JP6590716B2 - トランジスタの閾値制御方法および半導体装置の製造方法 - Google Patents
トランジスタの閾値制御方法および半導体装置の製造方法 Download PDFInfo
- Publication number
- JP6590716B2 JP6590716B2 JP2016017680A JP2016017680A JP6590716B2 JP 6590716 B2 JP6590716 B2 JP 6590716B2 JP 2016017680 A JP2016017680 A JP 2016017680A JP 2016017680 A JP2016017680 A JP 2016017680A JP 6590716 B2 JP6590716 B2 JP 6590716B2
- Authority
- JP
- Japan
- Prior art keywords
- microwave
- film
- electrode layer
- semiconductor substrate
- processing apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000004065 semiconductor Substances 0.000 title claims description 50
- 238000000034 method Methods 0.000 title claims description 34
- 238000004519 manufacturing process Methods 0.000 title claims description 21
- 239000000758 substrate Substances 0.000 claims description 48
- 230000003647 oxidation Effects 0.000 claims description 42
- 238000007254 oxidation reaction Methods 0.000 claims description 42
- 229910010038 TiAl Inorganic materials 0.000 claims description 34
- 230000005540 biological transmission Effects 0.000 claims description 34
- 230000007246 mechanism Effects 0.000 claims description 27
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 24
- 230000005855 radiation Effects 0.000 claims description 23
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 22
- 239000001301 oxygen Substances 0.000 claims description 22
- 229910052760 oxygen Inorganic materials 0.000 claims description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 20
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 17
- 230000008569 process Effects 0.000 claims description 17
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 239000003989 dielectric material Substances 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 238000009832 plasma treatment Methods 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims 2
- 239000007789 gas Substances 0.000 description 64
- 230000015572 biosynthetic process Effects 0.000 description 23
- 238000005121 nitriding Methods 0.000 description 15
- 238000005240 physical vapour deposition Methods 0.000 description 12
- 239000004020 conductor Substances 0.000 description 11
- 241000237858 Gastropoda Species 0.000 description 7
- 238000000231 atomic layer deposition Methods 0.000 description 7
- 230000004888 barrier function Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 150000002500 ions Chemical class 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 238000005229 chemical vapour deposition Methods 0.000 description 5
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- 238000004833 X-ray photoelectron spectroscopy Methods 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 241000894007 species Species 0.000 description 4
- 238000000137 annealing Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 150000004767 nitrides Chemical class 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical group CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910017150 AlTi Inorganic materials 0.000 description 1
- 229910000530 Gallium indium arsenide Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/28008—Making conductor-insulator-semiconductor electrodes
- H01L21/28017—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon
- H01L21/28026—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor
- H01L21/28088—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor the final conductor layer next to the insulator being a composite, e.g. TiN
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32192—Microwave generated discharge
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32192—Microwave generated discharge
- H01J37/32211—Means for coupling power to the plasma
- H01J37/3222—Antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/02—Details
- H01J49/10—Ion sources; Ion guns
- H01J49/105—Ion sources; Ion guns using high-frequency excitation, e.g. microwave excitation, Inductively Coupled Plasma [ICP]
-
- 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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02172—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides
- H01L21/02175—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides characterised by the metal
- H01L21/02178—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides characterised by the metal the material containing aluminium, e.g. Al2O3
-
- 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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
- H01L21/02227—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a process other than a deposition process
- H01L21/0223—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a process other than a deposition process formation by oxidation, e.g. oxidation of the substrate
- H01L21/02244—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a process other than a deposition process formation by oxidation, e.g. oxidation of the substrate of a metallic layer
-
- 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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02296—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer
- H01L21/02299—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer pre-treatment
- H01L21/02312—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer pre-treatment treatment by exposure to a gas or vapour
- H01L21/02315—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer pre-treatment treatment by exposure to a gas or vapour treatment by exposure to a plasma
-
- 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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3205—Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
- H01L21/321—After treatment
-
- 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
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
-
- 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
- H01L21/823828—Complementary field-effect transistors, e.g. CMOS with a particular manufacturing method of the gate conductors, e.g. particular materials, shapes
- H01L21/823842—Complementary field-effect transistors, e.g. CMOS with a particular manufacturing method of the gate conductors, e.g. particular materials, shapes gate conductors with different gate conductor materials or different gate conductor implants, e.g. dual gate structures
-
- 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
- H01L21/823857—Complementary field-effect transistors, e.g. CMOS with a particular manufacturing method of the gate insulating layers, e.g. different gate insulating layer thicknesses, particular gate insulator materials or particular gate insulator implants
-
- 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
- H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
- H01L29/423—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
- H01L29/42312—Gate electrodes for field effect devices
-
- 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
- H01L29/4966—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET the conductor material next to the insulator being a composite material, e.g. organic material, TiN, MoSi2
-
- 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
- H01L29/68—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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/46—Generating plasma using applied electromagnetic fields, e.g. high frequency or microwave energy
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Plasma & Fusion (AREA)
- Ceramic Engineering (AREA)
- Analytical Chemistry (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Electromagnetism (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
- Electrodes Of Semiconductors (AREA)
- Formation Of Insulating Films (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
Description
最初に、本発明のトランジスタの閾値制御方法が適用されるCMOSトランジスタの製造方法の一例について説明する。図1はこのようなCMOSトランジスタの製造方法を説明するためのフロー図であり、図2〜図10は各工程を模式的に示した工程断面図である。
次に、トランジスタの閾値制御について詳細に説明する。
本実施形態において、仕事関数調整用金属であるAlを含むTiAl膜からなる第2の電極層14に酸化処理を行わない場合には、図11(a)に示すように、ゲート絶縁膜12を構成するHfO2膜中の酸素が、TiAl膜中のAlに引き抜かれ、HfO2膜に酸素欠損ができる。これによりTiAl膜の仕事関数が変化し、閾値電圧(Vfb)が負方向へシフトする。
(マイクロ波プラズマ処理装置の第1の例)
TiAl膜のAlを不活性化するために、マイクロ波プラズマ処理装置が用いられるが、薄いTiAl膜に制御性良く酸素または窒素を導入するためには、スロットが形成された平面アンテナを有し、スロットから処理容器内にマイクロ波を放射させてプラズマを生成する方式のRLSA(登録商標)マイクロ波プラズマ処理装置用いて酸化処理または窒化処理を行うことが好ましい。
膜厚が3nm程度以下の極めて薄いTiAl膜に対しても制御性良く酸化処理を行える低パワーのマイクロ波プラズマ処理装置として、スロットを有する平面アンテナを備えた小型のマイクロ波放射機構を複数有するマイクロ波プラズマ源を用いたものが有効である。
図13はマイクロ波プラズマ処理装置の第2の例の概略構成を示す断面図、図14は図13のマイクロ波プラズマ処理装置のマイクロ波導入装置の構成を示す構成図、図15は図13のマイクロ波プラズマ処理装置におけるマイクロ波放射機構を模式的に示す断面図、図16は図13のマイクロ波プラズマ処理装置における処理容器の天壁部を模式的に示す底面図である。
まず、半導体基板Wを処理容器101内に搬入し、載置台102上に載置し、処理容器101内を排気してその中の圧力を例えば6〜600Paの範囲の所定の値に保持し、半導体基板Wを20〜400℃の範囲の所定温度に温度制御する。そして、ガス導入部103の複数のガス導入ノズル123からプラズマ生成ガスを導入しつつ、マイクロ波導入装置105からマイクロ波を処理容器101内に導入してマイクロ波プラズマを生成する。
(実験例1)
上記第2の例のマイクロ波プラズマ処理装置を用いて酸化処理を行ってCMOSトランジスタの閾値を制御した結果について説明する。
ここでは、Si基板上に下地のSiO2膜を形成後、ALDによるHfO2膜の成膜(膜厚3.5nm)、PVDによるキャップTiN膜の成膜(膜厚:1nm)、PVDによるTiAl膜の成膜(膜厚:3nm)を行った後、上記第2の例のマイクロ波プラズマ処理装置を用いて時間を変化させて酸化処理を行い、さらにPVDによるバリアTiN膜の成膜(膜厚30nm)、および400℃、10minのアニール処理(H2:4%)を行った。
処理温度:300℃
処理容器内圧力:133Pa
マイクロ波放射機構1本当たりのパワー:30W(パワー密度:0.15kW/m2)
Arガス流量:990sccm
O2ガス流量:10sccm
上記第2の例のマイクロ波プラズマ処理装置を用いて窒化処理を行ってCMOSトランジスタの閾値を制御した結果について説明する。
ここでは、Si基板上に下地のSiO2膜を形成後、ALDによるHfO2膜の成膜(膜厚3.5nm)、PVDによるキャップTiN膜の成膜(膜厚:1nm)、PVDによるTiAl膜の成膜(膜厚:3nm)を行った後、上記第2の例のマイクロ波プラズマ処理装置を用いて時間を変化させて窒化処理を行い、さらにPVDによるバリアTiN膜の成膜(膜厚30nm)、および400℃、10minのアニール処理(H2:4%)を行った。
処理温度:300℃
処理容器内圧力:13.3Pa
マイクロ波放射機構1本当たりのパワー:400W(パワー密度:2kW/m2)
Arガス流量:1000sccm
N2ガス流量:200sccm
なお、本発明は上記実施形態に限定されることなく本発明の思想の範囲内で種々変形可能である。例えば、上記実施形態では、CMOSトランジスタを製造する際に本発明を適用したが、本発明はこれに限らずMOSトランジスタの閾値制御に適用可能である。
11;素子分離領域
12;ゲート絶縁膜
13;第1の電極層(TiN膜)
14;第2の電極層(TiAl膜)
14a;酸化処理層(窒化処理層)
15;レジスト層
16;第3の電極層
17;第4の電極層
20;pMOS形成領域
30;nMOS形成領域
100;第1の例のマイクロ波プラズマ処理装置
200;第2の例のマイクロ波プラズマ処理装置
W;半導体基板
Claims (10)
- 半導体基板の主面のMOSトランジスタのチャンネル領域に、酸素を含有する高誘電率材料からなるゲート絶縁膜を形成し、前記ゲート絶縁膜の上に、TiN膜またはTaN膜からなる第1の電極層を形成し、前記第1の電極層の上に、仕事関数調整用金属としてAlまたはTiを含むTiAl膜、Al膜およびTi膜のいずれかからなる第2の電極層を形成し、その後、マイクロ波プラズマ処理装置による酸化処理または窒化処理により、前記第2の電極層へ選択的に酸素または窒素を添加して前記仕事関数調整用金属を不活性化し、前記ゲート絶縁膜からの酸素の引き抜きを抑制することにより前記MOSトランジスタの閾値制御を行うことを特徴とするトランジスタの閾値制御方法。
- 前記ゲート絶縁膜を構成する高誘電率材料はHfO2膜であり、前記第1の電極層はTiN膜からなり、前記第2の電極層はTiAl膜からなることを特徴とする請求項1に記載のトランジスタの閾値制御方法。
- 前記マイクロ波プラズマ処理装置は、スロットを有する平面アンテナを有し、所定パワーのマイクロ波を前記平面アンテナの前記スロットおよび誘電体材料からなるマイクロ波透過板を透過させて半導体基板が配置された処理容器内に導入し、前記マイクロ波により生成されたマイクロ波プラズマにより前記半導体基板の前記第2の電極層を酸化処理または窒化処理することを特徴とする請求項1または請求項2に記載のトランジスタの閾値制御方法。
- 前記マイクロ波プラズマ処理装置は、マイクロ波が給電され、インピーダンス整合を行うチューナと、給電されたマイクロ波を放射するスロットを有する平面アンテナと、前記平面アンテナに隣接した誘電体材料からなるマイクロ波透過板とを有するマイクロ波放射機構を複数有し、所定パワーのマイクロ波を前記複数のマイクロ波放射機構の前記スロットおよび前記マイクロ波透過板を透過させて、半導体基板が配置された処理容器内に導入し、前記マイクロ波により生成されたマイクロ波プラズマにより前記半導体基板の前記第2の電極層を酸化処理または窒化処理することを特徴とする請求項1または請求項2に記載のトランジスタの閾値制御方法。
- 前記第2の電極層は厚さが3nm以下であり、前記マイクロ波プラズマ処理が酸化処理であることを特徴とする請求項4に記載のトランジスタの閾値制御方法。
- 主面に、第1導電型のチャンネルが形成される第1領域と、第2導電型のチャンネルが形成される第2領域を有する半導体基板を準備する工程と、
前記第1領域および前記第2領域に、酸素を含有する高誘電率材料からなるゲート絶縁膜を形成する工程と、
前記ゲート絶縁膜の上に、TiN膜またはTaN膜からなる第1の電極層を形成する工程と、
前記第1の電極層の上に、仕事関数調整用金属としてAlまたはTiを含むTiAl膜、Al膜およびTi膜のいずれかからなる第2の電極層を形成する工程と、
前記第2の電極層のうち、前記第1領域のみに、マイクロ波プラズマ処理装置による酸化処理または窒化処理を施して、前記第2の電極層へ選択的に酸素または窒素を添加して前記仕事関数調整用金属を不活性化し、前記ゲート絶縁膜からの酸素の引き抜きを抑制する工程と
を有することを特徴とする半導体装置の製造方法。 - 前記ゲート絶縁膜を構成する高誘電率材料はHfO2膜であり、前記第1の電極層はTiN膜からなり、前記第2の電極層はTiAl膜からなることを特徴とする請求項6に記載の半導体装置の製造方法。
- 前記マイクロ波プラズマ処理装置は、スロットを有する平面アンテナを有し、所定パワーのマイクロ波を前記平面アンテナの前記スロットおよび誘電体材料からなるマイクロ波透過板を透過させて半導体基板が配置された処理容器内に導入し、前記マイクロ波により生成されたマイクロ波プラズマにより前記半導体基板の前記第2の電極層を酸化処理または窒化処理することを特徴とする請求項6または請求項7に記載の半導体装置の製造方法。
- 前記マイクロ波プラズマ処理装置は、マイクロ波が給電され、インピーダンス整合を行うチューナと、給電されたマイクロ波を放射するスロットを有する平面アンテナと、前記平面アンテナに隣接した誘電体材料からなるマイクロ波透過板とを有するマイクロ波放射機構を複数有し、所定パワーのマイクロ波を前記複数のマイクロ波放射機構の前記スロットおよび前記マイクロ波透過板を透過させて、半導体基板が配置された処理容器内に導入し、前記マイクロ波により生成されたマイクロ波プラズマにより前記半導体基板の前記第2の電極層を酸化処理または窒化処理することを特徴とする請求項6または請求項7に記載の半導体装置の製造方法。
- 前記第2の電極層は厚さが3nm以下であり、前記マイクロ波プラズマ処理が酸化処理であることを特徴とする請求項9に記載の半導体装置の製造方法。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016017680A JP6590716B2 (ja) | 2016-02-02 | 2016-02-02 | トランジスタの閾値制御方法および半導体装置の製造方法 |
KR1020170014231A KR101923808B1 (ko) | 2016-02-02 | 2017-02-01 | 트랜지스터의 임계치 제어 방법 및 반도체 장치의 제조 방법 |
US15/423,460 US10153169B2 (en) | 2016-02-02 | 2017-02-02 | Method of controlling threshold of transistor and method of manufacturing semiconductor device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016017680A JP6590716B2 (ja) | 2016-02-02 | 2016-02-02 | トランジスタの閾値制御方法および半導体装置の製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2017139277A JP2017139277A (ja) | 2017-08-10 |
JP6590716B2 true JP6590716B2 (ja) | 2019-10-16 |
Family
ID=59387050
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2016017680A Active JP6590716B2 (ja) | 2016-02-02 | 2016-02-02 | トランジスタの閾値制御方法および半導体装置の製造方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US10153169B2 (ja) |
JP (1) | JP6590716B2 (ja) |
KR (1) | KR101923808B1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10008564B2 (en) * | 2015-11-03 | 2018-06-26 | Tokyo Electron Limited | Method of corner rounding and trimming of nanowires by microwave plasma |
JP6960813B2 (ja) * | 2017-09-20 | 2021-11-05 | 東京エレクトロン株式会社 | グラフェン構造体の形成方法および形成装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006278873A (ja) * | 2005-03-30 | 2006-10-12 | Seiko Epson Corp | 半導体装置およびその製造方法 |
JP5396180B2 (ja) * | 2009-07-27 | 2014-01-22 | 東京エレクトロン株式会社 | 選択酸化処理方法、選択酸化処理装置およびコンピュータ読み取り可能な記憶媒体 |
US20130149852A1 (en) * | 2011-12-08 | 2013-06-13 | Tokyo Electron Limited | Method for forming a semiconductor device |
WO2013111212A1 (ja) * | 2012-01-24 | 2013-08-01 | キヤノンアネルバ株式会社 | 電子部品の製造方法及び電極構造 |
JP5953057B2 (ja) * | 2012-02-06 | 2016-07-13 | 東京エレクトロン株式会社 | プラズマ処理方法及びプラズマ処理装置 |
KR101913765B1 (ko) * | 2012-09-14 | 2018-12-28 | 삼성전자 주식회사 | 반도체 장치 및 그 제조 방법 |
JP6149634B2 (ja) * | 2013-09-17 | 2017-06-21 | 富士通セミコンダクター株式会社 | 半導体装置及びその製造方法 |
-
2016
- 2016-02-02 JP JP2016017680A patent/JP6590716B2/ja active Active
-
2017
- 2017-02-01 KR KR1020170014231A patent/KR101923808B1/ko active IP Right Grant
- 2017-02-02 US US15/423,460 patent/US10153169B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US10153169B2 (en) | 2018-12-11 |
JP2017139277A (ja) | 2017-08-10 |
KR20170092114A (ko) | 2017-08-10 |
KR101923808B1 (ko) | 2018-11-29 |
US20170221716A1 (en) | 2017-08-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6960813B2 (ja) | グラフェン構造体の形成方法および形成装置 | |
KR101020334B1 (ko) | 마이크로파 플라즈마 처리 장치 | |
JP4509864B2 (ja) | プラズマ処理方法およびプラズマ処理装置 | |
WO2019187987A1 (ja) | グラフェン構造体を形成する方法および装置 | |
KR100966927B1 (ko) | 절연막의 제조 방법 및 반도체 장치의 제조 방법 | |
JP2007042951A (ja) | プラズマ処理装置 | |
US20190237326A1 (en) | Selective film forming method and film forming apparatus | |
JP5096047B2 (ja) | マイクロ波プラズマ処理装置およびマイクロ波透過板 | |
JP7422540B2 (ja) | 成膜方法および成膜装置 | |
KR101681061B1 (ko) | 플라즈마 처리 방법 및 플라즈마 처리 장치 | |
JP6590716B2 (ja) | トランジスタの閾値制御方法および半導体装置の製造方法 | |
JP6671166B2 (ja) | 絶縁膜積層体の製造方法 | |
JP2020147839A (ja) | グラフェン構造体を形成する方法および装置 | |
WO2011007745A1 (ja) | マイクロ波プラズマ処理装置およびマイクロ波プラズマ処理方法 | |
JP2003303775A (ja) | プラズマ処理装置 | |
JP2008251959A (ja) | 絶縁層の形成方法及び半導体装置の製造方法 | |
JP2013033979A (ja) | マイクロ波プラズマ処理装置 | |
JP2011029250A (ja) | マイクロ波プラズマ処理装置およびマイクロ波プラズマ処理方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20180911 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20190410 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20190416 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20190527 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20190702 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20190801 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20190820 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20190917 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6590716 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |