摘要:
Techniques and circuitry are disclosed for implementing non-volatile storage that exploit bias temperature instability (BTI) effects of high-k/metal-gate n-type or p-type metal oxide semiconductor (NMOS or PMOS) transistors. A programmed bitcell of, for example, a memory or programmable logic circuit exhibits a threshold voltage shift resulting from an applied programming bias used to program bitcells. In some cases, applying a first programming bias causes the device to have a first state, and applying a second programming bias causes the device to have a second state that is different than the first state. Programmed bitcells can be erased by applying an opposite polarity stress, and re-programmed through multiple cycles. The bitcell configuration can be used in conjunction with column/row select circuitry and/or readout circuitry, in accordance with some embodiments.
摘要:
Methods and associated structures of forming a microelectronic device are described. Those methods may include implanting an exposed p type silicon portion of a substrate with a carbon species, wherein endcap regions of a blocked salicide resistor and a p type structure that are both disposed on the exposed p type silicon portion of the substrate are implanted with the carbon species.
摘要:
A semiconductor device is described having an integrated high-k dielectric layer and metal control gate. A method of fabricating the same is described. Embodiments of the semiconductor device include a high-k dielectric layer disposed on a floating gate. The high-k dielectric layer defines a recess. A metal control gate is formed in the recess.
摘要:
In general, in one aspect, a method includes forming a semiconductor substrate having an N+ diffusion region, a shallow trench isolation (STI) region adjacent to the N+ diffusion region, and a blocked salicide poly resistor (BSR) region over the STI region. An oxide layer is over the substrate. A nitride layer is formed over the oxide layer and is annealed. A resist layer is patterned on the annealed nitride layer, wherein the resist layer covers a portion of the BSR region. The annealed nitride layer is etched using the resist layer as a pattern. The resist layer is removed and the oxide layer is etched using the annealed nitride layer as a pattern. Germanium pre-amorphization is implanted into the substrate, wherein the oxide and the annealed nitride layers protect a portion of the BSR region from the implanting.
摘要:
Microelectronic structures embodying the present invention include a field effect transistor (FET) having highly conductive source/drain extensions. Formation of such highly conductive source/drain extensions includes forming a passivated recess which is back filled by epitaxial deposition of doped material to form the source/drain junctions. The recesses include a laterally extending region that underlies a portion of the gate structure. Such a lateral extension may underlie a sidewall spacer adjacent to the vertical sidewalls of the gate electrode, or may extend further into the channel portion of a FET such that the lateral recess underlies the gate electrode portion of the gate structure. In one embodiment the recess is back filled by an in-situ epitaxial deposition of a bilayer of oppositely doped material. In this way, a very abrupt junction is achieved that provides a relatively low resistance source/drain extension and further provides good off-state subthreshold leakage characteristics. Alternative embodiments can be implemented with a back filled recess of a single conductivity type.
摘要:
A method and device for improved salicide resistance in polysilicon gates under 0.20 μm. The several embodiments of the invention provide for formation of gate electrode structures with recessed and partially recessed spacers. One embodiment, provides a gate electrode structure with recessed thick inner spacers and thick outer spacers. Another embodiment provides a gate electrode structure with recessed thin inner spacers and recessed thick outer spacers. Another embodiment provides a gate electrode structure with thin inner spacers and partially recessed outer spacers. Another embodiment provides a gate electrode structure with two spacer stacks. The outermost spacer stack with recessed thin inner spacers and recessed thick outer spacers. The inner spacer stack within inner spacers and thin outer spacers. Another embodiment provides a gate electrode structure with two spacer stacks. The outermost spacer stack with recessed thin inner spacers and recessed thick outer spacers. The inner spacer stack with recessed thin inner spacers and recessed thin outer spacers.
摘要:
A semiconductor device having a novel spacer structure and method of fabrication. The present invention describes a semiconductor device which has an electrode with a first thickness. A silicide layer having a second thickness is formed on the electrode. A sidewall spacer which is formed adjacent to the electrode has a height which is greater than the sum of the thickness of the electrode and the thickness of the silicide layer.
摘要:
The several embodiments of the invention provide for formation of gate electrode structures with recessed and partially recessed spacers. One embodiment, provides a gate electrode structure with recessed thick inner spacers and thick outer spacers. Another embodiment provides a gate electrode structure with recessed thin inner spacers and recessed thick outer spacers. Another embodiment provides a gate electrode structure with thin inner spacers and partially recessed outer spacers. Another embodiment provides a gate electrode structure with two spacer stacks. The outermost spacer stack with recessed thin inner spacers and recessed thick outer spacers. The inner spacer stack with thin inner spacers and thin outer spacers. Another embodiment provides a gate electrode structure with two spacer stacks. The outermost spacer stack with recessed thin inner spacers and recessed thick outer spacers. The inner spacer stack with recessed thin inner spacers and recessed thin outer spacers.
摘要:
A semiconductor device having a novel spacer structure and method of fabrication. The present invention describes a semiconductor device which has an electrode with a first thickness. A silicide layer having a second thickness is formed on the electrode. A sidewall spacer which is formed adjacent to the electrode has a height which is greater than the sum of the thickness of the electrode and the thickness of the silicide layer.
摘要:
A method and device for improved salicide resistance in polysilicon gates under 0.20 &mgr;m. The several embodiments of the invention provide for formation of gate electrode structures with recessed and partially recessed spacers. One embodiment, provides a gate electrode structure with recessed thick inner spacers and thick outer spacers. Another embodiment provides a gate electrode structure with recessed thin inner spacers and recessed thick outer spacers. Another embodiment provides a gate electrode structure with thin inner spacers and partially recessed outer spacers. Another embodiment provides a gate electrode structure with two spacer stacks. The outermost spacer stack with recessed thin inner spacers and recessed thick outer spacers. The inner spacer stack with thin inner spacers and thin outer spacers. Another embodiment provides a gate electrode structure with two spacer stacks. The outermost spacer stack with recessed thin inner spacers and recessed thick outer spacers. The inner spacer stack with recessed thin inner spacers and recessed thin outer spacers.