摘要:
According to one embodiment of the invention, a method for manufacturing a bipolar junction transistor includes implanting a first base dopant in a semiconductor substrate, forming an epitaxial layer outwardly from the semiconductor substrate, and forming a dielectric layer outwardly from the epitaxial layer. The method also includes etching a first portion of the dielectric layer to form an emitter region, forming an emitter polysilicon layer on the semiconductor substrate, and implanting an emitter dopant in the emitter polysilicon layer. The method further includes etching a portion of the emitter polysilicon layer and a second portion of the dielectric layer to form an emitter polysilicon region having sidewalls, forming nitride regions on the sidewalls, and implanting a second base dopant in the semiconductor substrate. After implanting the second base dopant, an annealing process is performed for the semiconductor substrate to form an emitter and a base.
摘要:
A semiconductor device and a method for constructing a semiconductor device is disclosed. A deep trench isolation structure (108) is formed proximate a surface of a semiconductor substrate (106). A deep trench plug (122) layer is deposited within the deep trench isolation structure (108). A shallow trench isolation structure (130) is formed where the deep trench isolation structure (108) meets the surface of the semiconductor substrate (106). A shallow trench plug layer (133) is deposited within the shallow trench isolation structure (130).
摘要:
The instant invention describes a programmable neuron MOSFET structure formed on SOI substrates. A number of input capacitor structures (241, 231) are formed on a SOI substrate. The substrate region of the capacitors (330, 340) are completely isolated from each other by isolation structures (270). In addition the transistor structure (210) of the neuron MOSFET is completely isolated from the capacitor structures (241, 231) by the isolation structure (270). The neuron MOSFET also comprises a contiguous floating conductive layer (200, 230, and 240) which forms the gate structure of the capacitors (230, 240) and the floating gate (200) of the transistor structure.
摘要:
The present invention is a method for forming super steep doping profiles in MOS transistor structures. The method comprises forming a carbon containing layer (110) beneath the gate dielectric (50) and source and drain regions (80) of a MOS transistor. The carbon containing layer (110) will prevent the diffusion of dopants into the region (40) directly beneath the gate dielectric layer (50).
摘要:
The present invention is a method for forming super steep doping profiles in MOS transistor structures. The method comprises forming a carbon containing layer (110) beneath the gate dielectric (50) and source and drain regions (80) of a MOS transistor. The carbon containing layer (110) will prevent the diffusion of dopants into the region (40) directly beneath the gate dielectric layer (50).
摘要:
A heterojunction bipolar transistor (30) in a silicon-on-insulator (SOI) structure is disclosed. The transistor collector (28), heterojunction base region (20), and intrinsic emitter region (25) are formed in the thin film silicon layer (6) overlying the buried insulator layer (4). A base electrode (10) is formed of polysilicon, and has a polysilicon filament (10f) that extends over the edge of an insulator layer (8) to contact the silicon layer (6). After formation of insulator filaments (12) along the edges of the base electrode (10) and insulator layer (8), the thin film silicon layer (6) is etched through, exposing an edge. An angled ion implantation then implants the heterojunction species, for example germanium and carbon, into the exposed edge of the thin film silicon layer (6), which after anneal forms the heterojunction base region (20). Polysilicon plugs for the emitter (24e) and collector (24c) are then formed, from which dopant diffuses to form the intrinsic emitter (25) and subcollector (22) of the device.
摘要:
A semiconductor device (100) and a method for constructing a semiconductor device (100) are disclosed. A trench isolation structure (112) and an active region (110) are formed proximate an outer surface of a semiconductor layer (108). An epitaxial layer (111) is deposited outwardly from the trench isolation structure (112). A first insulator layer (116) and a second insulator layer (118) are grown proximate to the epitaxial layer (111). A gate stack (123) that includes portions of the first insulator layer (116 and the second insulator layer (118) is formed outwardly from the epitaxial layer (111). The gate stack (123) also includes a gate (122) with a narrow region (130) and a wide region (132) formed proximate the second insulator layer (118. The epitaxial layer (111) is heated to a temperature sufficient to allow for the epitaxial layer (111) to form a source/drain implant region (126) in the active region (110).
摘要:
A semiconductor device (100) and a method for constructing a semiconductor device (100) are disclosed. A trench isolation structure (112) and an active region (110) are formed proximate an outer surface of a semiconductor layer (108). An epitaxial layer (111) is deposited outwardly from the trench isolation structure (112). A first insulator layer (116) and a second insulator layer (118) are grown proximate to the epitaxial layer (111). A gate stack (123) that includes portions of the first insulator layer (116 and the second insulator layer (118) is formed outwardly from the epitaxial layer (111). The gate stack (123) also includes a gate (122) with a narrow region (130) and a wide region (132) formed proximate the second insulator layer (118. The epitaxial layer (111) is heated to a temperature sufficient to allow for the epitaxial layer (111) to form a source/drain implant region (126) in the active region (110).
摘要:
A method for semiconductor processing provides a DSB semiconductor body having a first crystal orientation, a second crystal orientation, and a border region disposed between the first and second crystal orientations. The border region further has a defect associated with an interface of the first crystal orientation and second the second crystal orientation, wherein the defect generally extends a distance into the semiconductor body from a surface of the body. A sacrificial portion of the semiconductor body is removed from the surface thereof, wherein removing the sacrificial portion at least partially removes the defect. The sacrificial portion can be defined by oxidizing the surface at low temperature, wherein the oxidation at least partially consumes the defect. The sacrificial portion can also be removed by CMP. An STI feature may be further formed over the defect after removal of the sacrificial portion, therein consuming any remaining defect.
摘要:
A method for reducing defects at an interface between a amorphized, recrystallized cleaved wafer layer and an unamorphized cleaved wafer layer can comprise an anneal and an exposure to hydrochloric acid. The anneal and acid exposure can be performed within an epitaxial reactor chamber to minimize wafer transport.