Abstract:
A semiconductor structure for forming FinFETs is described. The semiconductor structure includes a semiconductor substrate, a plurality of odd fins of the FinFETs on the substrate, and a plurality of even fins of the FinFETs on the substrate between the odd fins of the FinFETs. The odd fins of the FinFETs are defined from the substrate. The even fins of the FinFETs are different from the odd fins of the FinFETs in at least one of the width and the material, and may be further different from the odd fins of the FinFETs in the height.
Abstract:
A strained silicon substrate structure includes a first transistor and a second transistor disposed on a substrate. The first transistor includes a first gate structure and two first source/drain regions disposed at two sides of the first gate structure. A first source/drain to gate distance is between each first source/drain region and the first gate structure. The second transistor includes a second gate structure and two source/drain doped regions disposed at two side of the second gate structure. A second source/drain to gate distance is between each second source/drain region and the second gate structure. The first source/drain to gate distance is smaller than the second source/drain to gate distance.
Abstract:
A strained silicon channel semiconductor structure comprises a substrate having an upper surface, a gate structure formed on the upper surface, at least one recess formed in the substrate at lateral sides of the gate structure, wherein the recess has at least one sidewall which has an upper sidewall and a lower sidewall concaved in the direction to the gate structure, and the included angle between the upper sidewall and horizontal plane ranges between 54.5°-90°, and an epitaxial layer filled into the two recesses.
Abstract:
The present invention provides a non-planar FET and a method of manufacturing the same. The non-planar FET includes a substrate, a fin structure, a gate and a gate dielectric layer. The fin structure is disposed on the substrate. The fin structure includes a first portion adjacent to the substrate wherein the first portion shrinks towards a side of the substrate. The gate is disposed on the fin structure. The gate dielectric layer is disposed between the fin structure and the gate. The present invention further provides a method of manufacturing the non-planar FET.
Abstract:
The present invention provides a method for forming a semiconductor structure, including the following steps: Firstly, a substrate is provided, the substrate has a first region defined thereon, a plurality of fin structure is disposed within the first region, and an insulating layer is disposed on the substrate and between each fin structure; next, a first material layer is then formed on the insulating layer, and the fin structures is exposed simultaneously, afterwards, the fin structure is partially removed, and an epitaxial layer is then formed on the top surface of each remained fin structure.
Abstract:
A method for fabricating a semiconductor device, and a semiconductor device made with the method are described. In the method, a cavity is formed in a substrate, a first epitaxy process is performed under a pressure higher than 65 torr to form a buffer layer in the cavity, and a second epitaxy process is performed to form a semiconductor compound layer on the buffer layer in the cavity. In the semiconductor device, the ratio (S/Y) of the thickness S of the buffer layer on a lower sidewall of the cavity to the thickness Y of the buffer layer at the bottom of the cavity ranges from 0.6 to 0.8.
Abstract:
A method for manufacturing a semiconductor device includes the following steps. A substrate including at least a fin layer and a plurality of gate electrodes is provided. A tilt and twist ion implantation is performed to form a plurality of doped regions in the fin layer. An etching process is performed to remove the doped regions to form a plurality of recesses in the fin layer.
Abstract:
A method for fabricating a semiconductor device, and a semiconductor device made with the method are described. In the method, a cavity is formed in a substrate, a first epitaxy process is performed under a pressure higher than 65 torr to form a buffer layer in the cavity, and a second epitaxy process is performed to form a semiconductor compound layer on the buffer layer in the cavity. In the semiconductor device, the ratio (S/Y) of the thickness S of the buffer layer on a lower sidewall of the cavity to the thickness Y of the buffer layer at the bottom of the cavity ranges from 0.6 to 0.8.
Abstract:
A manufacturing method of a semiconductor device is provided. The method includes at least the following steps. A gate structure is formed on a substrate. An epitaxial structure is formed on the substrate, wherein the epitaxial structure comprises SiGe, and the Ge concentration in the epitaxial structure is equal to or higher than 45%. A first cap layer is formed on the epitaxial structure, wherein the first cap layer comprises Si. The first cap layer is doped with boron for forming a flat top surface of the first cap layer.
Abstract:
A method of forming a semiconductor device is disclosed. At least one gate structure is provided on a substrate, wherein the gate structure includes a first spacer formed on a sidewall of a gate. A first disposable spacer material layer is deposited on the substrate covering the gate structure. The first disposable spacer material layer is etched to form a first disposable spacer on the first spacer. A second disposable spacer material layer is deposited on the substrate covering the gate structure. The second disposable spacer material layer is etched to form a second disposable spacer on the first disposable spacer. A portion of the substrate is removed, by using the first and second disposable spacers as a mask, so as to form two recesses in the substrate beside the gate structure. A stress-inducing layer is formed in the recesses.