WO2004090991A1 - 半導体装置及びその製造方法 - Google Patents
半導体装置及びその製造方法 Download PDFInfo
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- WO2004090991A1 WO2004090991A1 PCT/JP2004/004700 JP2004004700W WO2004090991A1 WO 2004090991 A1 WO2004090991 A1 WO 2004090991A1 JP 2004004700 W JP2004004700 W JP 2004004700W WO 2004090991 A1 WO2004090991 A1 WO 2004090991A1
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- Prior art keywords
- semiconductor device
- insulating film
- gate insulating
- film
- silicon substrate
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000008569 process Effects 0.000 title abstract description 3
- 239000000758 substrate Substances 0.000 claims abstract description 42
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 41
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000010703 silicon Substances 0.000 claims abstract description 40
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 238000005121 nitriding Methods 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 18
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 claims description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 8
- 239000013078 crystal Substances 0.000 claims description 8
- 238000005268 plasma chemical vapour deposition Methods 0.000 claims description 8
- 229910052693 Europium Inorganic materials 0.000 claims description 6
- 229910052684 Cerium Inorganic materials 0.000 claims description 4
- 229910052779 Neodymium Inorganic materials 0.000 claims description 4
- 229910052777 Praseodymium Inorganic materials 0.000 claims description 4
- 229910052772 Samarium Inorganic materials 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 claims description 3
- 229910052746 lanthanum Inorganic materials 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 5
- 150000004767 nitrides Chemical class 0.000 abstract description 5
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 230000001747 exhibiting effect Effects 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 230000002459 sustained effect Effects 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 12
- 239000007789 gas Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
- 229920005591 polysilicon Polymers 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 150000002831 nitrogen free-radicals Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
Classifications
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- 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
- H01L29/518—Insulating materials associated therewith the insulating material containing nitrogen, e.g. nitride, oxynitride, nitrogen-doped material
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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
- H01L21/02—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
- H01L21/28202—Making the insulator on single crystalline silicon, e.g. using a liquid, i.e. chemical oxidation in a nitrogen-containing ambient, e.g. nitride deposition, growth, oxynitridation, NH3 nitridation, N2O oxidation, thermal nitridation, RTN, plasma nitridation, RPN
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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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
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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
- H01L21/02—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
- H01L21/02123—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 silicon
- H01L21/0217—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 silicon the material being a silicon nitride not containing oxygen, e.g. SixNy or SixByNz
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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
- H01L21/02—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
- H01L21/02247—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 nitridation, e.g. nitridation of the substrate
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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
- H01L21/02—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
- H01L21/02252—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 plasma treatment, e.g. plasma oxidation of the substrate
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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
- H01L21/02—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
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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
- H01L21/02—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
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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
- H01L21/02—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
- H01L21/314—Inorganic layers
- H01L21/318—Inorganic layers composed of nitrides
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- 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
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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
- H01L21/02—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
- H01L21/0226—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process
- H01L21/02263—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase
- H01L21/02271—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition
- H01L21/0228—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition deposition by cyclic CVD, e.g. ALD, ALE, pulsed CVD
Definitions
- the present invention relates to an improvement in semiconductor packaging using a high dielectric constant (high-k) film as a gate insulating film.
- polysilicon has been the mainstream electrode material formed on a silicon substrate.
- silicon oxide Sio 2
- silicon oxynitride Si ON
- silicon nitride Si 3 N 4
- E Zd the gate insulating film
- Japanese Patent Application Laid-Open No. 2000-294550 discloses a method of directly oxidizing, nitriding, or oxynitriding the surface of the wafer W using plasma to form an insulating film having an equivalent oxide film thickness of 1 nm or less. Have been.
- the conventional High-K film is formed of an oxide, an oxidizing species always exists when the oxide is formed.
- a high-temperature heat treatment step is required in an atmosphere of an oxidizing species or an inert gas species.
- Si 0 2 (or a mixture of Si, O, and the metal that composes High-K) is formed on the surface of Si or on the surface of the oxide High_K film, Films with low capacitance are formed in series, and the original purpose of increasing the capacity cannot be achieved.
- the present invention has been made in view of the above situation, and has as its object to provide a semiconductor device having good characteristics by maintaining a high dielectric constant of a High-K insulating film. And It is another object of the present invention to provide a method for manufacturing a semiconductor device capable of maintaining a high dielectric constant of a High- ⁇ insulating film in a high state.
- a semiconductor device comprises a silicon substrate; a gate electrode layer; and a gate insulating film disposed between the silicon substrate and the gate electrode layer.
- the gate insulating film is a high dielectric constant (high-k) film formed by nitriding a mixture of metal and silicon. That is, by the H IgH _ K film itself nitride, it is possible to prevent the occurrence of S i 0 2.
- the gate insulating film is formed by a plasma CVD technique. Further, when a silicon nitride film is disposed as a barrier layer between the silicon substrate and the gate insulating film, the film thickness hardly increases during the formation of the high-k material, and the capacity reduction is suppressed. it can. This is based on the fact that the silicon nitride film is less likely to increase in thickness than the oxide film.
- the silicon nitride film can be formed by a direct nitriding technique using plasma.
- a more stable insulating film can be obtained by forming a multilayer structure in which silicon nitride films and the gut insulating films are alternately formed on the silicon substrate.
- an alumina (A 1 2 0 3) single crystal By forming a film, the dielectric constant of one buffer layer can be raised to about 9, so that the capacity can be further increased.
- the alumina single crystal film can be formed by a plasma CVD technique.
- the above-mentioned gate insulating film may have a composition selected from the following:
- FIG. 1 is a schematic view (cross-sectional view) showing an example of the configuration of the plasma processing apparatus according to the present invention.
- FIG. 2 is a sectional view showing the structure of the semiconductor device according to the present invention.
- FIG. 3 is a schematic diagram showing a structure of a main part of the semiconductor device according to the first embodiment of the present invention.
- FIG. 4 is a schematic diagram showing a structure of a main part of a semiconductor device according to a second embodiment of the present invention.
- FIG. 5 is a schematic diagram showing a structure of a main part of a semiconductor device according to a third embodiment of the present invention.
- FIG. 6 is a schematic diagram showing a structure of a main part of a semiconductor device according to a fourth embodiment of the present invention.
- FIG. 7 is a schematic diagram showing a structure of a main part of a semiconductor device according to a fifth embodiment of the present invention.
- FIG. 8 is a schematic diagram showing a structure of a main part of a semiconductor device according to a sixth embodiment of the present invention. Mode of discretion for carrying out the invention
- FIG. 1 shows an example of a schematic configuration of a plasma processing apparatus 10 used in the present invention.
- the plasma processing apparatus 10 has a processing container 11 provided with a substrate holding table 12 for holding a silicon wafer W as a substrate to be processed.
- the gas (gas) in the processing container 11 is exhausted from the exhaust ports MIA and 11B via an exhaust pump, not shown.
- the substrate holder 12 has a heater function of heating the silicon wafer W.
- a gas baffle plate (partition plate) 26 made of aluminum is arranged around the substrate holding table 12. Quartz or SiC cover 28 is provided on the upper surface of gas paffle plate 26.
- a planar antenna 14 is disposed above the dielectric plate 13 (outside the processing vessel 11).
- the planar antenna 14 is formed with a plurality of slots for transmitting electromagnetic waves supplied from the waveguide.
- a wavelength shortening plate 15 and a waveguide 18 are arranged.
- the cooling plate 16 is arranged outside the processing vessel 11 so as to cover the upper part of the wavelength shortening plate 15. Inside the cooling plate 16, a refrigerant passage 16a through which the refrigerant flows is provided.
- a gas supply port 22 for introducing a gas during plasma processing is provided on the inner side wall of the processing container 11.
- the gas supply port 22 may be provided for each gas to be introduced.
- a mass flow controller (not shown) is provided for each supply port as flow rate adjusting means.
- the gas to be introduced may be mixed and sent in advance, and the supply port 22 may be a single nozzle.
- ⁇ is not shown, the flow rate of the introduced gas is adjusted by a flow control valve or the like in the mixing stage.
- a coolant channel 24 is formed inside the inner wall of the processing container 11 so as to surround the entire container.
- the plasma substrate processing apparatus 10 used in the present invention is provided with an electromagnetic wave generator (not shown) that generates several gigahertz electromagnetic waves for exciting plasma.
- the microwave generated by this electromagnetic wave generator propagates through the waveguide 15 and enters the processing vessel 11 be introduced.
- FIG. 2 is a cross-sectional view illustrating a structure of a semiconductor device (MIS FET) according to the present invention.
- the present invention relates to the composition and structure of the gate insulating film 50, and each embodiment will be described later in detail.
- 100 is a silicon substrate; 50 is a gate insulating film; 52 is a gate electrode; 54 is a source / drain layer (diffusion layer);
- FIGS. Each figure generally corresponds to the broken line in FIG.
- FIG. 3 is a schematic diagram showing a structure of a main part of the semiconductor device according to the first embodiment of the present invention.
- a nitride-based high-K film 104 is formed on a silicon substrate 100 as a gut insulating film (50).
- a silicon nitride film (Si 3 N 4 layer) 102 is formed between the silicon substrate 100 and the high-K film 104.
- Tal ⁇ O 6 as a gate electrode (52) is formed by sputtering.
- the High_K film 104 is formed by a plasma CVD technique using the plasma processing apparatus 10 described above.
- the silicon nitride film 102 is formed by direct radical nitridation using the same plasma processing apparatus 10 and plays a role in lowering the interface state on the surface of the silicon substrate 100.
- the following yarn can be used:
- a silicon substrate 100 to be processed is first processed by a processing saw 1 Introduce within 1, Set it on the substrate holder 1 2. Thereafter, the air inside the processing vessel 11 is exhausted through the exhaust ports 11A and 1IB, and the inside of the processing vessel 11 is set to a predetermined processing pressure. Next, nitrogen gas and an inert gas are introduced into the processing container 11 from the gas supply port 22.
- the microwave having a frequency of several GHz generated by the electromagnetic wave generator is supplied to the processing container 11 through the waveguide 15.
- This microwave is introduced into the processing container 11 via the planar antenna 14 and the dielectric plate 13.
- the microwaves excite the plasma and produce nitrogen radicals.
- the wafer temperature at the time of the plasma processing generated in this way is 500 ° C. or less.
- the high-density plasma generated by the microwave excitation in the processing chamber 11 forms a nitride film Si 3 N 4 on the surface of the silicon substrate 100.
- FIG. 4 is a schematic diagram showing a structure of a main part of a semiconductor device according to a second embodiment of the present invention.
- the same or corresponding components as those in FIG. 3 are denoted by the same reference numerals, and redundant description will be omitted.
- a Si 3 N 4 layer 102 a is formed between the high-K film 104 and the silicon substrate 100.
- Si 3 Njfl 102 b is formed between the High-K film 104 and the TAN layer 106. Thereby, the reactivity with the gate electrode ( ⁇ 06) is suppressed, and a stable film can be formed.
- FIG. 5 is a schematic diagram showing a structure of a main part of a semiconductor device according to a third embodiment of the present invention.
- the same or corresponding components as those in FIGS. 3 and 4 are denoted by the same reference numerals, and redundant description will be omitted.
- a high-K film 104 is formed between the above-described silicon substrate 100 and the good electrode layer (TaN layer).
- No other layer such as a Si 3 N 4 layer is formed between the K film 104 and the High-K film and the TAN layer 106.
- FIG. 6 is a schematic diagram showing a structure of a main part of a semiconductor device according to a fourth embodiment of the present invention. In FIG.
- a buffer layer 110 is formed between the above-described silicon substrate 100 and High-KH104. Note that another layer such as a Si 3 N 4 layer should not be formed between the High K film and the TaN layer 106! / ,.
- the buffer layer 110 is formed by changing the gas composition supplied into the processing container 11 in the same process as the formation of the high-K film 104.
- the buffer layer 110 has a merit that the dielectric constant is higher than that of the Si 3 N 4 layer and the interface state can be lowered.
- FIG. 7 is a schematic diagram showing a structure of a main part of a semiconductor device according to a fifth embodiment of the present invention.
- the same or corresponding components as those in FIGS. 3 to 6 are denoted by the same reference numerals, and duplicate description is omitted.
- the structure of this embodiment is such that, on a silicon substrate 100, three Si 3 N 4 layers 102a, 102b, 102c and two high-K films 104a, 104b are alternately laminated. are doing. Thereby, a more stable insulating film can be obtained. '
- FIG. 8 is a schematic diagram showing a structure of a main part of a semiconductor device according to a sixth embodiment of the present invention.
- the same or corresponding components as those in FIGS. 3 to 6 are denoted by the same reference numerals, and redundant description will be omitted.
- alumina dielectric constant higher than N 4 (A 1 2 0 3 ) single-crystal film 114 between the silicon substrate 100 and the H igh- K film 104 to form a S i 3 alumina dielectric constant higher than N 4 (A 1 2 0 3 ) single-crystal film 114 .
- Alumina (A 1 2 0 3) single-crystal film 1 14 using the apparatus shown in FIG. 1, leaving at be formed by a plasma CVD technique.
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- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
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- Formation Of Insulating Films (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US10/551,843 US7521324B2 (en) | 2003-04-03 | 2004-03-31 | Semiconductor device and method for manufacturing the same |
EP04724878A EP1617483A4 (en) | 2003-04-03 | 2004-03-31 | SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE SAME |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2003-100170 | 2003-04-03 | ||
JP2003100170A JP4536333B2 (ja) | 2003-04-03 | 2003-04-03 | 半導体装置及び、その製造方法 |
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WO2004090991A1 true WO2004090991A1 (ja) | 2004-10-21 |
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PCT/JP2004/004700 WO2004090991A1 (ja) | 2003-04-03 | 2004-03-31 | 半導体装置及びその製造方法 |
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US (1) | US7521324B2 (ja) |
EP (1) | EP1617483A4 (ja) |
JP (1) | JP4536333B2 (ja) |
KR (1) | KR100721733B1 (ja) |
CN (1) | CN1768431A (ja) |
TW (1) | TWI241624B (ja) |
WO (1) | WO2004090991A1 (ja) |
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- 2004-03-31 EP EP04724878A patent/EP1617483A4/en not_active Withdrawn
- 2004-03-31 CN CNA2004800092099A patent/CN1768431A/zh active Pending
- 2004-03-31 WO PCT/JP2004/004700 patent/WO2004090991A1/ja active Application Filing
- 2004-03-31 US US10/551,843 patent/US7521324B2/en not_active Expired - Fee Related
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JP2013127061A (ja) * | 2011-11-15 | 2013-06-27 | Mitsubishi Chemicals Corp | 窒化物蛍光体とその製造方法 |
JP2013127060A (ja) * | 2011-11-15 | 2013-06-27 | Mitsubishi Chemicals Corp | 水分吸着した窒化物蛍光体とその製造方法 |
Also Published As
Publication number | Publication date |
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JP4536333B2 (ja) | 2010-09-01 |
US7521324B2 (en) | 2009-04-21 |
TW200509183A (en) | 2005-03-01 |
TWI241624B (en) | 2005-10-11 |
KR20050116840A (ko) | 2005-12-13 |
EP1617483A4 (en) | 2008-03-05 |
JP2004311562A (ja) | 2004-11-04 |
KR100721733B1 (ko) | 2007-05-28 |
CN1768431A (zh) | 2006-05-03 |
US20070052042A1 (en) | 2007-03-08 |
EP1617483A1 (en) | 2006-01-18 |
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