摘要:
A transistor is formed by providing a semiconductor layer and forming a control electrode overlying the semiconductor layer. A portion of the semiconductor layer is removed lateral to the control electrode to form a first recess and a second recess on opposing sides of the control electrode. A first stressor is formed within the first recess and has a first doping profile. A second stressor is formed within the second recess and has the first doping profile. A third stressor is formed overlying the first stressor. The third stressor has a second doping profile that has a higher electrode current doping concentration than the first profile. A fourth stressor overlying the second stressor is formed and has the second doping profile. A first current electrode and a second current electrode of the transistor include at least a portion of the third stressor and the fourth stressor, respectively.
摘要:
A transistor is formed by providing a semiconductor layer and forming a control electrode overlying the semiconductor layer. A portion of the semiconductor layer is removed lateral to the control electrode to form a first recess and a second recess on opposing sides of the control electrode. A first stressor is formed within the first recess and has a first doping profile. A second stressor is formed within the second recess and has the first doping profile. A third stressor is formed overlying the first stressor. The third stressor has a second doping profile that has a higher electrode current doping concentration than the first profile. A fourth stressor overlying the second stressor is formed and has the second doping profile. A first current electrode and a second current electrode of the transistor include at least a portion of the third stressor and the fourth stressor, respectively.
摘要:
An apparatus and method for boosting output of a generator set are provided. The output of the generator set is connected to an electrical load. The apparatus includes an energy storage unit, and a power-electronic unit. The energy storage unit uses batteries and capacitors to store electric energy. The power-electronic unit measures an electrical parameter of the output of the generator set. Based on the measured electrical parameter and a predefined criterion, the power-electronic unit determines additional energy required by the electrical load. Thereafter, the power-electronic unit supplies the additional energy to the electrical load. The additional energy is drawn from the energy storage unit.
摘要:
An integrated circuit structure includes a substrate and at least one pair of complementary transistors on or in the substrate. The pair of complementary transistors comprises a first transistor and a second transistor. The structure also includes a first stress-producing layer on the first transistor and the second transistor, and a second stress-producing layer on the first stress-producing layer over the first transistor and the second transistor. The first stress-producing layer applies tensile strain force on the first transistor and the second transistor. The second stress-producing layer applies compressive strain force on the first stress-producing layer, the first transistor, and the second transistor.
摘要:
A semiconductor device structure is made on a semiconductor substrate having a semiconductor layer having isolation regions. A first gate structure is formed over a first region of the semiconductor layer, and a second gate structure is over a second region of the semiconductor layer. A first insulating layer is formed over the first and second regions. The first insulating layer can function as a mask during an etch of the semiconductor layer and can be removed selective to the isolation regions and the sidewall spacers. The first insulating layer is removed from over the first region to leave a remaining portion of the first insulating layer over the second region. The semiconductor layer is recessed in the first region adjacent to the first gate to form recesses. A semiconductor material is epitaxially grown in the recesses. The remaining portion of the first insulating layer is removed.
摘要:
A semiconductor process and apparatus includes forming channel orientation CMOS transistors (24, 34) with enhanced hole mobility in the NMOS channel region and reduced channel defectivity in the PMOS region by depositing a first tensile etch stop layer (51) over the PMOS and NMOS gate structures, etching the tensile etch stop layer (51) to form tensile sidewall spacers (62) on the exposed gate sidewalls, and then depositing a second hydrogen rich compressive or neutral etch stop layer (72) over the NMOS and PMOS gate structures (26, 36) and the tensile sidewall spacers (62). In other embodiments, a first hydrogen-rich etch stop layer (81) is deposited and etched to form sidewall spacers (92) on the exposed gate sidewalls, and then a second tensile etch stop layer (94) is deposited over the NMOS and PMOS gate structures (26, 36) and the sidewall spacers (92).
摘要:
A semiconductor fabrication process includes forming isolation structures on either side of a transistor region, forming a gate structure overlying the transistor region, removing source/drain regions to form source/drain recesses, removing portions of the isolation structures to form recessed isolation structures, and filling the source/drain recesses with a source/drain stressor such as an epitaxially formed semiconductor. A lower surface of the source/drain recess is preferably deeper than an upper surface of the recessed isolation structure by approximately 10 to 30 nm. Filling the source/drain recesses may precede or follow forming the recessed isolation structures. An ILD stressor is then deposited over the transistor region such that the ILD stressor is adjacent to sidewalls of the source/drain structure thereby coupling the ILD stressor to the source/drain stressor. The ILD stressor is preferably compressive or tensile silicon nitride and the source/drain structure is preferably silicon germanium or silicon carbon.
摘要:
A semiconductor fabrication process includes forming an etch stop layer (ESL) overlying a buried oxide (BOX) layer and an active semiconductor layer overlying the ESL. A gate electrode is formed overlying the active semiconductor layer. Source/drain regions of the active semiconductor layer are etched to expose the ESL. Source/drain stressors are formed on the ESL where the source/drain stressors strain the transistor channel. Forming the ESL may include epitaxially growing a silicon germanium ESL having a thickness of approximately 30 nm or less. Preferably a ratio of the active semiconductor layer etch rate to the ESL etch rate exceeds 10:1. A wet etch using a solution of NH4OH:H2O heated to a temperature of approximately 75° C. may be used to etch the source/drain regions. The ESL may be silicon germanium having a first percentage of germanium. The source/drain stressors may be silicon germanium having a second percentage of germanium for P-type transistors, and they may be silicon carbon for N-type transistors.
摘要:
An electronic device can include a semiconductor fin overlying an insulating layer. The electronic device can also include a semiconductor layer overlying the semiconductor fin. The semiconductor layer can have a first portion and a second portion that are spaced-apart from each other. In one aspect, the electronic device can include a conductive member that lies between and spaced-apart from the first and second portions of the semiconductor layer. The electronic device can also include a metal-semiconductor layer overlying the semiconductor layer. In another aspect, the semiconductor layer can abut the semiconductor fin and include a dopant. In a further aspect, a process of forming the electronic device can include reacting a metal-containing layer and a semiconductor layer to form a metal-semiconductor layer. In another aspect, a process can include forming a semiconductor layer, including a dopant, abutting a wall surface of a semiconductor fin.
摘要:
A semiconductor device with strain enhancement is formed by providing a semiconductor substrate and an overlying control electrode having a sidewall. An insulating layer is formed adjacent the sidewall of the control electrode. The semiconductor substrate and the control electrode are implanted to form first and second doped current electrode regions, a portion of each of the first and second doped current electrode regions being driven to underlie both the insulating layer and the control electrode in a channel region of the semiconductor device. The first and second doped current electrode regions are removed from the semiconductor substrate except for underneath the control electrode and the insulating layer to respectively form first and second trenches. An insitu doped material containing a different lattice constant relative to the semiconductor substrate is formed within the first and second trenches to function as first and second current electrodes of the semiconductor device.