摘要:
A semiconductor wafer includes a base wafer, a first crystal layer, a second crystal layer and a third crystal layer. The first crystal layer has a first surface having a same orientation as the base wafer, and a second surface having a different orientation from the first surface, the second crystal layer has a third surface having the same orientation as the first surface, and a fourth surface having the same orientation as the second surface, the third crystal layer is in contact with a part of the third surface and the fourth surface. A thickness ratio of the second crystal layer in a region adjoining the first surface to a region adjoining the second surface is larger than a thickness ratio of the third crystal layer in a region adjoining the third surface to a region adjoining the fourth surface.
摘要:
Methods and apparatus for forming semiconductor structures are disclosed herein. In some embodiments, a semiconductor structure may include a first germanium carbon layer having a first side and an opposing second side; a germanium-containing layer directly contacting the first side of the first germanium carbon layer; and a first silicon layer directly contacting the opposing second side of the first germanium carbon layer. In some embodiments, a method of forming a semiconductor structure may include forming a first germanium carbon layer atop a first silicon layer; and forming a germanium-containing layer atop the first germanium carbon layer.
摘要:
Methods and apparatus for forming semiconductor structures are disclosed herein. In some embodiments, a semiconductor structure may include a first germanium carbon layer having a first side and an opposing second side; a germanium-containing layer directly contacting the first side of the first germanium carbon layer; and a first silicon layer directly contacting the opposing second side of the first germanium carbon layer. In some embodiments, a method of forming a semiconductor structure may include forming a first germanium carbon layer atop a first silicon layer; and forming a germanium-containing layer atop the first germanium carbon layer.
摘要:
Provided is an optical device including a base wafer containing silicon, a plurality of seed crystals disposed on the base wafer, and a plurality of Group 3-5 compound semiconductors lattice-matching or pseudo lattice-matching the plurality of seed crystals. At least one of the Group 3-5 compound semiconductors has a photoelectric semiconductor formed therein, the photoelectric semiconductor including a light emitting semiconductor that emits light in response to a driving current supplied thereto or a light receiving semiconductor that generates a photocurrent in response to light applied thereto, and at least one of the plurality of Group 3-5 compound semiconductors other than the Group 3-5 compound semiconductor having the photoelectric semiconductor has a heterojunction transistor formed therein.
摘要:
A thin film transistor including a gate electrode; an active layer insulated from the gate electrode; a source electrode and a drain electrode that are insulated from the gate electrode and are electrically connected to the active layer; a first etch stopper layer that is formed of an insulation material and contacts a portion of the active layer located between areas of the active layer that are electrically connected to the source electrode and the drain electrode; a second etch stopper layer on the first etch stopper layer, the second etch stopper layer being formed of an insulation material of a same type as the insulation material used to form the first etch stopper layer, the second etch stopper layer having a higher density than the first etch stopper layer; and a third etch stopper layer on the second etch stopper layer.
摘要:
Provided is an optical device including a base wafer containing silicon, a plurality of seed crystals disposed on the base wafer, and a plurality of Group 3-5 compound semiconductors lattice-matching or pseudo lattice-matching the plurality of seed crystals. At least one of the Group 3-5 compound semiconductors has a photoelectric semiconductor formed therein, the photoelectric semiconductor including a light emitting semiconductor that emits light in response to a driving current supplied thereto or a light receiving semiconductor that generates a photocurrent in response to light applied thereto, and at least one of the plurality of Group 3-5 compound semiconductors other than the Group 3-5 compound semiconductor having the photoelectric semiconductor has a heterojunction transistor formed therein.
摘要:
A semiconductor structure integrates wide bandgap semiconductors with silicon. The semiconductor structure includes: a substrate; a SiCAlN region formed over the substrate, and an active region formed over the SiCAlN region. The substrate can comprise silicon, silicon carbide (SiC) or silicon germanium (SiGe). The active region can include a gallium nitride material region, such as GaN, AlGaN, InGaN or AlInGaN. It also can include AlN and InN region. The structure also can include a crystalline oxide interface formed between the substrate and the SiCAlN region. A preferred crystalline oxide interface is SinullAlnullOnullN. The active layer can be formed by known fabrication processes, including metal organic chemical vapor deposition or by atomic layer epitaxy. The crystalline oxide interface is normally formed by growing SiCAlN on Si(111) via a crystalline oxide interface, but can also be formed by metal organic chemical vapor deposition or by atomic layer epitaxy.
摘要:
A semiconductor wafer is provided. The semiconductor wafer comprises a sacrificial layer, a first semiconductor crystal layer, and a second semiconductor crystal layer above a semiconductor crystal layer forming wafer, wherein the semiconductor crystal layer forming wafer, the sacrificial layer, the first semiconductor crystal layer and the second semiconductor crystal layer are arranged in the order of the semiconductor crystal layer forming wafer, the sacrificial layer, the first semiconductor crystal layer and the second semiconductor crystal layer, a first atom of one type selected from a plurality of types of atoms constituting the semiconductor crystal layer forming wafer or the sacrificial layer is contained in the first semiconductor crystal layer and the second semiconductor crystal layer as an impurity, and the concentration of the first atom in the second semiconductor crystal layer is lower than the concentration of the first atom in the first semiconductor crystal layer.
摘要:
A semiconductor structure includes a first semiconductor region. The first semiconductor region includes a first semiconductor layer composed of a group IV semiconductor material having a top surface and a back surface. The first semiconductor layer has an opening in the top surface to at least a depth greater than an aspect ratio trapping (ART) distance. The first semiconductor region also has a second semiconductor layer composed of a group III/V semiconductor compound deposited within the opening and on the top surface of the first semiconductor layer. The second semiconductor layer forms an ART region from the bottom of the opening to the ART distance.