Abstract: A semiconductor device and process of fabricating the same, the semiconductor device including a semiconductor substrate, a gate insulating layer on the semiconductor substrate, a gate electrode having sidewalls, on the gate insulating layer, first spacers on the sidewalls of the gate electrode, a source/drain region in the semiconductor substrate, aligned with the sidewalls, a silicide layer on the gate electrode, a silicide layer on the source/drain region, and second spacers covering the first spacers and end parts of a surface of the silicide layer on the source drain region.

Abstract: A semiconductor device and process of fabricating the same, the semiconductor device including a semiconductor substrate, a gate insulating layer on the semiconductor substrate, a gate electrode having sidewalls, on the gate insulating layer, first spacers on the sidewalls of the gate electrode, a source/drain region in the semiconductor substrate, aligned with the sidewalls, a silicide layer on the gate electrode, a silicide layer on the source/drain region, and second spacers covering the first spacers and end parts of a surface of the silicide layer on the source drain region.

Abstract: A method of fabricating an integrated circuit device includes forming first and second gate patterns on surfaces of a semiconductor substrate in PMOS and NMOS regions, respectively, of the substrate. P-type source/drain regions are epitaxially grown on opposite sides of the first gate pattern in the PMOS region to exert compressive stress on a first channel region therebetween adjacent the first gate pattern. N-type source/drain regions are epitaxially grown on opposite sides of the second gate pattern in the NMOS region to exert tensile stress on a second channel region therebetween adjacent the second gate pattern. Related devices are also discussed.

Abstract: Isolation regions are formed on a substrate to define an active region. A gate electrode is formed on the active region. A spacer structure is formed on a sidewall of the gate electrode. A gate silicide layer is formed on the gate electrode and a source/drain silicide layer is formed on the active region adjacent to the gate electrode. An upper portion of the gate silicide layer and a portion of the spacer structure are simultaneously removed to form a spacer structure pattern and a gate silicide layer pattern. A stress layer is formed to cover the gate electrode and spacer structure pattern.

Abstract: Provided is a method of fabricating a semiconductor device including a dual silicide process. The method may include sequentially siliciding and stressing a first MOS region, and sequentially siliciding and stressing a second MOS region after siliciding and stressing the first MOS region, the second MOS region being a different type than the first MOS region.

Abstract: In a method of manufacturing a transistor and a method of manufacturing a semiconductor device using the same, the method may include forming a preliminary metal silicide pattern on a single-crystalline silicon substrate and on a polysilicon pattern, and partially etching the preliminary metal silicide pattern to form a first metal silicide pattern on the substrate and a second metal silicide pattern on the polysilicon pattern, the second metal silicide pattern having a line width the same as or smaller than that of the polysilicon pattern. The method may include the transistor having no metal silicide residue on the spacer. Accordingly, an operation failure due to the residue may be prevented or reduced.

Abstract: A method of fabricating an integrated circuit device includes forming first and second gate patterns on surfaces of a semiconductor substrate in PMOS and NMOS regions, respectively, of the substrate. P-type source/drain regions are epitaxially grown on opposite sides of the first gate pattern in the PMOS region to exert compressive stress on a first channel region therebetween adjacent the first gate pattern. N-type source/drain regions are epitaxially grown on opposite sides of the second gate pattern in the NMOS region to exert tensile stress on a second channel region therebetween adjacent the second gate pattern. Related devices are also discussed.

Abstract: Provided is a method of fabricating a semiconductor device including a dual suicide process. The method may include sequentially siliciding and stressing a first MOS region, and sequentially siliciding and stressing a second MOS region after siliciding and stressing the first MOS region, the second MOS region being a different type than the first MOS region.

Abstract: A semiconductor device and process of fabricating the same, the semiconductor device including a semiconductor substrate, a gate insulating layer on the semiconductor substrate, a gate electrode having sidewalls, on the gate insulating layer, first spacers on the sidewalls of the gate electrode, a source/drain region in the semiconductor substrate, aligned with the sidewalls, a silicide layer on the gate electrode, a silicide layer on the source/drain region, and second spacers covering the first spacers and end parts of a surface of the silicide layer on the source drain region.

Abstract: Isolation regions are formed on a substrate to define an active region. A gate electrode is formed on the active region. A spacer structure is formed on a sidewall of the gate electrode. A gate silicide layer is formed on the gate electrode and a source/drain silicide layer is formed on the active region adjacent to the gate electrode. An upper portion of the gate silicide layer and a portion of the spacer structure are simultaneously removed to form a spacer structure pattern and a gate silicide layer pattern. A stress layer is formed to cover the gate electrode and spacer structure pattern.

Abstract: In a method of manufacturing a transistor and a method of manufacturing a semiconductor device using the same, the method may include forming a preliminary metal silicide pattern on a single-crystalline silicon substrate and on a polysilicon pattern, and partially etching the preliminary metal silicide pattern to form a first metal silicide pattern on the substrate and a second metal silicide pattern on the polysilicon pattern, the second metal silicide pattern having a line width the same as or smaller than that of the polysilicon pattern. The method may include the transistor having no metal silicide residue on the spacer. Accordingly, an operation failure due to the residue may be prevented or reduced.

Abstract: Provided are a metal oxide semiconductor (MOS) transistor and a complementary MOS (CMOS) transistor each having a strained channel epi layer, and methods of fabricating the transistors. The MOS transistor may include at least one active region defined by an isolation structure formed in a substrate. At least one channel trench may be formed in a part of the at least one active region. At least one strained channel epi layer may be in the at least one channel trench. At least one gate electrode may be aligned on the at least one strained channel epi layer. Sources/drains may be arranged in the at least one active region along both sides of the at least one strained channel epi layer.

Abstract: A method of fabricating a MOS transistor, and a MOS transistor fabricated by the method. The method can include forming a gate pattern on a semiconductor substrate. The gate pattern can be formed by sequentially stacking a gate electrode and a capping layer pattern. The capping layer pattern is formed to have a lower capping layer pattern and an upper capping layer pattern. The lower capping layer pattern is formed to a smaller width than the upper capping layer pattern.

Abstract: A method of fabricating an integrated circuit device includes forming first and second gate patterns on surfaces of a semiconductor substrate in PMOS and NMOS regions, respectively, of the substrate. P-type source/drain regions are epitaxially grown on opposite sides of the first gate pattern in the PMOS region to exert compressive stress on a first channel region therebetween adjacent the first gate pattern. N-type source/drain regions are epitaxially grown on opposite sides of the second gate pattern in the NMOS region to exert tensile stress on a second channel region therebetween adjacent the second gate pattern. Related devices are also discussed.

Abstract: A method of fabricating semiconductor devices with improved critical dimension (CD) uniformity is provided. The methods include forming photoresist patterns on an etching target layer, forming polymer layers on photoresist patterns on an etching target layer by selectively reacting a reactant gas with the photoresist patterns to provide different thicknesses of the polymer layers according to the position of the photoresist patterns, and etching the etching target layer using the photoresist patterns and the polymer layers as an etch mask.