JP5284276B2 - Cmos半導体装置およびその製造方法 - Google Patents
Cmos半導体装置およびその製造方法 Download PDFInfo
- Publication number
- JP5284276B2 JP5284276B2 JP2009544638A JP2009544638A JP5284276B2 JP 5284276 B2 JP5284276 B2 JP 5284276B2 JP 2009544638 A JP2009544638 A JP 2009544638A JP 2009544638 A JP2009544638 A JP 2009544638A JP 5284276 B2 JP5284276 B2 JP 5284276B2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- semiconductor device
- cmos semiconductor
- gate
- type mosfet
- 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 111
- 238000004519 manufacturing process Methods 0.000 title claims description 90
- 239000000758 substrate Substances 0.000 claims description 42
- 238000000034 method Methods 0.000 claims description 40
- 229910052751 metal Inorganic materials 0.000 claims description 38
- 239000002184 metal Substances 0.000 claims description 38
- 238000005530 etching Methods 0.000 claims description 32
- 239000007769 metal material Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 10
- 229910052735 hafnium Inorganic materials 0.000 claims description 4
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 230000005669 field effect Effects 0.000 claims 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical group [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 229910052746 lanthanum Inorganic materials 0.000 claims 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims 1
- 239000011777 magnesium Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 description 234
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 38
- 229910052718 tin Inorganic materials 0.000 description 38
- 230000015572 biosynthetic process Effects 0.000 description 35
- 239000000463 material Substances 0.000 description 33
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 23
- 229910021417 amorphous silicon Inorganic materials 0.000 description 18
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 14
- 229910052721 tungsten Inorganic materials 0.000 description 14
- 239000010937 tungsten Substances 0.000 description 14
- 238000004544 sputter deposition Methods 0.000 description 13
- 229910004129 HfSiO Inorganic materials 0.000 description 10
- 238000005204 segregation Methods 0.000 description 10
- 229920002120 photoresistant polymer Polymers 0.000 description 8
- 229910052814 silicon oxide Inorganic materials 0.000 description 7
- 229910004298 SiO 2 Inorganic materials 0.000 description 6
- 238000005229 chemical vapour deposition Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000001039 wet etching Methods 0.000 description 6
- 229910005883 NiSi Inorganic materials 0.000 description 5
- 238000004380 ashing Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 4
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 229910004200 TaSiN Inorganic materials 0.000 description 3
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 241000027294 Fusi Species 0.000 description 2
- 229910003855 HfAlO Inorganic materials 0.000 description 2
- 238000000231 atomic layer deposition Methods 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 238000005468 ion implantation Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910001425 magnesium ion Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910021340 platinum monosilicide Inorganic materials 0.000 description 2
- VLJQDHDVZJXNQL-UHFFFAOYSA-N 4-methyl-n-(oxomethylidene)benzenesulfonamide Chemical compound CC1=CC=C(S(=O)(=O)N=C=O)C=C1 VLJQDHDVZJXNQL-UHFFFAOYSA-N 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910019001 CoSi Inorganic materials 0.000 description 1
- 229910004166 TaN Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910021334 nickel silicide Inorganic materials 0.000 description 1
- RUFLMLWJRZAWLJ-UHFFFAOYSA-N nickel silicide Chemical compound [Ni]=[Si]=[Ni] RUFLMLWJRZAWLJ-UHFFFAOYSA-N 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 239000002356 single layer Substances 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
- 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
- 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
- H01L21/28158—Making the insulator
- H01L21/28167—Making the insulator on single crystalline silicon, e.g. using a liquid, i.e. chemical oxidation
- H01L21/28194—Making the insulator on single crystalline silicon, e.g. using a liquid, i.e. chemical oxidation by deposition, e.g. evaporation, ALD, CVD, sputtering, laser deposition
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
- H01L27/08—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including only semiconductor components of a single kind
- H01L27/085—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only
- H01L27/088—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate
- H01L27/092—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate complementary MIS field-effect transistors
-
- 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
- H01L29/4966—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
- H01L29/4975—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 being a silicide layer, e.g. TiSi2
-
- 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
- H01L29/511—Insulating materials associated therewith with a compositional variation, e.g. multilayer structures
- H01L29/513—Insulating materials associated therewith with a compositional variation, e.g. multilayer structures the variation being perpendicular to the channel plane
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
- Electrodes Of Semiconductors (AREA)
Description
これに対し、ハフニウム等のhigh−k材料(高誘電率材料)をゲート絶縁層に用い、ゲート絶縁層を一定の膜厚にしてリーク電流の発生を防止している。また、high−k材料をゲート電極に用いた場合、シリコンゲート電極との界面でフェルミレベルのピンニングが発生するため、ゲート電極材料として、多結晶シリコンに代えてニッケルシリサイド等の金属が使用されている。
例えば、high−k材料をゲート絶縁層に用いた場合、pチャネルMOSFETのメタルゲート電極にはNiSiが、nチャネルMOSFETのメタルゲート電極にはNi2Siが用いられる。
しかしながら、例えばNiSiとNi2Siのような材料の異なるゲート電極を、同一のエッチング工程で、即ち1種類のエッチングガスを用いた1回のエッチング工程で高精度に加工することは不可能であり、通常、電極の側壁がテーパ状になる場合がある。
一方、材料の異なる2つのゲート電極を別々のエッチング工程で加工する場合、ゲート長Lgが20nmのような微細構造では、エッチングマスクのマスク合わせが不可能である。
図1は、全体が100で表される、本実施の形態1にかかるCMOS半導体装置(相補型半導体装置)の断面図である。
CMOS半導体装置100は、n型MOSFET101と、p型MOSFET102とを含む。
n型MOSFET:W/TiN/MgO(又はLaO)/HfSiON/Si基板
p型MOSFET:W/TiN/AlO/HfSiON/Si基板
となる。
なお、第1、第2TiN層31、32は、製造工程においては必要であるが、最終製品には残存しない層である。従って、容易に形成でき、選択比が高く、かつ除去しやすい材料であることが好ましい。例えば、TiNの他に多結晶Siを使用しても構わない。
続いて、TaN層3の上に、低抵抗のタングステン層4を、例えばスパッタ法を用いて形成する。膜厚は例えば50nmである。
以上の工程で、図1Kに示すようなCMOS半導体装置100が形成される。
本実施の形態2にかかるCMOS半導体装置の製造方法を、図2A〜図2Cに示す。
かかる製造方法では、実施の形態1に示した図1A〜図1Fと同様の工程を行って、図2Aの構造を得る。
続いて、例えばCVD法やスパッタ法を用いて、タングステン層4を全面に形成する。
以上の工程で、図2Cに示すようなCMOS半導体装置150が形成される。
図3A〜図3Hに、本実施の形態3にかかるCMOS半導体装置の製造方法を示す。かかる製造方法は、以下の工程1〜8を含む。本製造方法は、実施の形態1の図1A〜1Kに示した製造方法において、SiN層33、34を形成しない方法となっている。図中、図1A〜1Kと同一符号は、同一または相当箇所を示す。
図4A〜図4Hに、本実施の形態4にかかるCMOS半導体装置の製造方法を示す。かかる製造方法は、以下の工程1〜8を含む。図中、図1A〜1Kと同一符号は、同一または相当箇所を示す。
かかる製造方法では、上述の工程5(図4E)を行った後に、アモルファスシリコン層40の上のMg偏析層46およびAl偏析層44のみをエッチングし、アモルファスシリコン層40は残す。
図6A〜図6Hに、本実施の形態5にかかるCMOS半導体装置の製造方法を示す。かかる製造方法は、以下の工程1〜8を含む。図中、図1A〜1Kと同一符号は、同一または相当箇所を示す。
図7A〜図7Fに、本実施の形態6にかかるCMOS半導体装置の製造方法を示す。かかる製造方法は、以下の工程1〜6を含む。図中、図1A〜1Kと同一符号は、同一または相当箇所を示す。
また、high−k材料の選択だけでは閾値電圧の制御が不十分な場合に、ゲート金属の材料を選択して、閾値電圧の調整が可能となる。
上述の実施の形態1〜6では、図9に示すように、n型MOSFETのゲート電極とp型MOSFETのゲート電極において、絶縁層には、例えばHfSiONからなる共通High−k材料を用い、キャップ層には、例えばLaOやMgOからなるnCapと、例えばAlOからなるpCapのように異なる材料を用いた。これにより、閾値電圧の正確な制御を行っていた。
また、キャップ層の上に形成される金属層(Metal)は、双方のゲート電極で同一材料とした。
n型MOSFET:W/TiN/HfMgO/Si基板
p型MOSFET:W/TiN/HfAlO/Si基板
のようなスタック構造となる。
図9の構造との違いは、ゲート絶縁層が、二層構造か一層構造という点である。
n型MOSFET:W/TiN/MgO/AlO/HfSiON/Si基板
p型MOSFET:W/TiN/AlO/MgO/HfSiON/Si基板
のように、キャップ層を2層構造としても構わない。AlOとMgOの上下を入れ替えることも可能である。
n型MOSFET:W/TiN/MgO/HfSiON/Si基板
p型MOSFET:W/TiN/ /HfSiON/Si基板
のようなスタック構造となる。
n型MOSFET:W/TiN/HfSiON/MgO/SiO2(SiON)/Si基板
p型MOSFET:W/TiN/HfSiON/AlO/SiO2(SiON)/Si基板
のように、Si基板の上にSiO2あるいはSiONを設け、その上にキャップ層を設け、更にその上にHfSiON等のhigh−k材料からなる絶縁層が設けられている。
図10Aのように、ゲート金属が共に多結晶シリコンの状態で、ゲート電極のエッチングを行った後、多結晶シリコンをNiやPtと反応させて、最終構造が図10Bのようになっても構わない。
従って、図10A、図10Bに示すように、ゲート金属のエッチング後に、n型MOSFETとp型MOSFETのゲート金属の材料が異なるようになっても構わない。
例えば、ゲート電極のエッチング時のスタックが、
n型MOSFET:Poly−Si/MgO/HfSiO/Si基板
p型MOSFET:Poly−Si/AlO/HfSiO/Si基板
であり、
最終構造のスタックが、
n型MOSFET:FUSI/NiSi/MgO/HfSiO/Si基板
p型MOSFET:FUSI−PtSi/AlO/HfSiO/Si基板
となる。
図11は、本実施の形態9にかかるCMOS半導体装置の概略図である。
かかるCMOSFETでは、n型CMOSFETのゲート電極に、
n型MOSFET1:Poly−SI/TiN/LaO/HfSiO/Si基板
n型MOSFET2:Poly−SI/TiN/ HfSiO/Si基板
n型MOSFET3:Poly−SI/TiN/AlO/HfSiO/Si基板
の3種類の構造を用いる。なお、図11では、Si基板の表面にSiO2膜も記載してあるが、無くても構わない。
p型MOSFET1:Poly−SI/TiN/LaO/HfSiO/Si基板
p型MOSFET2:Poly−SI/TiN/ HfSiO/Si基板
p型MOSFET3:Poly−SI/TiN/AlO/HfSiO/Si基板
の3種類の構造を用いる。
また、閾値電圧のシフト量の異なるゲート電極がn型、p型MOSFETにそれぞれ3種類ずつ形成することができる。従って、これらに6種類のゲート電極を組み合わせることにより、閾値電圧の異なる複数のMOSFETを含む集積型CMOS半導体装置の作製が可能となる。
Claims (5)
- p型電界効果トランジスタからなる第1トランジスタと、n型電界効果トランジスタからなる第2トランジスタとを有するCMOS半導体装置の製造方法であって、
第1トランジスタは、半導体基板の第1部分の上に形成された第1ゲート絶縁膜と、第1ゲート絶縁膜の上に形成された第1ゲート電極とを含み、
第2トランジスタは、半導体基板の第2部分の上に形成された第2ゲート絶縁膜と、第2ゲート絶縁膜の上に形成された第2ゲート電極とを含み、
第1ゲート電極と第2ゲート電極は、同じ金属材料の金属層を有し、
この製造方法は、
半導体基板の少なくとも第1部分と第2部分の上に、ハフニウムを含む絶縁膜を形成する工程と、
絶縁膜の第3部分の上に、ハフニウムとは異なる第1元素を有する第1キャップ層を形成する工程と、
絶縁膜の第4部分の上に、第1元素およびハフニウムとは異なる第2元素を有する第2キャップ層を形成する工程と、
熱処理により、絶縁膜を、第3部分および第4部分の第1キャップ層および第2キャップ層とそれぞれ反応させて、第1ゲート絶縁膜および第2ゲート絶縁膜を形成する工程と、
半導体基板の上に、ゲート金属材料層を形成する工程と、
同一エッチング工程で、ゲート金属材料層をエッチングして、n型電界効果トランジスタとp型電界効果トランジスタの各ゲート電極を形成する工程と、を含むことを特徴とするCMOS半導体装置の製造方法。 - 第1キャップ層と第2キャップ層の双方が酸素を有し、第1元素がアルミニウムで、第2元素がマグネシウムまたはランタンであることを特徴とする請求項1に記載のCMOS半導体装置の製造方法。
- 第2キャップ層を形成する工程は、第1キャップを形成する工程の後に行われることを特徴とする請求項2に記載のCMOS半導体装置の製造方法。
- 第1ゲート電極と第2ゲート電極はそれぞれ窒化チタンを有することを特徴とする請求項2に記載のCMOS半導体装置の製造方法。
- 第1キャップ層は、絶縁膜の第3部分に直接接続するように形成され、第2キャップ層は、絶縁膜の第4部分に直接接続するように形成されたことを特徴とする請求項1に記載のCMOS半導体装置の製造方法。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009544638A JP5284276B2 (ja) | 2007-12-03 | 2008-11-26 | Cmos半導体装置およびその製造方法 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007312010 | 2007-12-03 | ||
JP2007312010 | 2007-12-03 | ||
JP2009544638A JP5284276B2 (ja) | 2007-12-03 | 2008-11-26 | Cmos半導体装置およびその製造方法 |
PCT/JP2008/071392 WO2009072421A1 (ja) | 2007-12-03 | 2008-11-26 | Cmos半導体装置およびその製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2009072421A1 JPWO2009072421A1 (ja) | 2011-04-21 |
JP5284276B2 true JP5284276B2 (ja) | 2013-09-11 |
Family
ID=40717603
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009544638A Active JP5284276B2 (ja) | 2007-12-03 | 2008-11-26 | Cmos半導体装置およびその製造方法 |
Country Status (5)
Country | Link |
---|---|
US (2) | US20100258878A1 (ja) |
JP (1) | JP5284276B2 (ja) |
CN (1) | CN101884101B (ja) |
TW (1) | TWI492367B (ja) |
WO (1) | WO2009072421A1 (ja) |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7994036B2 (en) * | 2008-07-01 | 2011-08-09 | Panasonic Corporation | Semiconductor device and fabrication method for the same |
JP5314964B2 (ja) * | 2008-08-13 | 2013-10-16 | ルネサスエレクトロニクス株式会社 | 半導体装置の製造方法 |
US8120126B2 (en) * | 2009-03-02 | 2012-02-21 | Qualcomm Incorporated | Magnetic tunnel junction device and fabrication |
JP5329294B2 (ja) * | 2009-04-30 | 2013-10-30 | ルネサスエレクトロニクス株式会社 | 半導体装置の製造方法 |
JP2011003664A (ja) * | 2009-06-17 | 2011-01-06 | Renesas Electronics Corp | 半導体装置およびその製造方法 |
JP5375362B2 (ja) * | 2009-06-24 | 2013-12-25 | 富士通セミコンダクター株式会社 | 半導体装置の製造方法 |
JP5372617B2 (ja) * | 2009-06-24 | 2013-12-18 | ルネサスエレクトロニクス株式会社 | 半導体装置の製造方法 |
JP2011009313A (ja) * | 2009-06-24 | 2011-01-13 | Panasonic Corp | 半導体装置及びその製造方法 |
CN101930979B (zh) | 2009-06-26 | 2014-07-02 | 中国科学院微电子研究所 | 控制器件阈值电压的CMOSFETs结构及其制造方法 |
DE102009031155B4 (de) * | 2009-06-30 | 2012-02-23 | GLOBALFOUNDRIES Dresden Module One Ltd. Liability Company & Co. KG | Einstellen einer Schwellwertspannung für komplexe Transistoren durch Diffundieren einer Metallsorte in das Gatedielektrikum vor der Gatestrukturierung |
JP2011029483A (ja) * | 2009-07-28 | 2011-02-10 | Renesas Electronics Corp | 半導体装置およびその製造方法 |
JP5407645B2 (ja) * | 2009-08-04 | 2014-02-05 | 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 |
US8114739B2 (en) * | 2009-09-28 | 2012-02-14 | Freescale Semiconductor, Inc. | Semiconductor device with oxygen-diffusion barrier layer and method for fabricating same |
TWI488240B (zh) * | 2009-09-28 | 2015-06-11 | United Microelectronics Corp | 半導體元件的製造方法 |
JP5401244B2 (ja) * | 2009-10-01 | 2014-01-29 | ルネサスエレクトロニクス株式会社 | 半導体装置の製造方法 |
US8304836B2 (en) | 2009-11-17 | 2012-11-06 | International Business Machines Corporation | Structure and method to obtain EOT scaled dielectric stacks |
KR101656444B1 (ko) | 2010-01-25 | 2016-09-09 | 삼성전자주식회사 | 상보형 mos 트랜지스터, 상기 상보형 mos 트랜지스터를 포함하는 반도체 장치, 및 상기 반도체 장치를 포함하는 반도체 모듈 |
WO2011101931A1 (ja) * | 2010-02-17 | 2011-08-25 | パナソニック株式会社 | 半導体装置及びその製造方法 |
KR101131891B1 (ko) * | 2010-07-30 | 2012-04-03 | 주식회사 하이닉스반도체 | 매립게이트를 구비한 반도체 장치 제조방법 |
JP2012204652A (ja) * | 2011-03-25 | 2012-10-22 | Toshiba Corp | 半導体装置の製造方法 |
US8440520B2 (en) | 2011-08-23 | 2013-05-14 | Tokyo Electron Limited | Diffused cap layers for modifying high-k gate dielectrics and interface layers |
US8633118B2 (en) | 2012-02-01 | 2014-01-21 | Tokyo Electron Limited | Method of forming thin metal and semi-metal layers by thermal remote oxygen scavenging |
US8865538B2 (en) | 2012-03-30 | 2014-10-21 | Tokyo Electron Limited | Method of integrating buried threshold voltage adjustment layers for CMOS processing |
US8865581B2 (en) | 2012-10-19 | 2014-10-21 | Tokyo Electron Limited | Hybrid gate last integration scheme for multi-layer high-k gate stacks |
KR102066851B1 (ko) | 2013-02-25 | 2020-02-11 | 삼성전자 주식회사 | 반도체 장치 및 그 제조 방법 |
US10431583B2 (en) | 2016-02-11 | 2019-10-01 | Samsung Electronics Co., Ltd. | Semiconductor device including transistors with adjusted threshold voltages |
US10128347B2 (en) * | 2017-01-04 | 2018-11-13 | International Business Machines Corporation | Gate-all-around field effect transistor having multiple threshold voltages |
KR102495258B1 (ko) | 2018-04-24 | 2023-02-03 | 삼성전자주식회사 | 반도체 장치 |
US10692734B2 (en) * | 2018-10-25 | 2020-06-23 | Applied Materials, Inc. | Methods of patterning nickel silicide layers on a semiconductor device |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002280461A (ja) * | 2001-03-22 | 2002-09-27 | Mitsubishi Electric Corp | 半導体装置及び半導体装置の製造方法 |
WO2005114718A1 (en) * | 2004-05-12 | 2005-12-01 | Freescale Semiconductor, Inc. | Semiconductor process and integrated circuit having dual metal oxide gate dielectric with single metal gate electrode |
JP2006024594A (ja) * | 2004-07-06 | 2006-01-26 | Nec Corp | 半導体装置およびその製造方法 |
WO2006012311A1 (en) * | 2004-06-30 | 2006-02-02 | Intel Corporation | Using different gate dielectrics with nmos and pmos transistors of a complementary metal oxide semiconductor integrated circuit |
WO2006028577A2 (en) * | 2004-07-28 | 2006-03-16 | Intel Corporation | Using different gate dielectrics with nmos and pmos transistors of a complementary metal oxide semiconductor integrated circuit |
JP2006222385A (ja) * | 2005-02-14 | 2006-08-24 | Toshiba Corp | Cmos半導体装置 |
JP2007080913A (ja) * | 2005-09-12 | 2007-03-29 | Fujitsu Ltd | 半導体装置およびその製造方法 |
JP2007243009A (ja) * | 2006-03-10 | 2007-09-20 | Renesas Technology Corp | 半導体装置およびその製造方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100399356B1 (ko) | 2001-04-11 | 2003-09-26 | 삼성전자주식회사 | 듀얼 게이트를 가지는 씨모스형 반도체 장치 형성 방법 |
US7592678B2 (en) * | 2004-06-17 | 2009-09-22 | Infineon Technologies Ag | CMOS transistors with dual high-k gate dielectric and methods of manufacture thereof |
KR100653721B1 (ko) * | 2005-06-30 | 2006-12-05 | 삼성전자주식회사 | 질소주입활성영역을 갖는 반도체소자 및 그 제조방법 |
US7807522B2 (en) * | 2006-12-28 | 2010-10-05 | Texas Instruments Incorporated | Lanthanide series metal implant to control work function of metal gate electrodes |
JP4406439B2 (ja) * | 2007-03-29 | 2010-01-27 | 株式会社東芝 | 半導体装置の製造方法 |
JP2008306051A (ja) * | 2007-06-08 | 2008-12-18 | Rohm Co Ltd | 半導体装置およびその製造方法 |
-
2008
- 2008-11-17 TW TW097144308A patent/TWI492367B/zh active
- 2008-11-26 JP JP2009544638A patent/JP5284276B2/ja active Active
- 2008-11-26 CN CN200880119004.4A patent/CN101884101B/zh active Active
- 2008-11-26 US US12/745,638 patent/US20100258878A1/en not_active Abandoned
- 2008-11-26 WO PCT/JP2008/071392 patent/WO2009072421A1/ja active Application Filing
-
2012
- 2012-08-06 US US13/567,869 patent/US8698249B2/en active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002280461A (ja) * | 2001-03-22 | 2002-09-27 | Mitsubishi Electric Corp | 半導体装置及び半導体装置の製造方法 |
WO2005114718A1 (en) * | 2004-05-12 | 2005-12-01 | Freescale Semiconductor, Inc. | Semiconductor process and integrated circuit having dual metal oxide gate dielectric with single metal gate electrode |
WO2006012311A1 (en) * | 2004-06-30 | 2006-02-02 | Intel Corporation | Using different gate dielectrics with nmos and pmos transistors of a complementary metal oxide semiconductor integrated circuit |
JP2006024594A (ja) * | 2004-07-06 | 2006-01-26 | Nec Corp | 半導体装置およびその製造方法 |
WO2006028577A2 (en) * | 2004-07-28 | 2006-03-16 | Intel Corporation | Using different gate dielectrics with nmos and pmos transistors of a complementary metal oxide semiconductor integrated circuit |
JP2006222385A (ja) * | 2005-02-14 | 2006-08-24 | Toshiba Corp | Cmos半導体装置 |
JP2007080913A (ja) * | 2005-09-12 | 2007-03-29 | Fujitsu Ltd | 半導体装置およびその製造方法 |
JP2007243009A (ja) * | 2006-03-10 | 2007-09-20 | Renesas Technology Corp | 半導体装置およびその製造方法 |
Non-Patent Citations (2)
Title |
---|
JPN6012049566; Wang, X.P.: 'Tuning effective metal gate work function by a novel gate dielectric HfLaO for nMOSFETs' Electron Device Letters, IEEE VOL.27,NO.1, 200601, 31-33 * |
JPN6012049567; von Haartman, M.: 'Comprehensive study on low-frequency noise and mobility in Si and SiGe pMOSFETs with high-kappa gate di' Electron Devices, IEEE Transactions on VOL.53, NO.4, 200604, 836-843 * |
Also Published As
Publication number | Publication date |
---|---|
US20130034953A1 (en) | 2013-02-07 |
US20100258878A1 (en) | 2010-10-14 |
JPWO2009072421A1 (ja) | 2011-04-21 |
WO2009072421A1 (ja) | 2009-06-11 |
TW200935589A (en) | 2009-08-16 |
CN101884101B (zh) | 2017-06-13 |
US8698249B2 (en) | 2014-04-15 |
CN101884101A (zh) | 2010-11-10 |
TWI492367B (zh) | 2015-07-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5284276B2 (ja) | Cmos半導体装置およびその製造方法 | |
JP5297869B2 (ja) | 二重仕事関数半導体デバイスの製造方法及びそのデバイス | |
US7989898B2 (en) | Method for fabricating a dual workfunction semiconductor device and the device made thereof | |
US8143676B2 (en) | Semiconductor device having a high-dielectric-constant gate insulating film | |
US20160365289A1 (en) | Method for Manufacturing A Dual Work Function Semiconductor Device and the Semiconductor Device Made Thereof | |
US20080096383A1 (en) | Method of manufacturing a semiconductor device with multiple dielectrics | |
CN102856255B (zh) | 具有金属栅极的半导体元件及其制作方法 | |
JP2009135419A (ja) | 半導体装置及びその製造方法 | |
JP2009194352A (ja) | 半導体装置の製造方法 | |
US20060237788A1 (en) | Semiconductor device and its fabrication method | |
JP2010177240A (ja) | 半導体装置及びその製造方法 | |
JP4492589B2 (ja) | 半導体装置の製造方法 | |
JP2009267180A (ja) | 半導体装置 | |
JP2007201063A (ja) | 半導体装置及びその製造方法 | |
JP2010272596A (ja) | 半導体装置の製造方法 | |
US7696585B2 (en) | Semiconductor device and manufacturing method of semiconductor device | |
JP2005228761A (ja) | 半導体装置及びその製造方法 | |
JP2007287793A (ja) | 半導体装置の製造方法 | |
JP2008218876A (ja) | Mis型半導体装置の製造方法およびmis型半導体装置 | |
JP5374947B2 (ja) | 半導体装置およびその製造方法 | |
JP2006278873A (ja) | 半導体装置およびその製造方法 | |
JP4011014B2 (ja) | 半導体装置およびその製造方法 | |
US20090206417A1 (en) | Semiconductor device and method for fabricating the same | |
JP2010010507A (ja) | 半導体装置およびその製造方法 | |
TWI488240B (zh) | 半導體元件的製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20121002 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20121203 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20130129 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20130426 |
|
A911 | Transfer to examiner for re-examination before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A911 Effective date: 20130507 |
|
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: 20130528 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20130529 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 5284276 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |