JP7251616B2 - 半導体装置および製造方法 - Google Patents
半導体装置および製造方法 Download PDFInfo
- Publication number
- JP7251616B2 JP7251616B2 JP2021515833A JP2021515833A JP7251616B2 JP 7251616 B2 JP7251616 B2 JP 7251616B2 JP 2021515833 A JP2021515833 A JP 2021515833A JP 2021515833 A JP2021515833 A JP 2021515833A JP 7251616 B2 JP7251616 B2 JP 7251616B2
- Authority
- JP
- Japan
- Prior art keywords
- semiconductor substrate
- oxygen concentration
- region
- semiconductor device
- peak
- 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 312
- 238000004519 manufacturing process Methods 0.000 title claims description 18
- 239000000758 substrate Substances 0.000 claims description 277
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 209
- 239000001301 oxygen Substances 0.000 claims description 209
- 229910052760 oxygen Inorganic materials 0.000 claims description 209
- 238000009826 distribution Methods 0.000 claims description 75
- 238000000137 annealing Methods 0.000 claims description 53
- 230000007547 defect Effects 0.000 claims description 28
- 239000013078 crystal Substances 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 21
- 239000007787 solid Substances 0.000 claims description 17
- 230000007423 decrease Effects 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000011229 interlayer Substances 0.000 description 16
- 230000002093 peripheral effect Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 11
- 239000001307 helium Substances 0.000 description 11
- 229910052734 helium Inorganic materials 0.000 description 11
- 238000009825 accumulation Methods 0.000 description 9
- 239000000969 carrier Substances 0.000 description 8
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 7
- -1 helium ions Chemical class 0.000 description 7
- 150000002500 ions Chemical class 0.000 description 7
- 239000012535 impurity Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 239000000370 acceptor Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 4
- 229920005591 polysilicon Polymers 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000002019 doping agent Substances 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 230000001678 irradiating effect Effects 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005215 recombination Methods 0.000 description 2
- 230000006798 recombination Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000005368 silicate glass Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 150000003609 titanium compounds Chemical class 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Images
Classifications
-
- 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
- H01L29/86—Types of semiconductor device ; Multistep manufacturing processes therefor controllable only by variation of the electric current supplied, or only the electric potential applied, to one or more of the electrodes carrying the current to be rectified, amplified, oscillated or switched
- H01L29/861—Diodes
- H01L29/8613—Mesa PN junction diodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/0603—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions
-
- 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
- H01L21/322—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to modify their internal properties, e.g. to produce internal imperfections
- H01L21/3221—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to modify their internal properties, e.g. to produce internal imperfections of silicon bodies, e.g. for gettering
-
- 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
- H01L21/324—Thermal treatment for modifying the properties of semiconductor bodies, e.g. annealing, sintering
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/12—Mountings, e.g. non-detachable insulating substrates
- H01L23/14—Mountings, e.g. non-detachable insulating substrates characterised by the material or its electrical properties
-
- 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
- H01L27/06—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 a plurality of individual components in a non-repetitive configuration
- H01L27/07—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 a plurality of individual components in a non-repetitive configuration the components having an active region in common
- H01L27/0705—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 a plurality of individual components in a non-repetitive configuration the components having an active region in common comprising components of the field effect type
- H01L27/0727—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 a plurality of individual components in a non-repetitive configuration the components having an active region in common comprising components of the field effect type in combination with diodes, or capacitors or resistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/0684—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by the shape, relative sizes or dispositions of the semiconductor regions or junctions between the regions
- H01L29/0692—Surface layout
- H01L29/0696—Surface layout of cellular field-effect devices, e.g. multicellular DMOS transistors or IGBTs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/08—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions with semiconductor regions connected to an electrode carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
- H01L29/083—Anode or cathode regions of thyristors or gated bipolar-mode devices
- H01L29/0834—Anode regions of thyristors or gated bipolar-mode devices, e.g. supplementary regions surrounding anode regions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/30—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by physical imperfections; having polished or roughened surface
- H01L29/32—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by physical imperfections; having polished or roughened surface the imperfections being within the semiconductor body
-
- 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
- H01L29/66234—Bipolar junction transistors [BJT]
- H01L29/66325—Bipolar junction transistors [BJT] controlled by field-effect, e.g. insulated gate bipolar transistors [IGBT]
- H01L29/66333—Vertical insulated gate bipolar transistors
- H01L29/66348—Vertical insulated gate bipolar transistors with a recessed 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
- H01L29/70—Bipolar devices
- H01L29/72—Transistor-type devices, i.e. able to continuously respond to applied control signals
- H01L29/739—Transistor-type devices, i.e. able to continuously respond to applied control signals controlled by field-effect, e.g. bipolar static induction transistors [BSIT]
- H01L29/7393—Insulated gate bipolar mode transistors, i.e. IGBT; IGT; COMFET
- H01L29/7395—Vertical transistors, e.g. vertical IGBT
- H01L29/7396—Vertical transistors, e.g. vertical IGBT with a non planar surface, e.g. with a non planar gate or with a trench or recess or pillar in the surface of the emitter, base or collector region for improving current density or short circuiting the emitter and base regions
- H01L29/7397—Vertical transistors, e.g. vertical IGBT with a non planar surface, e.g. with a non planar gate or with a trench or recess or pillar in the surface of the emitter, base or collector region for improving current density or short circuiting the emitter and base regions and a gate structure lying on a slanted or vertical surface or formed in a groove, e.g. trench gate IGBT
-
- 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
- H01L29/402—Field plates
- H01L29/407—Recessed field plates, e.g. trench field plates, buried field plates
-
- 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
- H01L29/42316—Gate electrodes for field effect devices for field-effect transistors
- H01L29/4232—Gate electrodes for field effect devices for field-effect transistors with insulated gate
- H01L29/42372—Gate electrodes for field effect devices for field-effect transistors with insulated gate characterised by the conducting layer, e.g. the length, the sectional shape or the lay-out
- H01L29/4238—Gate electrodes for field effect devices for field-effect transistors with insulated gate characterised by the conducting layer, e.g. the length, the sectional shape or the lay-out characterised by the surface lay-out
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)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
Description
[先行技術文献]
[特許文献]
特許文献1 特開2010-165772号公報
特許文献2 特開2012-238904号公報
特許文献3 特開2018-137454号公報
特許文献4 特開2015-198166号公報
Claims (21)
- 酸素を含む半導体基板を備える半導体装置であって、
前記半導体基板の深さ方向における酸素濃度分布は、前記半導体基板の深さ方向における中央よりも上面側において、前記半導体基板の下面よりも酸素濃度が高い高酸素濃度部を有し、
前記高酸素濃度部は、前記酸素濃度分布において濃度ピークを有し、
前記酸素濃度分布における前記濃度ピークと、前記半導体基板の上面との距離が、5μm以上、20μm以下である
半導体装置。 - 酸素を含む半導体基板を備える半導体装置であって、
前記半導体基板の深さ方向における酸素濃度分布は、前記半導体基板の深さ方向における中央よりも上面側において、前記半導体基板の下面よりも酸素濃度が高い高酸素濃度部を有し、
前記半導体基板の上面に設けられたゲート導電部と、
前記ゲート導電部と前記半導体基板とを絶縁するゲート絶縁膜と
を更に備える半導体装置。 - 酸素を含む半導体基板を備える半導体装置であって、
前記半導体基板の深さ方向における酸素濃度分布は、前記半導体基板の深さ方向における中央よりも上面側において、前記半導体基板の下面よりも酸素濃度が高い高酸素濃度部を有し、
前記半導体基板の下面と接して設けられた第1導電型のカソード領域と、
前記半導体基板の上面と接して設けられた第2導電型のアノード領域と
を更に備える半導体装置。 - 酸素を含む半導体基板を備える半導体装置の製造方法であって、
初期基板に対する酸素の固溶限濃度が、前記初期基板における現在の酸素濃度より高くなるように、前記初期基板をアニールするアニール段階と、
前記初期基板の下面側から前記初期基板を薄化して前記半導体基板を形成する薄化段階と
を備える製造方法。 - 前記初期基板としてMCZ基板を準備する準備段階を更に備える
請求項4に記載の製造方法。 - 前記初期基板としてFZ基板を準備する準備段階を更に備える
請求項4に記載の製造方法。 - 酸素を含む半導体基板を備える半導体装置であって、
前記半導体基板の深さ方向における酸素濃度分布は、前記半導体基板の深さ方向における中央よりも上面側において、前記半導体基板の下面よりも酸素濃度が高い高酸素濃度部を有し、
前記半導体基板の上面における前記酸素濃度は前記半導体基板における前記酸素濃度の最小値と一致している半導体装置。 - 酸素を含む半導体基板を備える半導体装置であって、
前記半導体基板の深さ方向における酸素濃度分布は、前記半導体基板の深さ方向における中央よりも上面側において、前記半導体基板の下面よりも酸素濃度が高い高酸素濃度部を有し、
前記酸素濃度分布は、前記半導体基板の前記下面から前記半導体基板の深さ方向における中央よりも上面側まで、前記酸素濃度が前記半導体基板の前記下面の前記酸素濃度と一致する平坦領域を有している半導体装置。 - 前記高酸素濃度部は、前記酸素濃度分布において濃度ピークを有する
請求項7または8に記載の半導体装置。 - 前記酸素濃度は、前記濃度ピークから前記半導体基板の下面に向かって、前記半導体基板の下面における前記酸素濃度と同一の濃度になるまで減少する
請求項9に記載の半導体装置。 - 前記半導体基板の深さ方向における結晶欠陥の密度分布は、前記半導体基板の上面側において上面側密度ピークを有し、
前記上面側密度ピークは、前記酸素濃度が前記濃度ピークにおけるピーク値の50%以上となる深さ範囲に配置されている
請求項1、9または10のいずれか一項に記載の半導体装置。 - 前記上面側密度ピークは、前記酸素濃度が前記濃度ピークにおけるピーク値の80%以上となる深さ範囲に配置されている
請求項11に記載の半導体装置。 - 前記酸素濃度分布において、前記酸素濃度が前記濃度ピークにおけるピーク値の50%以上となる深さ範囲が、10μm以上である
請求項11に記載の半導体装置。 - 前記濃度ピークは、前記上面側密度ピークと前記半導体基板の上面との間に配置されている
請求項11から13のいずれか一項に記載の半導体装置。 - 前記酸素濃度分布における前記酸素濃度の最小値に対して、前記濃度ピークにおけるピーク値が1.5倍以上である
請求項1または9から14のいずれか一項に記載の半導体装置。 - 前記酸素濃度分布における前記酸素濃度の最小値に対して、前記濃度ピークにおけるピーク値が5倍以上である
請求項15に記載の半導体装置。 - 前記半導体基板には、活性部と前記活性部を囲むエッジ終端構造部とが設けられ、
前記活性部には、トランジスタ部とダイオード部とが設けられる
請求項1または7から16のいずれか一項に記載の半導体装置。 - 前記トランジスタ部と前記ダイオード部は、配列方向に交互に配置される
請求項17に記載の半導体装置。 - 前記トランジスタ部および前記ダイオード部は、
前記半導体基板の上面と接して設けられた第2導電型のベース領域
を有し、
前記トランジスタ部は、
前記半導体基板の下面と接して設けられた第2導電型のコレクタ領域
を有し、
前記ダイオード部は、
前記半導体基板の下面と接して設けられた第1導電型のカソード領域
を有し、
前記ダイオード部に設けられた前記ベース領域は、アノード領域として機能する
請求項17または18に記載の半導体装置。 - 前記トランジスタ部には、ゲートトレンチ部が設けられ、
前記トランジスタ部および前記ダイオード部には、ダミートレンチ部が設けられ、
前記ゲートトレンチ部は、
前記半導体基板の上面に設けられたゲートトレンチと、
前記ゲートトレンチの内壁を覆うゲート絶縁膜と、
前記ゲートトレンチの内部において前記ゲート絶縁膜より内側に設けられるゲート導電部と
を有し、
前記ダミートレンチ部は、
前記半導体基板の上面に設けられたダミートレンチと、
前記ダミートレンチの内壁を覆うダミー絶縁膜と、
前記ダミートレンチの内部において前記ダミー絶縁膜より内側に設けられるダミー導電部と
を有する
請求項17から19のいずれか一項に記載の半導体装置。 - 前記ダイオード部には、前記半導体基板の深さ方向における中央よりも上面側に上面側ライフタイム制御領域が設けられる
請求項17から19のいずれか一項に記載の半導体装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019086038 | 2019-04-26 | ||
JP2019086038 | 2019-04-26 | ||
PCT/JP2020/006920 WO2020217683A1 (ja) | 2019-04-26 | 2020-02-20 | 半導体装置および製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2020217683A1 JPWO2020217683A1 (ja) | 2021-10-14 |
JP7251616B2 true JP7251616B2 (ja) | 2023-04-04 |
Family
ID=72942405
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2021515833A Active JP7251616B2 (ja) | 2019-04-26 | 2020-02-20 | 半導体装置および製造方法 |
Country Status (5)
Country | Link |
---|---|
US (2) | US11710766B2 (ja) |
EP (1) | EP3842574B1 (ja) |
JP (1) | JP7251616B2 (ja) |
CN (1) | CN112752871B (ja) |
WO (1) | WO2020217683A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20230335410A1 (en) * | 2020-12-15 | 2023-10-19 | Mitsubishi Electric Corporation | Semiconductor device manufacturing method, and semiconductor device |
WO2024122541A1 (ja) * | 2022-12-08 | 2024-06-13 | 富士電機株式会社 | 半導体装置および半導体装置の製造方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008177296A (ja) | 2007-01-17 | 2008-07-31 | Toyota Central R&D Labs Inc | 半導体装置、pnダイオード、igbt、及びそれらの製造方法 |
JP2011222550A (ja) | 2010-04-02 | 2011-11-04 | Toyota Central R&D Labs Inc | Pinダイオード |
JP2016111337A (ja) | 2014-10-09 | 2016-06-20 | インフィネオン テクノロジーズ アーゲーInfineon Technologies Ag | 半導体ウエハーの製造方法と低格子間酸素濃度を有する半導体デバイス |
JP2018137454A (ja) | 2015-06-17 | 2018-08-30 | 富士電機株式会社 | 半導体装置および半導体装置の製造方法 |
WO2019078131A1 (ja) | 2017-10-18 | 2019-04-25 | 富士電機株式会社 | 半導体装置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007055352A1 (ja) * | 2005-11-14 | 2007-05-18 | Fuji Electric Device Technology Co., Ltd. | 半導体装置およびその製造方法 |
JP5124964B2 (ja) * | 2006-03-27 | 2013-01-23 | サンケン電気株式会社 | 半導体装置の製法 |
JP2010165772A (ja) | 2009-01-14 | 2010-07-29 | Toshiba Corp | 半導体装置の製造方法 |
EP2695184B1 (en) * | 2011-04-06 | 2018-02-14 | Oxford University Innovation Limited | Processing a wafer for an electronic circuit |
JP5733417B2 (ja) * | 2011-11-15 | 2015-06-10 | 富士電機株式会社 | 半導体装置および半導体装置の製造方法 |
JP6083412B2 (ja) | 2014-04-01 | 2017-02-22 | 信越半導体株式会社 | 再結合ライフタイムの制御方法及びシリコン基板の製造方法 |
JP6268117B2 (ja) * | 2015-03-27 | 2018-01-24 | 株式会社日立製作所 | 半導体装置およびその製造方法、並びに電力変換システム |
JP6109432B2 (ja) * | 2015-04-02 | 2017-04-05 | 三菱電機株式会社 | 電力用半導体装置の製造方法 |
CN107851584B (zh) * | 2016-02-23 | 2021-06-11 | 富士电机株式会社 | 半导体装置 |
-
2020
- 2020-02-20 EP EP20794991.8A patent/EP3842574B1/en active Active
- 2020-02-20 JP JP2021515833A patent/JP7251616B2/ja active Active
- 2020-02-20 CN CN202080005360.4A patent/CN112752871B/zh active Active
- 2020-02-20 WO PCT/JP2020/006920 patent/WO2020217683A1/ja unknown
-
2021
- 2021-03-23 US US17/209,242 patent/US11710766B2/en active Active
-
2023
- 2023-07-14 US US18/352,283 patent/US20230361167A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008177296A (ja) | 2007-01-17 | 2008-07-31 | Toyota Central R&D Labs Inc | 半導体装置、pnダイオード、igbt、及びそれらの製造方法 |
JP2011222550A (ja) | 2010-04-02 | 2011-11-04 | Toyota Central R&D Labs Inc | Pinダイオード |
JP2016111337A (ja) | 2014-10-09 | 2016-06-20 | インフィネオン テクノロジーズ アーゲーInfineon Technologies Ag | 半導体ウエハーの製造方法と低格子間酸素濃度を有する半導体デバイス |
JP2018137454A (ja) | 2015-06-17 | 2018-08-30 | 富士電機株式会社 | 半導体装置および半導体装置の製造方法 |
WO2019078131A1 (ja) | 2017-10-18 | 2019-04-25 | 富士電機株式会社 | 半導体装置 |
Also Published As
Publication number | Publication date |
---|---|
US20230361167A1 (en) | 2023-11-09 |
CN112752871A (zh) | 2021-05-04 |
CN112752871B (zh) | 2023-09-22 |
EP3842574B1 (en) | 2024-03-27 |
EP3842574A1 (en) | 2021-06-30 |
EP3842574A4 (en) | 2021-11-17 |
US11710766B2 (en) | 2023-07-25 |
WO2020217683A1 (ja) | 2020-10-29 |
US20210210595A1 (en) | 2021-07-08 |
JPWO2020217683A1 (ja) | 2021-10-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP7327541B2 (ja) | 半導体装置および半導体装置の製造方法 | |
JP7268743B2 (ja) | 半導体装置 | |
US11894426B2 (en) | Semiconductor device and manufacturing method for semiconductor device | |
US20230361167A1 (en) | Semiconductor device and manufacturing method | |
JP2023041915A (ja) | 半導体装置 | |
JP7279846B2 (ja) | 半導体装置 | |
CN113544857B (zh) | 半导体装置以及制造方法 | |
JP2023179647A (ja) | 半導体装置および半導体装置の製造方法 | |
JP7395844B2 (ja) | 半導体装置および製造方法 | |
JP7473075B2 (ja) | 半導体装置 | |
JP2023119676A (ja) | 半導体装置 | |
JP7400834B2 (ja) | 半導体装置および半導体装置の製造方法 | |
JP7452632B2 (ja) | 半導体装置および半導体装置の製造方法 | |
WO2024166492A1 (ja) | 半導体装置 | |
JP7231066B2 (ja) | 半導体装置および半導体装置の製造方法 | |
WO2023224059A1 (ja) | 半導体装置 | |
WO2023063412A1 (ja) | 半導体装置および半導体装置の製造方法 | |
JP2024035557A (ja) | 半導体装置 | |
JP2024067536A (ja) | 半導体装置 | |
JP2022161357A (ja) | 半導体装置および製造方法 | |
CN117561610A (zh) | 半导体装置及制造方法 | |
CN114127930A (zh) | 半导体装置 | |
CN117096184A (zh) | 半导体装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20210326 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20210326 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20220510 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20220706 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20221011 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20221214 |
|
C60 | Trial request (containing other claim documents, opposition documents) |
Free format text: JAPANESE INTERMEDIATE CODE: C60 Effective date: 20221214 |
|
A911 | Transfer to examiner for re-examination before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A911 Effective date: 20221223 |
|
C21 | Notice of transfer of a case for reconsideration by examiners before appeal proceedings |
Free format text: JAPANESE INTERMEDIATE CODE: C21 Effective date: 20230104 |
|
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: 20230221 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20230306 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 7251616 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |