摘要:
A method of fabricating a MOS transistor is disclosed. The method includes the steps of: providing a semiconductor substrate; forming at least a gate on the semiconductor substrate; forming a protective layer on the semiconductor substrate, and the protective layer covering the surface of the gate; forming at least a recess within the semiconductor substrate adjacent to the gate; forming an epitaxial layer in the recess, wherein the top surface of the epitaxial layer is above the surface of the semiconductor substrate; and forming a spacer on the sidewall of the gate and on a portion of the epitaxial layer, wherein a contact surface of the epitaxial layer and the spacer is above the surface of the semiconductor substrate.
摘要:
The present invention provides a method for fabricating a metal oxide semiconductor transistor. First, a semiconductor substrate is provided and at least a gate is formed on the semiconductor substrate. A protective layer is then formed on the semiconductor substrate and the gate. Subsequently, at least a recess is formed in the semiconductor substrate adjacent to the gate, and then an epitaxial layer is formed in the recess. A lightly doped region is formed in the semiconductor substrate adjacent to the gate. Finally, a spacer is formed on the sidewall of the gate.
摘要:
A method of fabricating a MOS transistor is disclosed. The method includes the steps of: providing a semiconductor substrate; forming at least a gate on the semiconductor substrate; forming a protective layer on the semiconductor substrate, and the protective layer covering the surface of the gate; forming at least a recess within the semiconductor substrate adjacent to the gate; forming an epitaxial layer in the recess, wherein the top surface of the epitaxial layer is above the surface of the semiconductor substrate; and forming a spacer on the sidewall of the gate and on a portion of the epitaxial layer, wherein a contact surface of the epitaxial layer and the spacer is above the surface of the semiconductor substrate.
摘要:
The present invention provides a method for fabricating a metal oxide semiconductor transistor. First, a semiconductor substrate is provided and at least a gate is formed on the semiconductor substrate. A protective layer is then formed on the semiconductor substrate and the gate. Subsequently, at least a recess is formed in the semiconductor substrate adjacent to the gate, and then an epitaxial layer is formed in the recess. A lightly doped region is formed in the semiconductor substrate adjacent to the gate. Finally, a spacer is formed on the sidewall of the gate.
摘要:
A method of fabricating a MOS transistor is described. A substrate is provided, and then a composite layer for forming a gate structure and a carbon-containing mask material layer are formed thereon in turn, wherein the carbon-containing mask material layer is formed with a carbon-containing precursor gas and a reaction gas. The carbon-containing mask material layer and the composite layer are patterned into a carbon-containing hard mask layer and a gate structure, respectively. A spacer is formed on the sidewalls of the gate structure and the carbon-containing hard mask layer. A passivation layer is formed over the substrate, and then a portion of the passivation layer is removed to expose a portion of the substrate. A doped epitaxial layer is formed on the exposed portion of the substrate.
摘要:
A semiconductor device is provided. The semiconductor device comprises a substrate, a gate structure, a spacer, a first poly-SiGe layer being boron-doped and a second poly-SiGe layer being boron-doped. The substrate has two openings and the gate structure is disposed on the substrate between the openings. The spacer is disposed on the sidewalls of the gate structure and above a portion of the openings. The first poly-SiGe layer is disposed on the surface of the openings in the substrate. The second poly-SiGe layer is disposed on the first poly-SiGe layer, and the top of the second poly-SiGe layer is higher than the surface of the substrate. Moreover, the boron concentration in the first poly-SiGe layer is lower than that in the second poly-SiGe layer.
摘要:
A method for forming a silicon-containing film is described. A substrate is placed in a reaction chamber, and then a silicon-containing gas is introduced into the reaction chamber to conduct a CVD process and deposit a silicon-containing film on the substrate. During the CVD process, the temperature of at least the top inner surface of the reaction chamber is controlled below 50° C.
摘要:
A method of fabricating gates is provided. A first sacrificial layer having a first and a second gate openings therein is formed on a substrate. Next, a gate dielectric layer is formed on the substrate exposed by the first sacrificial layer. Thereafter, a second sacrificial layer is filled in the first and second gate openings. The second sacrificial layer in the first gate opening is removed, and then a first conductive layer is filled in the first gate opening as a gate of a MOS transistor of a first conductivity type. Then, the second sacrificial layer in the second gate opening is removed. A second conductive layer is filled in the second gate opening as a gate of a MOS transistor of a second conductivity type, and the first sacrificial layer is removed.
摘要:
A complementary metal-oxide-semiconductor (CMOS) device includes a substrate with a first active region and a second active region; a first gate structure and a second gate structure, respectively disposed on the first active region and the second active region; a first spacer structure and a second spacer structure respectively disposed on sidewalls of the first gate structure and the second gate structure; a first LDD and a second LDD respectively disposed in the substrate at both sides of the first gate structure and the second gate structure; an epitaxial material layer, disposed in the first active region and located on a side of the first LDD; and a passivation layer, disposed on the first gate structure, the first spacer structure, and the first LDD and covering the second active region, wherein the passivation layer comprises a carbon-containing oxynitride layer.
摘要:
A complementary metal-oxide-semiconductor (CMOS) device includes a substrate with a first active region and a second active region; a first gate structure and a second gate structure, respectively disposed on the first active region and the second active region; a first spacer structure and a second spacer structure respectively disposed on sidewalls of the first gate structure and the second gate structure; a first LDD and a second LDD respectively disposed in the substrate at both sides of the first gate structure and the second gate structure; an epitaxial material layer, disposed in the first active region and located on a side of the first LDD; and a passivation layer, disposed on the first gate structure, the first spacer structure, and the first LDD and covering the second active region, wherein the passivation layer comprises a carbon-containing oxynitride layer.