Abstract:
A method for forming a semiconductor device includes defining a sacrificial layer (108) over a single crystalline substrate (106). The sacrificial layer (108) is implanted with a dopant species in a manner that prevents the single crystalline substrate (106) from becoming substantially amorphized. The sacrificial layer (108) is annealed so as to drive said dopant species from said sacrificial layer (108) into said single crystalline substrate (106).
Abstract:
The present invention provides a strained-Si structure, in which the nFET regions of the structure are strained in tension and the pFET regions of the structure are strained in compression. Broadly the strained-Si structure comprises a substrate; a first layered stack atop the substrate, the first layered stack comprising a compressive dielectric layer atop the substrate and a first semiconducting layer atop the compressive dielectric layer, wherein the compressive dielectric layer transfers tensile stresses to the first semiconducting layer, and a second layered stack atop the substrate, the second layered stack comprising an tensile dielectric layer atop the substrate and a second semiconducting layer atop the tensile dielectric layer, wherein the tensile dielectric layer transfers compressive stresses to the second semiconducting layer. The tensile dielectric layer and the compressive dielectric layer preferably comprise nitride, such as Si3N4.
Abstract:
A semiconductor structure and method of manufacturing is provided. The method of manufacturing includes forming shallow trench isolation (STI) (25) in a substrate and providing a first material (30) and a second material (40) on the substrate. The first material (30) and the second material (40) are mixed into the substrate by a thermal anneal process to form a first island (50) and second island (55) at an nFET region and a pFET region, respectively. A layer of different material is formed on the first island (50) and the second island (55). The STI relaxes and facilitates the relaxation of the first island (50) and the second island (55). The first material (30) may be deposited or grown Ge material and the second material (40) may deposited or grown Si:C or C. A strained Si layer is formed on at least one of the first island (50) and the second island (55).
Abstract:
Disclosed is a method of protecting a semiconductor shallow trench isolation (STI) oxide from etching, the method comprising lowering, if necessary, the upper suface of said STI oxide to a level below that of adjacent silicon active areas, depositing a nitride liner upon said STI oxide and adjacent silicon active areas in a manner effective in defining a depression above said STI oxide, filling said depression with a protective film, and removing said nitride layer from said adjacent active areas.
Abstract:
The present invention provides a strained-Si structure, in which the nFET regions of the structure are strained in tension and the pFET regions of the structure are strained in compression. Broadly the strained-Si structure comprises a substrate; a first layered stack atop the substrate, the first layered stack comprising a compressive dielectric layer atop the substrate and a first semiconducting layer atop the compressive dielectric layer, wherein the compressive dielectric layer transfers tensile stresses to the first semiconducting layer, and a second layered stack atop the substrate, the second layered stack comprising an tensile dielectric layer atop the substrate and a second semiconducting layer atop the tensile dielectric layer, wherein the tensile dielectric layer transfers compressive stresses to the second semiconducting layer. The tensile dielectric layer and the compressive dielectric layer preferably comprise nitride, such as Si 3 N 4 .
Abstract translation:本发明提供一种应变Si结构,其中该结构的nFET区域被拉紧并且该结构的pFET区域被压缩而变形。 广义上,应变Si结构包括基底; 所述第一层叠堆叠包括位于所述衬底顶部的压缩介电层和位于所述压缩介电层顶部的第一半导体层,其中所述压缩介电层将拉伸应力传递到所述第一半导体层,以及第二层叠堆叠 所述第二层叠堆叠包括位于所述衬底顶部的拉伸电介质层和位于所述拉伸介电层顶部的第二半导体层,其中所述拉伸介电层将压缩应力传递到所述第二半导体层。 拉伸介电层和压电介电层优选包括氮化物,例如Si 3 N 4 N 4。
Abstract:
A low-GIRL current MOSFET device (90) structure and a method of fabrication thereof which provides a low-GIRL current. The MOSFET device structure contains a central gate conductor (10) whose edges may slightly overlap the source/drain diffusions (88, 88), and left and right side wing gate conductors (70,70) which are separated from the central gate conductor by a thin insulating and diffusion barrier layer (50, 52).
Abstract:
PROBLEM TO BE SOLVED: To provide a method for protecting shallow trench isolation (STI) during an oxide etching process. SOLUTION: This method for protecting the semiconductor shallow trench isolation (STI) oxide 4 from the etching comprises: a step of, if necessary, making the top face of the STI oxide 4 lower than the top face of an adjacent silicon activated region 3; a step of depositing a nitride liner 5 on the STI oxide 4 and the adjacent silicon activated region 3 by a method effective for delimiting a concave portion above the STI oxide 4; a step of filling the concave portion with a protecting film 6; and a step of removing the nitride liner from the adjacent activated region. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method of manufacturing a double-gate type field effect transistor (DGFET) of a self-aligning planar type with a front gate and a back gate aligned. SOLUTION: A method of manufacturing this double-gate type field effect transistor (DGFET) comprises: a process of preparing a stacked double-gate structure provided with at least a back gate 14, a back gate dielectric provided on the back gate 14, a channel layer provided on the back gate dielectric, a front gate dielectric provided on the channel layer, and a front gate 22 provided on the front gate dielectric; a process of patterning the front gate 22 of the stacked double-gate structure; a process of forming a sidewall spacer on the exposed sidewall of the pattered front gate 22; and a process of forming a carrier depletion zone at a part of the back gate and allowing the carrier depletion zone to align the back gate to the front gate. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a method of preserving shallow trench isolation (STI) during an oxide-etching process. SOLUTION: The method of protecting the semiconductor shallow trench isolation (STI) oxide from etching includes steps of: lowering, if necessary, the upper surface of the STI oxide to a level below that of adjacent silicon active areas; depositing a nitride liner upon the STI oxide and adjacent silicon active areas in a manner effective in defining a depression above the STI oxide; filling the depression with a protective film; and removing the nitride liner from the adjacent active areas. COPYRIGHT: (C)2009,JPO&INPIT