摘要:
A method for forming a MOS transistor includes providing a substrate having at least a gate structure formed thereon, performing a pre-amorphization (PAI) process to form amorphized regions in the substrate, sequentially performing a co-implantation process, a first ion implantation process, and a first rapid thermal annealing (RTA) process to form lightly doped drains (LDDs), forming spacers on sidewalls of the gate structure, and forming a source/drain.
摘要:
A method for manufacturing CMOS transistors includes an etching back process alternatively performed after the gate structure formation, the lightly doped drain formation, source/drain implantation, or SEG process to etch a hard mask layer covering and protecting a first type gate structure, and to reduce thickness deviation between the hard masks covering the first type gate structure and a second type gate structure. Therefore the damage to spacers, STIs, and the profile of the gate structures due to the thickness deviation is prevented.
摘要:
A method of forming CMOS transistor is disclosed. A CMOS transistor having a first active area and a second active area is provided. In order to maintain the concentration of the dopants in the second active area, according to the method of the present invention an ion implantation process is performed to form a lightly doped drain (LDD) in the second active area after an epitaxial layer is formed in the first active area. On the other hand, the ion implantation process is performed to form the respective LDD of the first active area and the second active area. After the epitaxial layer in the first active area is formed, another ion implantation process is performed to implant dopants into the LDD of the second active area again.
摘要:
The present invention provides a method for forming a metal-oxide-semiconductor (MOS) device. The method includes at least the steps of forming a silicon germanium layer by the selective epitaxy growth process and forming a cap layer on the silicon germanium layer by the selective growth process. Hence, the undesirable effects caused by ion implantation can be mitigated.
摘要:
A method of forming a semiconductor device. The method comprises steps of providing a substrate having a first transistor, a second transistor and non-salicide device formed thereon and the conductive type of the first transistor is different from that of the second transistor. A buffer layer is formed over the substrate and a tensile material layer is formed over the buffer layer. A portion of the tensile material layer over the second transistor is thinned and a spike annealing process is performed. The tensile material layer is removed to expose the buffer layer over the substrate and a patterned salicide blocking layer is formed over the non-salicide device. A salicide process is performed for forming a salicide layer on a portion of the first transistor and the second transistor.
摘要:
A method of manufacturing a MOS transistor device. First, a semiconductor substrate having a gate structure is prepared. The gate structure has two sidewalls and a liner on the sidewalls. Subsequently, a stressed cap layer is formed on the semiconductor substrate, and covers the gate structure and the liner. Next, an activating process is performed. Furthermore, the stressed cap layer is etched to be a salicide block. Afterward, a salicide process is performed to form a silicide layer on the regions that are not covered by the stressed cap layer.
摘要:
A method for fabricating a semiconductor device is provided. First, a substrate is provided, and a first-type MOS (metallic oxide semiconductor) transistor, an input/output (I/O) second-type MOS transistor, and a core second-type MOS transistor are formed on the substrate. Then, a first stress layer is formed to overlay the substrate, the first-type MOS transistor, the I/O second-type MOS transistor, and the core second-type MOS transistor. Then, at least the first stress layer on the core second-type MOS transistor is removed to reserve at least the first stress layer on the first-type MOS transistor. Finally, a second stress layer is formed on the core second-type MOS transistor.
摘要:
A method for manufacturing CMOS transistors includes an etching back process alternatively performed after the gate structure formation, the lightly doped drain formation, source/drain implantation, or SEG process to etch a hard mask layer covering and protecting a first type gate structure, and to reduce thickness deviation between the hard masks covering the first type gate structure and a second type gate structure. Therefore the damage to spacers, STIs, and the profile of the gate structures due to the thickness deviation is prevented.
摘要:
A method for fabricating a semiconductor structure is described. A substrate is provided, having thereon a gate structure and a spacer on the sidewall of the gate structure and having therein an S/D extension region beside the gate structure. An opening is formed in the substrate beside the spacer, and then an S/D region is formed in or on the substrate at the bottom of the opening. A metal silicide layer is formed on the S/D region and the gate structure, and then a stress layer is formed over the substrate.
摘要:
A method of fabricating a complementary metal oxide semiconductor (CMOS) device is provided. A first conductive type MOS transistor including a source/drain region using a semiconductor compound as major material is formed in a first region of a substrate. A second conductive type MOS transistor is formed in a second region of the substrate. Next, a pre-amorphous implantation (PAI) process is performed to amorphize a gate conductive layer of the second conductive type MOS transistor. Thereafter, a stress-transfer-scheme (STS) is formed on the substrate in the second region to generate a stress in the gate conductive layer. Afterwards, a rapid thermal annealing (RTA) process is performed to activate the dopants in the source/drain region. Then, the STS is removed.