Abstract:
Methods of fabricating semiconductor device are provided including forming first and second material layers for a first transistor using epitaxial growth processes. A recess region is formed by partially etching the first and second material layers. Third and fourth material layers for a second transistor are formed using epitaxial growth processes.
Abstract:
A semiconductor device includes a buffer layer on a substrate, the buffer layer having a lattice constant different from that of the substrate, a fin structure upwardly protruding from the buffer layer, a gate electrode crossing over the fin structure, a cladding layer at a side of the fin structure and covering a top surface and sidewalls of the fin structure, and an interfacial layer between the cladding layer and the fin structure, the interfacial layer including a same element as the buffer layer.
Abstract:
A method of fabricating a semiconductor device includes forming a channel layer on a substrate, forming a sacrificial layer on the channel layer, forming a hardmask pattern on the sacrificial layer, and performing a patterning process using the hardmask pattern as an etch mask to form a channel portion with an exposed top surface. The channel and sacrificial layers may be formed of silicon germanium, and the sacrificial layer may have a germanium content higher than that of the channel layer.
Abstract:
A CMOS semiconductor FinFET device and a method for manufacturing a CMOS semiconductor FinFET device are disclosed. The device may comprise an nFinFET and a pFinFET having a channel region comprising Ge on a common strain-relaxed buffer layer comprising SiGe. The concentration of Ge in the channel regions is higher than the concentration of Ge in the strain-relaxed buffer layer. The device further comprises a source/drain region for the nFinFET, the source/drain region comprising SiGe; and a source/drain region for the pFinFET, the second source/drain region comprising Ge.
Abstract:
A semiconductor device includes fin patterns on a substrate, at least one gate electrode intersecting the fin patterns, source/drain regions on upper surfaces of the fin patterns, and at least one blocking layer on a sidewall of a first fin pattern of the fin patterns, the at least one blocking layer extending above an upper surface of the first fin pattern of the fin patterns, wherein a first source/drain region of the source/drain regions that is on the upper surface of the first fin pattern has an asymmetric shape and is in direct contact with the at least one blocking layer.
Abstract:
A semiconductor device includes: a first active pattern on a substrate and including a first active fin and a second active fin; a device isolation layer defining the first active pattern; a gate electrode crossing the first active pattern; a first source/drain pattern and a second source/drain pattern on the first active fin and the second active fin, respectively; an inner fin spacer between the first and second source/drain patterns; and a buffer layer between the first and second active fins, wherein the inner fin spacer includes: a first inner spacer portion contacting the first source/drain pattern; a second inner spacer portion contacting the second source/drain pattern; and an inner extended portion extending from the first and second inner spacer portions, wherein the inner extended portion is between the first and second active fins, wherein the buffer layer has a dielectric constant higher than that of the inner fin spacer.
Abstract:
Example semiconductor devices and methods for fabricating a semiconductor device are disclosed. An example device may include a substrate, a first semiconductor pattern spaced apart from the substrate, a first antioxidant pattern extending along a bottom surface of the first semiconductor pattern and spaced apart from the substrate, and a field insulating film on the substrate. The insulating film may cover at least a part of a side wall of the first semiconductor pattern. The first antioxidant pattern may include a first semiconductor material film doped with a first impurity.
Abstract:
A semiconductor device including an active pattern extending in a first direction; a channel pattern on the active pattern and including vertically stacked semiconductor patterns; a source/drain pattern in a recess in the active pattern; a gate electrode on the active pattern and extending in a second direction crossing the first direction, the gate electrode surrounding a top surface, at least one side surface, and a bottom surface of each of the semiconductor patterns; and a gate spacer covering a side surface of the gate electrode and having an opening to the semiconductor patterns, wherein the source/drain pattern includes a buffer layer covering inner sides of the recess, the buffer layer includes an outer side surface and an inner side surface, which are opposite to each other, and each of the outer and inner side surfaces is a curved surface that is convexly curved toward a closest gate electrode.
Abstract:
A semiconductor device including an active region defined in a substrate; at least one channel layer on the active region; a gate electrode intersecting the active region and on the active region and surrounding the at least one channel layer; and a pair of source/drain regions adjacent to both sides of the gate electrode, on the active region, and in contact with the at least one channel layer, wherein the pair of source/drain regions includes a selective epitaxial growth (SEG) layer, and a maximum width of each of the pair of source/drain regions in a first direction is 1.3 times or less a width of the active region in the first direction.
Abstract:
A semiconductor device includes: an active pattern disposed on a substrate; a source/drain pattern disposed on the active pattern; a channel pattern connected to the source/drain pattern, wherein the channel pattern includes semiconductor patterns stacked on each other and spaced apart from each other; and a gate electrode disposed on the channel pattern and extending in a first direction, wherein the gate electrode includes: a channel neighboring part adjacent to a first sidewall of a first semiconductor pattern of the stacked semiconductor patterns; and a body part spaced apart from the first semiconductor pattern, wherein the channel neighboring part is disposed between the body part and the first semiconductor pattern, wherein the first sidewall of the first semiconductor pattern has a first width, wherein the channel neighboring part has a second width less than the first width. The body part has a third width greater than the second width.