconductor coating having a wurtzite crystal structure, wherein said semiconductor coating is selected from a group consisting of a II-VI semiconductor material or a I-VI semiconductor material, said active device region having a first side and a second side opposite said first side;
a first ohmic contact located on said first side of said active device region and in operative relation to said active device region; and
a second ohmic contact located on said second side of said active device region and in operative relation to said active device region and said first ohmic contact;
wherein said wurtzite crystal structure results from epitaxial growth of said semiconductor coating on a naturally lamellar single crystal substrate selected to promote said wurtzite crystal structure.
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Abstract
Optoelectronic devices, such as light-emitting diodes, laser diodes, image sensors, optical detectors, etc., made by depositing (growing) one or more epitaxial semiconductor layers on a monocrystalline lamellar/layered substrate so that each layer has a wurtzite crystal structure. In some embodiments, the layers are deposited and then one or more lamellas of the starting substrate are removed from the rest of the substrate. In one subset of such embodiments, the removed lamella(s) is/are partially or entirely removed. In other embodiments, one or more lamellas of the starting substrate are removed prior to depositing the one or more wurtzite-crystal-structure-containing layer(s).
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Citations
26 Claims
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1. A semiconductor structure, comprising:
an optoelectronic device that includes; an active device region comprising a semiconductor coating having a wurtzite crystal structure, wherein said semiconductor coating is selected from a group consisting of a II-VI semiconductor material or a I-VI semiconductor material, said active device region having a first side and a second side opposite said first side; a first ohmic contact located on said first side of said active device region and in operative relation to said active device region; and a second ohmic contact located on said second side of said active device region and in operative relation to said active device region and said first ohmic contact; wherein said wurtzite crystal structure results from epitaxial growth of said semiconductor coating on a naturally lamellar single crystal substrate selected to promote said wurtzite crystal structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A structure, comprising:
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a surface-emitting laser that includes; a pair of spaced mirrors defining a resonator cavity; and a light-emitting structure located within said resonator cavity, said light-emitting structure comprising a plurality of differently doped semiconductor layers composed of at least one II-VI semiconductor material, each of said differently doped semiconductor layers having a wurtzite crystal structure; wherein said resonator cavity is configured, and said at least one II-VI semiconductor material is selected, so that said surface-emitting laser emits visible light. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification