摘要:
A strained semiconductor material may be positioned in close proximity to the channel region of a transistor, such as an SOI transistor, while reducing or avoiding undue relaxation effects of metal silicides and extension implantations, thereby providing enhanced efficiency for the strain generation.
摘要:
By removing a portion of a halo region or by avoiding the formation of the halo region within the extension region, which may be subsequently formed on the basis of a re-grown semiconductor material, the threshold roll off behavior may be significantly improved, wherein an enhanced current drive capability may simultaneously be achieved.
摘要:
By combining a plurality of stress inducing mechanisms in each of different types of transistors, a significant performance gain may be obtained, thereby providing enhanced flexibility in adjusting product specific characteristics. For this purpose, sidewall spacers with high tensile stress may be commonly formed on PMOS and NMOS transistors, wherein a deleterious effect on the PMOS transistor may be compensated for by a corresponding compressively stressed contact etch stop layer, while the NMOS transistor comprises a contact etch stop layer with tensile stress. Furthermore, the PMOS transistor comprises an embedded strained semiconductor layer for efficiently creating compressive strain in the channel region.
摘要:
By combining a plurality of stress inducing mechanisms in each of different types of transistors, a significant performance gain may be obtained, thereby providing enhanced flexibility in adjusting product specific characteristics. For this purpose, sidewall spacers with high tensile stress may be commonly formed on PMOS and NMOS transistors, wherein a deleterious effect on the PMOS transistor may be compensated for by a corresponding compressively stressed contact etch stop layer, while the NMOS transistor comprises a contact etch stop layer with tensile stress. Furthermore, the PMOS transistor comprises an embedded strained semiconductor layer for efficiently creating compressive strain in the channel region.
摘要:
By recessing drain and source regions, a highly stressed layer, such as a contact etch stop layer, may be formed in the recess in order to enhance the strain generation in the adjacent channel region of a field effect transistor. Moreover, a strained semiconductor material may be positioned in close proximity to the channel region by reducing or avoiding undue relaxation effects of metal silicides, thereby also providing enhanced efficiency for the strain generation. In some aspects, both effects may be combined to obtain an even more efficient strain-inducing mechanism.
摘要:
A method of forming a field effect transistor comprises providing a substrate comprising a biaxially strained layer of a semiconductor material. A gate electrode is formed on the biaxially strained layer of semiconductor material. A raised source region and a raised drain region are formed adjacent the gate electrode. Ions of a dopant material are implanted into the raised source region and the raised drain region to form an extended source region and an extended drain region. Moreover, in methods of forming a field effect transistor according to embodiments of the present invention, a gate electrode can be formed in a recess of a layer of semiconductor material. Thus, a field effect transistor wherein a source side channel contact region and a drain side channel contact region located adjacent a channel region are subject to biaxial strain can be obtained.
摘要:
By forming a deep recess through the buried insulating layer and re-growing a strained semiconductor material, an enhanced strain generation mechanism may be provided in SOI-like transistors. Consequently, the strain may also be efficiently created by the embedded strained semiconductor material across the entire active layer, thereby significantly enhancing the performance of transistor devices, in which two channel regions may be defined.
摘要:
A method of forming a field effect transistor comprises providing a substrate comprising a biaxially strained layer of a semiconductor material. A gate electrode is formed on the biaxially strained layer of semiconductor material. A raised source region and a raised drain region are formed adjacent the gate electrode. Ions of a dopant material are implanted into the raised source region and the raised drain region to form an extended source region and an extended drain region. Moreover, in methods of forming a field effect transistor according to embodiments of the present invention, a gate electrode can be formed in a recess of a layer of semiconductor material. Thus, a field effect transistor wherein a source side channel contact region and a drain side channel contact region located adjacent a channel region are subject to biaxial strain can be obtained.
摘要:
A method of forming a field effect transistor comprises providing a substrate comprising a biaxially strained layer of a semiconductor material. A gate electrode is formed on the biaxially strained layer of semiconductor material. A raised source region and a raised drain region are formed adjacent the gate electrode. Ions of a dopant material are implanted into the raised source region and the raised drain region to form an extended source region and an extended drain region. Moreover, in methods of forming a field effect transistor according to embodiments of the present invention, a gate electrode can be formed in a recess of a layer of semiconductor material. Thus, a field effect transistor wherein a source side channel contact region and a drain side channel contact region located adjacent a channel region are subject to biaxial strain can be obtained.
摘要:
By recessing drain and source regions, a highly stressed layer, such as a contact etch stop layer, may be formed in the recess in order to enhance the strain generation in the adjacent channel region of a field effect transistor. Moreover, a strained semiconductor material may be positioned in close proximity to the channel region by reducing or avoiding undue relaxation effects of metal silicides, thereby also providing enhanced efficiency for the strain generation. In some aspects, both effects may be combined to obtain an even more efficient strain-inducing mechanism.