摘要:
The present invention relates to complementary metal-oxide-semiconductor (CMOS) circuits that each contains at least a first and a second gate stacks. The first gate stack is located over a first device region (e.g., an n-FET device region) in a semiconductor substrate and comprises at least, from bottom to top, a gate dielectric layer, a metallic gate conductor, and a silicon-containing gate conductor. The second gate stack is located over a second device region (e.g., a p-FET device region) in the semiconductor substrate and comprises at least, from bottom to top, a gate dielectric layer and a silicon-containing gate conductor. The first and second gate stacks can be formed over the semiconductor substrate in an integrated manner by various methods of the present invention.
摘要:
The present invention relates to complementary metal-oxide-semiconductor (CMOS) circuits that each contains at least a first and a second gate stacks. The first gate stack is located over a first device region (e.g., an n-FET device region) in a semiconductor substrate and comprises at least, from bottom to top, a gate dielectric layer, a metallic gate conductor, and a silicon-containing gate conductor. The second gate stack is located over a second device region (e.g., a p-FET device region) in the semiconductor substrate and comprises at least, from bottom to top, a gate dielectric layer and a silicon-containing gate conductor. The first and second gate stacks can be formed over the semiconductor substrate in an integrated manner by various methods of the present invention.
摘要:
A method for forming a semiconductor device structure, comprising the steps of independently forming source/drain surface metal silicide layers and a fully silicided metal gate in a polysilicon gate stack. Specifically, one or more sets of spacer structures are provided along sidewalls of the polysilicon gate stack after formation of the source/drain surface metal silicide layers and before formation of the silicided metal gate, in order to prevent formation of additional metal silicide structures in the source/drain regions during the gate salicidation process. The resulting semiconductor device structure includes a fully silicide metal gate that either comprises a different metal silicide material from that in the source/drain surface metal silicide layers, or has a thickness that is larger than that of the source/drain surface metal silicide layers. The source/drain regions of the semiconductor device structure are devoid of other metal silicide structures besides the surface metal silicide layers.
摘要:
An advanced gate structure that includes a fully silicided metal gate and silicided source and drain regions in which the fully silicided metal gate has a thickness that is greater than the thickness of the silicided source/drain regions is provided. Methods of forming the advanced gate structure are also provided.
摘要:
A method for forming a semiconductor device structure, comprising the steps of independently forming source/drain surface metal silicide layers and a fully silicided metal gate in a polysilicon gate stack. Specifically, one or more sets of spacer structures are provided along sidewalls of the polysilicon gate stack after formation of the source/drain surface metal silicide layers and before formation of the silicided metal gate, in order to prevent formation of additional metal silicide structures in the source/drain regions during the gate salicidation process. The resulting semiconductor device structure includes a fully silicide metal gate that either comprises a different metal silicide material from that in the source/drain surface metal silicide layers, or has a thickness that is larger than that of the source/drain surface metal silicide layers. The source/drain regions of the semiconductor device structure are devoid of other metal silicide structures besides the surface metal silicide layers.
摘要:
An advanced gate structure that includes a fully silicided metal gate and silicided source and drain regions in which the fully silicided metal gate has a thickness that is greater than the thickness of the silicided source/drain regions is provided. Methods of forming the advanced gate structure are also provided.
摘要:
An advanced gate structure that includes a fully silicided metal gate and silicided source and drain regions in which the fully silicided metal gate has a thickness that is greater than the thickness of the silicided source/drain regions is provided. Methods of forming the advanced gate structure are also provided.
摘要:
MIM capacitors and thin film resistors are fabricated with at least one less lithographic step than the prior art methods. The process step reduction is realized by using semi-transparent metallic electrodes, fabricated with a two-mask process, which provides for direct alignment, and eliminates the need for alignment trenches in an additional layer.
摘要:
A test system having an improved physical layout and electrical design allows the 1/f noise of metal interconnects to be measured at levels close to that of Johnson or thermal noise. A detailed description of examples of operation of the test system provides evidence of the effectiveness of the test system in minimizing system noise to a level significantly lower than Johnson noise. This permits quantitative measurment of the noise contribution attributable to variations in cross-sectional area of connections for various applications and for qualitative prediction of electromigration lifetimes of metal films, particularly aluminum, having different microstructures. The test system includes an enclosure which includes several nested groups of housings including a sample oven within a device under test box which is, in turn, contained within the system enclosure. Wire wound resistors powered by a DC power supply are used to provide heating without interfering with measurement of 1/f noise of a device under test (D.U.T.). A biasing circuit and a bank of batteries are also provided with separate enclosures within the system enclosure.
摘要:
An advanced back-end-of-line (BEOL) interconnect structure having a hybrid dielectric is disclosed. The inter-layer dielectric (ILD) for the via level is preferably different from the ILD for the line level. In a preferred embodiment, the via-level ILD is formed of a low-k SiCOH material, and the line-level ILD is formed of a low-k polymeric thermoset material.