Abstract: A method of forming a layer, including forming an insulation layer having an opening on a single crystalline substrate, the opening partially exposing an upper face of the substrate, forming a first seed layer in the opening, converting an upper portion of the first seed layer to a first amorphous layer, converting the first amorphous layer to a second seed layer, forming a second amorphous layer on the second seed layer, and converting the second amorphous layer to a single crystalline layer.

Abstract: First and second preliminary epitaxial layers are grown from single-crystalline seeds in openings in an insulation layer until the first and second epitaxial layers are connected to each other. While the first and second preliminary epitaxial layers are being grown, a connection structure of a material having an amorphous state is formed on a portion of the insulation layer located between the first and second preliminary epitaxial layers. The material having an amorphous state is then changed into material having a single-crystalline state. Thus, portions of the first and second epitaxial layers are connected to each other through the connection structure so that the epitaxial layers and the connection structure constitute a single-crystalline structure layer that is free of voids for use as a channel layer or the like of a semiconductor device.

Abstract: In a semiconductor device and a method of manufacturing the semiconductor device, a plug and a channel structure are formed. The plug fills an opening and the channel structure extends upwardly from the plug. The channel structure has a substantially vertical sidewall. The opening is formed through an insulation structure located on a substrate. The plug and the channel structure comprise a material in a single crystalline state that is changed from an amorphous state by an irradiation of a laser beam. The channel structure is doped with impurities such as boron, phosphorus or arsenic.

Abstract: A method of forming a fin field effect transistor on a semiconductor substrate includes forming an active region in the substrate, forming an epitaxial layer on the active region, and removing a portion of the epitaxial layer to form a vertical fin on the active region. The fin has a width that is narrower than a width of the active region. Removing a portion of the epitaxial layer may include oxidizing a surface of the epitaxial layer and then removing the oxidized surface of the epitaxial layer to decrease the width of the fin. The epitaxial layer may be doped in situ before removing a portion of the epitaxial layer. The method further includes forming a conductive layer on a top surface and on sidewalls of the fin. Related transistors are also discussed.

Abstract: A method of forming a semiconductor device may include forming a fin structure extending from a substrate. The fin structure may include first and second source/drain regions and a channel region therebetween, and the first and second source/drain regions may extend a greater distance from the substrate than the channel region. A gate insulating layer may be formed on the channel region, and a gate electrode may be formed on the gate insulating layer so that the gate insulating layer is between the gate electrode and the channel region. Related devices are also discussed.

Abstract: In a method of manufacturing a stacked semiconductor device, a seed layer including impurity regions may be prepared. A first insulation interlayer pattern having a first opening may be formed on the seed layer. A first SEG process may be carried out to form a first plug partially filling the first opening. A second SEG process may be performed to form a second plug filling the first opening. A third SEG process may be carried out to form a first channel layer on the first insulation interlayer pattern. A second insulation interlayer may be formed on the first channel layer. The second insulation interlayer, the first channel layer and the second plug arranged on the first plug may be removed to expose the first plug. The first plug may be removed to form a serial opening. The serial opening may be filled with a metal wiring.

Abstract: In a method of forming a single crystalline structure and a method of manufacturing a semiconductor device by using the method of forming the single crystalline structure, a single crystalline seed having elements combining with oxygen to form a network former capable of being easily connected to a network of oxide glass is formed. The single crystalline seed is epitaxially grown to form a single crystalline structure.

Abstract: A method of forming a fin field effect transistor on a semiconductor substrate includes forming an active region in the substrate, forming an epitaxial layer on the active region, and removing a portion of the epitaxial layer to form a vertical fin on the active region. The fin has a width that is narrower than a width of the active region. Removing a portion of the epitaxial layer may include oxidizing a surface of the epitaxial layer and then removing the oxidized surface of the epitaxial layer to decrease the width of the fin. The epitaxial layer may be doped in situ before removing a portion of the epitaxial layer. The method further includes forming a conductive layer on a top surface and on sidewalls of the fin. Related transistors are also discussed.

Abstract: A stacked semiconductor device and a method for manufacturing the stacked semiconductor device are disclosed. The stacked semiconductor device comprises a seed layer doped with first impurities, a multilayer insulation pattern disposed on the seed layer comprising at least two insulation interlayer patterns stacked vertically on the seed layer and an opening. The stacked semiconductor device further comprises at least one active thin layer, wherein each of the at least one active thin layers is disposed on one of the at least two insulation interlayer patterns of the multilayer insulation pattern, and wherein the opening exposes a side surface of each of the at least one active thin layers. The stacked semiconductor device still further comprises and a first plug disposed on the seed layer and doped with second impurities substantially the same as the first impurities, wherein the opening exposes a top surface of the first plug.

Abstract: Integrated circuit field effect transistors include an integrated circuit substrate and a fin that projects away from the integrated circuit substrate, extends along the integrated circuit substrate, and includes a top that is remote from the integrated circuit substrate. A channel region is provided in the fin that is doped a conductivity type and has a higher doping concentration of the conductivity type adjacent the top than remote from the top. A source region and a drain region are provided in the fin on opposite sides of the channel region, and an insulated gate electrode extends across the fin adjacent the channel region.

Abstract: A method of fabricating a transistor device includes forming a non-crystalline germanium layer on a seed layer. The non-crystalline germanium layer is selectively locally heated to about a melting point thereof to form a single-crystalline germanium layer on the seed layer. The non-crystalline germanium layer may be selectively locally heated, for example, by applying a laser to a portion of the non-crystalline germanium layer. Related devices are also discussed.

Abstract: Provided are improved methods for forming silicon films, particularly single-crystal silicon films from amorphous silicon films in which a single-crystal silicon substrate is prepared by removing any native oxide, typically using an aqueous HF solution, and placed in a reaction chamber. The substrate is then heated from about 350° C. to a first deposition temperature under a first ambient to induce single-crystal epitaxial silicon deposition primarily on exposed silicon surfaces. The substrate is then heated to a second deposition temperature under a second ambient that will maintain the single-crystal epitaxial silicon deposition on exposed single-crystal silicon while inducing amorphous epitaxial silicon deposition on insulating surfaces. The amorphous epitaxial silicon can then be converted to single-crystal silicon using a solid phase epitaxy process to form a thin, high quality silicon layer.

Abstract: Disclosed is a semiconductor fin construction useful in FinFET devices that incorporates an upper region and a lower region with wherein the upper region is formed with substantially vertical sidewalls and the lower region is formed with inclined sidewalls to produce a wider base portion. The disclosed semiconductor fin construction will also typically include a horizontal step region at the interface between the upper region and the lower region. Also disclosed are a series of methods of manufacturing semiconductor devices incorporating semiconductor fins having this dual construction and incorporating various combinations of insulating materials such as silicon dioxide and/or silicon nitride for forming shallow trench isolation (STI) structures between adjacent semiconductor fins.

Abstract: Integrated circuit field effect transistors include an integrated circuit substrate and a fin that projects away from the integrated circuit substrate, extends along the integrated circuit substrate, and includes a top that is remote from the integrated circuit substrate. A channel region is provided in the fin that is doped a conductivity type and has a higher doping concentration of the conductivity type adjacent the top than remote from the top. A source region and a drain region are provided in the fin on opposite sides of the channel region, and an insulated gate electrode extends across the fin adjacent the channel region. Related fabrication methods also are described.

Abstract: An integrated circuit device includes a gate electrode formed on an active region of an integrated circuit device and on a field isolation layer adjacent to the active region. A source region and a drain region are in the active region on alternate sides of the gate electrode. At least one buried insulation layer is beneath the drain region or the source region.

Abstract: A method of forming an integrated circuit can be provided by successively laterally forming single crystalline thin film regions from an amorphous thin film using a lower single crystalline seed layer.

Abstract: A field effect transistor includes a vertical fin-shaped semiconductor active region having an upper surface and a pair of opposing sidewalls on a substrate, and an insulated gate electrode on the upper surface and opposing sidewalls of the fin-shaped active region. The insulated gate electrode includes a capping gate insulation layer having a thickness sufficient to preclude formation of an inversion-layer channel along the upper surface of the fin-shaped active region when the transistor is disposed in a forward on-state mode of operation. Related fabrication methods are also discussed.

Abstract: An integrated circuit device includes a gate electrode formed on an active region of an integrated circuit device and on a field isolation layer adjacent to the active region. A source region and a drain region are in the active region on alternate sides of the gate electrode. At least one buried insulation layer is beneath the drain region or the source region.

Abstract: A method of forming a thin layer including providing a first single-crystalline silicon layer partially exposed through an opening in an insulation pattern and forming an epitaxial layer on the first single-crystalline silicon layer and forming an amorphous silicon layer on the insulation pattern, the amorphous silicon layer having a first portion adjacent the epitaxial layer and a second portion spaced apart from the first portion, wherein the amorphous silicon layer is formed on the insulation pattern at substantially the same rate at the first portion and at a second portion. The amorphous silicon layer may be formed to a uniform thickness without a thinning defect.

Abstract: A method of forming a fin field effect transistor on a semiconductor substrate includes forming a vertical fin protruding from the substrate. A buffer oxide liner is formed on a top surface and on sidewalls of the fin. A trench is then formed on the substrate, where at least a portion of the fin protrudes from a bottom surface of the trench. The trench may be formed by forming a dummy gate on at least a portion of the fin, forming an insulation layer on the fin surrounding the dummy gate, and then removing the dummy gate to expose the at least a portion of the fin, such that the trench is surrounded by the insulation layer. The buffer oxide liner is then removed from the protruding portion of the fin, and a gate is formed in the trench on the protruding portion of the fin.