摘要:
In one aspect, a method of fabricating a semiconductor device is provided. The method includes forming at least one capping layer over epitaxial source/drain regions of a PMOS device, forming a stress memorization (SM) layer over the PMOS device including the at least one capping layer and over an adjacent NMOS device, and treating the SM layer formed over the NMOS and PMOS devices to induce tensile stress in a channel region of the NMOS device.
摘要:
A semiconductor device having a field effect transistor according to example embodiments may include a first semiconductor pattern disposed to fill a first recess region and a second semiconductor pattern disposed to fill a second recess region. The first recess region may be shallower than the second recess region and may be disposed adjacent to a channel region. Thus, sufficient stress may be supplied to the channel region to increase the mobility of holes or carriers in a channel and enhance a punchthrough characteristic.
摘要:
Methods of fabricating semiconductor devices having a carbon-containing metal silicide layer and semiconductor devices fabricated by the methods are provided. A representative method includes the steps of preparing a semiconductor substrate and forming a gate electrode and source/drain regions on the semiconductor substrate, such that the gate electrode has a first metal silicide layer on an upper part thereof which contains carbon and the source/drain regions have second metal silicide layers on their substantially carbon-free upper parts.
摘要:
Methods of fabricating semiconductor devices having a carbon-containing metal silicide layer and semiconductor devices fabricated by the methods are provided. A representative method includes the steps of preparing a semiconductor substrate and forming a gate electrode and source/drain regions on the semiconductor substrate, such that the gate electrode has a first metal silicide layer on an upper part thereof which contains carbon and the source/drain regions have second metal silicide layers on their substantially carbon-free upper parts.
摘要:
Methods of fabricating a semiconductor device are provided, the methods include forming a gate stack on a substrate, forming an insulation layer on the substrate to cover the gate stack, forming a spacer at both side walls of the gate stack by etching the insulation layer, and ion implanting impurities in the spacer or the insulation layer.
摘要:
A semiconductor device with improved transistor operating and flicker noise characteristics includes a substrate, an analog NMOS transistor and a compressively-strained-channel analog PMOS transistor disposed on the substrate. The device also includes a first etch stop liner (ESL) and a second ESL which respectively cover the NMOS transistor and the PMOS transistor. The relative measurement of flicker noise power of the NMOS and PMOS transistors to flicker noise power of reference unstrained-channel analog NMOS and PMOS transistors at a frequency of 500 Hz is less than 1.
摘要:
A semiconductor device with improved transistor operating and flicker noise characteristics includes a substrate, an analog NMOS transistor and a compressively-strained-channel analog PMOS transistor disposed on the substrate. The device also includes a first etch stop liner (ESL) and a second ESL which respectively cover the NMOS transistor and the PMOS transistor. The relative measurement of flicker noise power of the NMOS and PMOS transistors to flicker noise power of reference unstrained-channel analog NMOS and PMOS transistors at a frequency of 500 Hz is less than 1.
摘要:
A semiconductor device and method of manufacturing the semiconductor device are provided. The semiconductor device may include a semiconductor substrate, a gate insulation layer and a gate electrode, a first spacer, a second spacer, an epitaxial pattern, and/or source/drain regions. The gate insulation layer and the gate electrode may be formed on the semiconductor substrate. The first spacer may be formed on sidewalls of the gate electrode. The second spacer may be formed on sidewalls of the first spacer. The epitaxial pattern may be formed between the second spacer and the semiconductor substrate such that an outside profile of the epitaxial pattern is aligned with an outside profile of the second spacer. The source/drain regions may include primary source/drain regions that are aligned with the first spacer. The primary source/drain regions may be formed in the epitaxial pattern and the semiconductor substrate. The source/drain regions may also include secondary source/drain regions that are aligned with the second spacer and formed in the semiconductor substrate.
摘要:
In a method of fabricating a CMOS transistor, and a CMOS transistor fabricated according to the method, the characteristics of first and second conductivity type MOS transistors are both simultaneously improved. At the same time, the fabrication process is simplified by reducing the number of masks required. The method includes amorphizing the active region of only the second conductivity type MOS transistor, and performing selective etching to form a first recessed region of a first depth in the active region of the first conductivity type MOS transistor and a second recessed region of a second depth that is greater than the first depth in the active region of the second conductivity type MOS transistor. Selective epitaxial growth is performed in the first and second recessed regions to form an elevated epitaxial layer that fills the first recessed region and extends to a level that is above the upper surface of the semiconductor substrate and to form a recessed epitaxial layer that fills the second recessed region.
摘要:
A semiconductor device includes a substrate having a semiconductor channel region therein. A gate electrode is provided on the channel region. A SiGeC stress-inducing region is provided adjacent the channel region. The SiGeC region is configured to form a semiconductor junction with the channel region and induce a net mobility-enhancing stress in a portion of the channel region. The SiGeC region may have a Ge/C atomic ratio of less than about 12. The SiGeC region also has a sufficient concentration of substitutional C atoms therein to induce a net tensile stress in the portion of the channel region, which has a different lattice constant relative to the SiGeC region.