Abstract:
An ULSI MOSFET formed using silicon on insulator (SOI) principles includes masking regions of an amorphous silicon film on a substrate and exposing intended active regions. Laser energy is directed against the intended active regions to anneal these regions without annealing the masked regions, thereby increasing production throughput and decreasing defect density.
Abstract:
A semiconductor-on-insulator (SOI) transistor is disclosed. The SOI transistor includes a source region, a drain region and a body region disposed therebetween, the body region including a gate disposed thereon, the source and drain regions including respective silicide regions. The body region includes a region of recombination centers formed by atom implantation, wherein atoms forming the region of recombination centers are implanted at an angle from opposite sides of the gate in a direction towards the body region, with the gate and source and drain silicide regions acting as an implant blocking mask, such that the region of recombination centers is disposed between a source/body junction and a drain/body junction. Also disclosed is a method of fabricating the SOI transistor.
Abstract:
A method of forming a CMOS structure, the method including the acts of: forming a gate structure over a substrate layer; forming a silicide layer over the substrate layer; forming shallow source/drain areas in the substrate layer; forming an oxide diffusion barrier layer over the structure; forming a metal absorption layer over the oxide diffusion barrier layer; and melting portions of the substrate layer directly overlying the shallow source/drain areas, thereby transforming the shallow source/drain areas into shallow source/drain regions. The act of melting includes the act of exposing the metal absorption layer to pulsed laser beams.
Abstract:
A transistor device formed on a semiconductor-on-insulator (SOI) substrate with a buried oxide (BOX) layer disposed thereon and an active layer disposed on the BOX layer having active regions defined by isolation trenches. The device includes a gate defining a channel interposed between a source and a drain formed within the active region of the SOI substrate. Further, the device includes a plurality of thin silicide layers formed on the source and the drain. Additionally, at least an upper silicide layer of the plurality of thin silicide layers extends beyond a lower silicide layer. Further still, the device includes a plurality of spacers used in the formation of the device. The device further includes a second plurality of thin silicide layers formed on a polysilicon electrode of the gate.
Abstract:
A MOSFET device and method of fabrication. The MOSFET includes a gate having a gate electrode and a gate dielectric formed from a high-K material, the gate dielectric separating the gate electrode and a layer of semiconductor material. A source and a drain each formed by selective in-situ doped epitaxy and located adjacent opposite sides of the gate so as to define a body region from the layer of semiconductor material between the source and the drain and under the gate.
Abstract:
A silicon-on-insulator (SOI) transistor. The SOI transistor includes a germanium implanted source and drain having a body disposed therebetween, and a gate disposed on the body, the germanium being implanted at an angle such that the source has a concentration of germanium at a source/body junction and the gate shields germanium implantation in the drain adjacent a drain/body junction resulting in a graduated drain/body junction. Also disclosed is a method of fabricating the SOI transistor.
Abstract:
A method of manufacturing an integrated circuit may include the steps of forming a deep amorphous region and doping the deep amorphous region. The doping of the deep amorphous region can form source and drain regions with extensions. After doping, the substrate is annealed. The annealing can occur at a low temperature. The deep amorphous region can be formed with a self-amorphizing implant.
Abstract:
A method of fabricating an integrated circuit with a source side compensation implant utilizes tilt-angle implants. An asymmetric channel profile is formed in which less dopants are located on a source side. The process can be utilized for P-channel or N-channel metal oxide field semiconductor effect transistors (MOSFETS).
Abstract:
An integrated circuit and method of fabricating integrated circuits is provided for an integrated circuit having threshold voltage adjustment. Unlike conventional methods and devices, threshold voltage adjustment is provided by an inert ion implantation process whereby inert ions are implanted into an underlying substrate. The implantation forms a semi-insulative layer comprised of an accumulation of inert ions. The inert ion region is formed between source and drain regions of a device on the integrated circuit. During operation of the device, the accumulation region confines the depth of the depletion layer. By confining the depth of the depletion layer, the threshold voltage of the device is reduced.
Abstract:
An ultra-large scale integrated (ULSI) circuit includes MOSFETs which have a gate conductor with dopants distributed in a box-like distribution. The dopants also achieve high electrical activation. The MOSFETs utilize gate structures with heavily doped polysilicon material or heavily doped polysilicon and germanium material. The polysilicon and polysilicon and germanium materials are manufactured by utilizing amorphous semiconductor layers. Excimer laser annealing is utilized to activate the dopants and to provide a box-like dopant profile.