WO2012016361A1 - 应变半导体沟道形成方法和半导体器件 - Google Patents
应变半导体沟道形成方法和半导体器件 Download PDFInfo
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- WO2012016361A1 WO2012016361A1 PCT/CN2010/001436 CN2010001436W WO2012016361A1 WO 2012016361 A1 WO2012016361 A1 WO 2012016361A1 CN 2010001436 W CN2010001436 W CN 2010001436W WO 2012016361 A1 WO2012016361 A1 WO 2012016361A1
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 98
- 238000000034 method Methods 0.000 title claims abstract description 54
- 239000010410 layer Substances 0.000 claims abstract description 264
- 229910000577 Silicon-germanium Inorganic materials 0.000 claims abstract description 84
- 239000002184 metal Substances 0.000 claims abstract description 35
- 239000000758 substrate Substances 0.000 claims abstract description 23
- 239000011229 interlayer Substances 0.000 claims abstract description 20
- 238000000151 deposition Methods 0.000 claims abstract description 9
- 238000005530 etching Methods 0.000 claims abstract description 8
- 125000006850 spacer group Chemical group 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 description 18
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 9
- 229920005591 polysilicon Polymers 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 238000000137 annealing Methods 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000011282 treatment Methods 0.000 description 7
- 229910052732 germanium Inorganic materials 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 229910021332 silicide Inorganic materials 0.000 description 4
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical group [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 4
- 238000001312 dry etching Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000001039 wet etching Methods 0.000 description 3
- 229910010038 TiAl Inorganic materials 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000005380 borophosphosilicate glass Substances 0.000 description 1
- 239000005388 borosilicate glass Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005389 semiconductor device fabrication Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical class [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
- H01L21/82—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
- H01L21/822—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using silicon technology
- H01L21/8232—Field-effect technology
- H01L21/8234—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type
- H01L21/8238—Complementary field-effect transistors, e.g. CMOS
- H01L21/823807—Complementary field-effect transistors, e.g. CMOS with a particular manufacturing method of the channel structures, e.g. channel implants, halo or pocket implants, or channel materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/10—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
- H01L29/1025—Channel region of field-effect devices
- H01L29/1029—Channel region of field-effect devices of field-effect transistors
- H01L29/1033—Channel region of field-effect devices of field-effect transistors with insulated gate, e.g. characterised by the length, the width, the geometric contour or the doping structure
- H01L29/1054—Channel region of field-effect devices of field-effect transistors with insulated gate, e.g. characterised by the length, the width, the geometric contour or the doping structure with a variation of the composition, e.g. channel with strained layer for increasing the mobility
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66568—Lateral single gate silicon transistors
- H01L29/66651—Lateral single gate silicon transistors with a single crystalline channel formed on the silicon substrate after insulating device isolation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7842—Field effect transistors with field effect produced by an insulated gate means for exerting mechanical stress on the crystal lattice of the channel region, e.g. using a flexible substrate
- H01L29/7848—Field effect transistors with field effect produced by an insulated gate means for exerting mechanical stress on the crystal lattice of the channel region, e.g. using a flexible substrate the means being located in the source/drain region, e.g. SiGe source and drain
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/49—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET
- H01L29/51—Insulating materials associated therewith
- H01L29/517—Insulating materials associated therewith the insulating material comprising a metallic compound, e.g. metal oxide, metal silicate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66545—Unipolar field-effect transistors with an insulated gate, i.e. MISFET using a dummy, i.e. replacement gate in a process wherein at least a part of the final gate is self aligned to the dummy gate
Definitions
- the present invention relates to the field of semiconductors, and more particularly to semiconductor devices and methods of fabricating the same, and more particularly to a method of forming a strained semiconductor channel and a semiconductor device fabricated by the method. Background technique
- a tensile strained Si layer structure provided on the SiGe relaxation layer is widely used.
- the composition of the SiGe relaxed layer is expressed in the form of Si 1-x Ge, xe [0, 1].
- Fig. 1A shows an atomic lattice diagram of a tensile strained Si layer structure disposed on a SiGe relaxed layer
- Fig. 1B shows an energy level structure of a tensile strained Si layer structure disposed on a SiGe relaxed layer.
- the conduction band in the tensile strained Si layer is lower than that in the SiGe relaxation layer due to the large biaxial tensile stress in the tensile strained Si layer.
- a very high electronic in-plane mobility will be obtained in the tensile strained Si layer.
- Figure 2A shows the longitudinal Ge atomic percent distribution of the SiGe relaxed layer.
- the percentage of Ge atoms gradually increases from 0% to 100% from bottom to top, that is, X in the composition Si ⁇ Ge x gradually changes from 0 to 1.
- a SiGe relaxed layer or a Ge layer is obtained by growing an ultrathick (several micrometers) SiGe layer on a Si substrate. Further, the compressive strain in the SiGe relaxed layer is released by defect generation (Fig. 2B), thereby obtaining a SiGe relaxed layer or a Ge layer.
- FIG. 3A, 3B and 3C respectively show three conventional strained Si channel formation methods
- Fig. 3A shows a strained Si/body SiGe MOSFET (Metal Oxide Semiconductor Field Effect Transistor) structure
- Fig. 3B shows SG0I ( SiGe-On-Insulator) MOSFET structure
- Figure 3C shows the SSDOI (Strained Si Directly On Insulator) MOSFET structure.
- strain Si must be formed on the SiGe layer (or buried oxide) before the device fabrication process (for example, shallow trench isolation (STI), gate formation, etc.) Cladding.
- the strained Si coating may be damaged during the device fabrication process, for example, pad oxidation treatment in the STI process, sacrificial oxidation before the gate formation process Treatment, various wet chemical cleaning treatments, etc., may cause loss of the strained Si coating;
- the strained Si coating may relax during the high temperature step (stress is released), for example, to activate the source/ Annealing of the drain dopant may cause stress in the strained Si cladding to be released. Summary of the invention
- the present invention proposes a strained semiconductor channel formation method in which a strained semiconductor channel (a material may be selected from Si, Ge or SiGe) after removing the replacement gate, thereby avoiding strained semiconductor trenches
- a strained semiconductor channel (a material may be selected from Si, Ge or SiGe) after removing the replacement gate, thereby avoiding strained semiconductor trenches
- the channel is exposed to high temperature source/drain annealing, and semiconductor layer losses are avoided due to the processing steps experienced to reduce the strained semiconductor channel.
- the present invention also proposes a semiconductor device manufactured by the method.
- a method of forming a strained semiconductor channel comprising the steps of: forming a SiGe relaxed layer on a semiconductor substrate; forming a dielectric layer on the SiGe relaxed layer, the dielectric Forming a replacement gate on the layer, the dielectric layer and the replacement gate forming an alternative gate stack structure; depositing an interlayer dielectric layer, planarizing the interlayer dielectric layer to expose the replacement gate Etching the replacement gate and the dielectric layer to form an opening; performing selective semiconductor epitaxial growth in the opening to form a semiconductor epitaxial layer; depositing a high- ⁇ dielectric layer and a metal layer; and depositing The metal layer and the high- ⁇ dielectric layer perform a planarization process to remove the high- ⁇ dielectric layer and the metal layer overlying the interlayer dielectric layer to form a metal gate.
- the semiconductor epitaxial layer is a Si epitaxial layer, a Ge epitaxial layer, or a SiGe epitaxial layer.
- the strained semiconductor channel forming method further comprises the steps of: etching the S iGe relaxation layer in the opening To etch out a space for semiconductor epitaxial growth.
- the thickness of the semiconductor epitaxial layer is in the range of 5 to 10 nm.
- the percentage of Ge atoms in the SiGe relaxed layer gradually changes from 20% adjacent to the semiconductor substrate to 100% away from the semiconductor substrate.
- an etch stop layer is formed in the step of forming the SiGe relaxed layer. More preferably, the etch stop layer has a different percentage of Ge atoms than the SiGe relaxed layer.
- a semiconductor device comprising: a semiconductor substrate; a SiGe relaxation layer formed on the semiconductor substrate; a semiconductor epitaxial layer formed on the SiGe relaxation layer, located On the SiGe relaxation layer, or embedded in the SiGe relaxation layer; a high-K dielectric layer deposited on the entire surface of the semiconductor epitaxial layer to form a hollow column having a bottom surface; and a metal gate, Filled inside the hollow cylindrical shape formed by the high-k dielectric layer.
- the semiconductor epitaxial layer is a Si epitaxial layer, a Ge epitaxial layer, or a SiGe epitaxial layer.
- the thickness of the semiconductor epitaxial layer is in the range of 5 to 10 nm.
- the semiconductor device further includes: a sidewall spacer deposited on the SiGe relaxation layer, surrounding an outer circumference of the semiconductor epitaxial layer and the high-k dielectric layer, or surrounding the high-k dielectric layer a peripheral layer; and an interlayer dielectric layer deposited on the SiGe relaxation layer surrounding the periphery of the sidewall spacer.
- the percentage of Ge atoms in the SiGe relaxed layer gradually changes from 20% adjacent to the semiconductor substrate to 100% away from the semiconductor substrate.
- the SiGe relaxation layer is formed with an etch stop layer. More preferably, the etch stop layer has a different percentage of Ge atoms than the SiGe relaxed layer.
- the strained semiconductor layer is formed after removing the replacement gate, thereby avoiding The strained semiconductor channel is exposed to a high temperature source/drain anneal, and the loss of the strained semiconductor layer is avoided by reducing the processing steps experienced by the strained semiconductor channel.
- FIG. 1A shows an atomic lattice diagram of a tensile strained Si layer structure disposed on a SiGe relaxed layer
- FIG. 1B shows an energy level structure of a tensile strained Si layer structure disposed on a SiGe relaxed layer
- FIGS. 2A and 2B are schematic views for explaining a preparation method of a relaxation layer and properties thereof;
- 3A, 3B and 3C show three conventional strained Si channel formation methods, respectively;
- FIG. 14 shows a fabrication of a semiconductor device manufacturing method according to a first embodiment of the present invention.
- FIG. 4 to 9 and 15 to 18 are schematic views showing respective steps of a method of fabricating a semiconductor device according to a second embodiment of the present invention, wherein FIG. 18 shows a semiconductor device fabrication according to a second embodiment of the present invention. The method of fabricating a completed semiconductor device.
- FIG. Figure 14 is a schematic view showing a semiconductor device in which a semiconductor device manufacturing method is completed according to a first embodiment of the present invention.
- the semiconductor device manufactured according to the process of the first embodiment of the present invention mainly comprises: a substrate 300 (Si wafer, SOI, etc.), a SiGe relaxation layer 200 (Ge atom% is as shown in FIG. The lower to upper direction, from 20% to 100%), the semiconductor epitaxial layer 260 (shown as the Si epitaxial layer 260, which may also be a Ge ⁇ epitaxial layer or a SiGe epitaxial layer) (thickness: 5 to 10 nm), high K a dielectric layer 320 (having a thickness of 1 to 3 nm), a metal gate 330, a Si spacer 240 (having a width of 10 to 40 nm), and an interlayer dielectric layer 250 (having a thickness of 15 to 50 nm), wherein the SiGe relaxation layer 200 is formed in On the substrate 300; a gate structure composed of a Si 3 N 4 spacer 240, a Si epitaxial layer 260, a high-k dielectric layer
- the Si epitaxial layer 260 is formed, thereby avoiding the source/drain annealing treatment in which the strained Si channel is exposed to a high temperature, and the processing steps to be experienced by reducing the strained Si channel, The loss of the Si epitaxial layer 260 is avoided.
- a SiGe relaxation layer 200 is formed on a substrate 300 (Si wafer, SOI, etc.).
- the percentage of Ge atoms that is, the number of Ge atoms, is a percentage of the total number of atoms, as shown in FIG. 4 from the bottom to the top direction (from the adjacent substrate 300 to the direction away from the substrate 300), For example, the gradual change from 20% to 100%, that is, the X in the composition 5 ⁇ 6 is gradually changed from 0.2 to 1.
- the group of SiGe relaxation layers 200 The specific numerical values are used for the purpose of example only, and those skilled in the art can select an appropriate other composition (BP, re-selecting the variation range of X) according to actual needs, and the gradual change of X may be linear change, hyperbolic change, Various changes such as index changes.
- an etch stop layer eg, a change in Ge atomic % may be formed in the SiGe relaxed layer 200 so that the depth of the etch to be performed in the step shown in FIG. 10 can be controlled.
- the control of the etching depth can be achieved by forming a lamination structure of the relaxation layer/etch stop layer/relaxation layer in the SiGe relaxation layer 200 as needed.
- a replacement gate structure is formed on the SiGe relaxation layer 200 (dielectric layer 220, replacement gate 230 (shown as polysilicon gate 230, other materials known in the art may also be used), surrounding and covering the dielectric Layer 220 and Si of polysilicon gate 230 have sidewalls 240 and Si have a cap layer).
- the dielectric layer 220 has a thickness of 1 to 3 nm
- the polysilicon gate 230 has a thickness of 20 to 70 nm
- the Si 3 N 4 spacer 240 has a width in the horizontal direction of 10 to 40 nm, Si 3 N 4 .
- the thickness of the cap layer is 15 to 40 nm.
- This step is also part of the conventional process where polysilicon gate 230 is formed as an alternative to the metal gate.
- a source/drain region (not shown) is formed by a conventional method (for example, by performing ion and high temperature annealing).
- an interlayer dielectric layer is deposited on the SiGe relaxed layer 200 on which the replacement gate structure has been formed.
- Inter Layer Dielectric layer 250 For example, undoped silicon oxide (SiO 2 ), various doped silicon oxides (such as borosilicate glass, borophosphosilicate glass, etc.) and silicon nitride (Si 3 N 4 ) can be used as interlayer dielectric layers. 250 constituent materials.
- SiO 2 undoped silicon oxide
- various doped silicon oxides such as borosilicate glass, borophosphosilicate glass, etc.
- silicon nitride Si 3 N 4
- the interlayer dielectric layer 250 is subjected to a chemical mechanical planarization (CMP) treatment, thereby exposing the Si cap layer of the replacement gate structure.
- CMP chemical mechanical planarization
- an additional CMP process or a reactive ion etching (RIE) process for Si 3 N 4 is performed to remove the Si 3 N 4 cap layer, exposing the polysilicon gate 230 in place of the gate structure.
- RIE reactive ion etching
- the polysilicon gate 230 is removed by wet etching or dry etching.
- the SiGe relaxation layer 200 is etched by wet etching or dry etching to etch a space for Si epitaxial growth (etching depth is 5 to 10 nm).
- etching depth is 5 to 10 nm.
- an etch stop layer e.g., changing Ge atom%: may be formed in the SiGe relaxation layer 200, so that the etching depth can be controlled.
- a high-k dielectric layer 320 is deposited on the surface of the structure shown in FIG. 11, and the deposition thickness is in the range of 1 to 3 nm.
- the metal layer for constituting the metal gate 330 is deposited on the surface of the high-k dielectric layer 320.
- the metal layer may include a plurality of conductive layers, for example, a TiN layer is first deposited. A TiAl layer is then deposited.
- a planarization process (eg, CMP process, etc.) is performed on the formed metal layer and the high-k dielectric layer 320 to remove the high coverage of the top of the interlayer dielectric layer 250 and the Si spacer 240.
- the K dielectric layer 320 and the metal layer form a metal gate 330.
- the polysilicon gate 230 as a replacement gate has been completely replaced by the metal gate 330.
- the semiconductor fabrication process can be performed in a conventional manner, such as forming a source region silicide/drain region silicide, and/or forming a CMOS device or the like.
- the Si epitaxial layer 260 is formed, thereby avoiding the source/drain annealing treatment in which the strained Si channel is exposed to a high temperature, and the processing steps to be experienced by reducing the strained Si channel, The loss of the Si epitaxial layer 260 is avoided.
- Figure 18 is a schematic view showing a semiconductor device in which a semiconductor device manufacturing method is completed according to a second embodiment of the present invention.
- the semiconductor device manufactured according to the process of the second embodiment of the present invention mainly comprises: a substrate 300 (Si wafer, SOI, etc.), a SiGe relaxation layer 200 (Ge atom ° / according to FIG. 18
- the semiconductor epitaxial layer 260 (shown as the Si epitaxial layer 260, which may also be a Ge epitaxial layer or a SiGe epitaxial layer) (thickness is 5 to 10 nm), high in the direction from bottom to top, from 20% to 100%) K dielectric layer 320 (thickness l ⁇ 3nm), metal gate 330, Si 3 N 4 spacer 240 (width 10 ⁇ 40nm), dielectric layer 250 (thickness 15 ⁇ 50nm), wherein SiGe relaxation layer 200 is formed on the substrate 300; a gate structure composed of the Si spacer 240, the Si epitaxial layer 260, the high K dielectric layer 320, and the metal gate 330 is formed on the SiGe relaxation layer 200; the interlayer dielectric layer
- the Si epitaxial layer 260 is formed, thereby avoiding the source/drain annealing treatment in which the strained Si channel is exposed to a high temperature, and the processing steps to be experienced by reducing the strained Si channel, The loss of the Si epitaxial layer 260 is avoided.
- the polysilicon gate 230 has been removed by wet etching or dry etching.
- Si epitaxial growth is performed directly on the SiGe relaxation layer 200 in the opening surrounded by the Si 3 N 4 spacer 240 to form a top surface of the SiGe relaxation layer 200.
- the Si epitaxial layer 260 and the Si epitaxial layer 260 have a thickness of 5 to 10 nm.
- a high-k dielectric layer 320 is deposited on the surface of the structure shown in Fig. 15, and the deposition thickness is in the range of 1 to 3 nm.
- the metal layer for constituting the metal gate 330 is deposited on the surface of the high-k dielectric layer 320.
- the metal layer may include a plurality of conductive layers, for example, a TiN layer is first deposited, A TiAl layer is then deposited.
- a planarization process (eg, CMP process, etc.) is performed on the formed metal layer and the high-k dielectric layer 320, and the interlayer dielectric layer 250 and the Si 3 N 4 sidewall 240 are removed.
- a top high dielectric layer 320 and a metal layer form a metal gate 330.
- the polysilicon gate 230 as a replacement gate has been completely replaced by the metal gate 330.
- the semiconductor fabrication process can be performed in a conventional manner, such as forming a source region silicide/drain region silicide, and/or forming a CMOS device or the like.
- the Si epitaxial layer 260 is formed, thereby avoiding the source of the strained Si channel being exposed to high temperature.
- the pole/drain annealing process, and the loss of the Si epitaxial layer 260, is avoided due to the reduced processing steps experienced by the strained Si channel. .
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Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US13/059,285 US8575654B2 (en) | 2010-08-04 | 2010-09-19 | Method of forming strained semiconductor channel and semiconductor device |
GB1121729.6A GB2487113B (en) | 2010-08-04 | 2010-09-19 | Method of forming strained semiconductor channel and semiconductor device |
CN201090000828.2U CN202758852U (zh) | 2010-08-04 | 2010-09-19 | 一种半导体器件 |
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CN201010244987.3A CN102347235B (zh) | 2010-08-04 | 2010-08-04 | 应变半导体沟道形成方法和半导体器件 |
CN201010244987.3 | 2010-08-04 |
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CN103456633A (zh) * | 2012-05-30 | 2013-12-18 | 中芯国际集成电路制造(上海)有限公司 | Mos管及其形成方法 |
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CN103367133B (zh) * | 2012-03-29 | 2016-03-30 | 中芯国际集成电路制造(上海)有限公司 | 高介电常数金属栅极制造方法 |
CN103681345B (zh) * | 2012-09-26 | 2016-05-25 | 中芯国际集成电路制造(上海)有限公司 | 晶体管及其形成方法 |
US8878302B2 (en) * | 2012-12-05 | 2014-11-04 | Taiwan Semiconductor Manufacturing Company, Ltd. | Semiconductor device having SiGe substrate, interfacial layer and high K dielectric layer |
JP6309299B2 (ja) * | 2013-02-27 | 2018-04-11 | ルネサスエレクトロニクス株式会社 | 圧縮歪みチャネル領域を有する半導体装置及びその製造方法 |
CN105097888A (zh) * | 2014-05-12 | 2015-11-25 | 中芯国际集成电路制造(上海)有限公司 | 场效应晶体管及其制造方法 |
CN110459673B (zh) | 2018-05-07 | 2022-11-29 | 联华电子股份有限公司 | 半导体元件及其制作方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040000268A1 (en) * | 1998-04-10 | 2004-01-01 | Massachusetts Institute Of Technology | Etch stop layer system |
CN1525542A (zh) * | 2003-02-28 | 2004-09-01 | ���ǵ�����ʽ���� | 具有抬升的源极和漏极结构的金氧半晶体管及其制造方法 |
CN1612353A (zh) * | 2003-10-31 | 2005-05-04 | 国际商业机器公司 | 高迁移率异质结互补场效应晶体管及其方法 |
CN1790742A (zh) * | 2004-11-02 | 2006-06-21 | 国际商业机器公司 | 具有内部隔片结构的金属镶嵌栅极场效应晶体管 |
US20060166417A1 (en) * | 2005-01-27 | 2006-07-27 | International Business Machines Corporation | Transistor having high mobility channel and methods |
CN101236968A (zh) * | 2007-01-31 | 2008-08-06 | 国际商业机器公司 | Mos器件及其制造方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000243854A (ja) * | 1999-02-22 | 2000-09-08 | Toshiba Corp | 半導体装置及びその製造方法 |
US6831292B2 (en) * | 2001-09-21 | 2004-12-14 | Amberwave Systems Corporation | Semiconductor structures employing strained material layers with defined impurity gradients and methods for fabricating same |
US6916694B2 (en) * | 2003-08-28 | 2005-07-12 | International Business Machines Corporation | Strained silicon-channel MOSFET using a damascene gate process |
JP2005197405A (ja) * | 2004-01-06 | 2005-07-21 | Toshiba Corp | 半導体装置とその製造方法 |
CN100508209C (zh) * | 2007-08-01 | 2009-07-01 | 中电华清微电子工程中心有限公司 | Npn型的锗硅异质结双极晶体管及其制造方法 |
-
2010
- 2010-08-04 CN CN201010244987.3A patent/CN102347235B/zh active Active
- 2010-09-19 WO PCT/CN2010/001436 patent/WO2012016361A1/zh active Application Filing
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Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040000268A1 (en) * | 1998-04-10 | 2004-01-01 | Massachusetts Institute Of Technology | Etch stop layer system |
CN1525542A (zh) * | 2003-02-28 | 2004-09-01 | ���ǵ�����ʽ���� | 具有抬升的源极和漏极结构的金氧半晶体管及其制造方法 |
CN1612353A (zh) * | 2003-10-31 | 2005-05-04 | 国际商业机器公司 | 高迁移率异质结互补场效应晶体管及其方法 |
CN1790742A (zh) * | 2004-11-02 | 2006-06-21 | 国际商业机器公司 | 具有内部隔片结构的金属镶嵌栅极场效应晶体管 |
US20060166417A1 (en) * | 2005-01-27 | 2006-07-27 | International Business Machines Corporation | Transistor having high mobility channel and methods |
CN101236968A (zh) * | 2007-01-31 | 2008-08-06 | 国际商业机器公司 | Mos器件及其制造方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103456633A (zh) * | 2012-05-30 | 2013-12-18 | 中芯国际集成电路制造(上海)有限公司 | Mos管及其形成方法 |
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