JP7198931B2 - パワー半導体デバイス及びその製造方法 - Google Patents
パワー半導体デバイス及びその製造方法 Download PDFInfo
- Publication number
- JP7198931B2 JP7198931B2 JP2021536814A JP2021536814A JP7198931B2 JP 7198931 B2 JP7198931 B2 JP 7198931B2 JP 2021536814 A JP2021536814 A JP 2021536814A JP 2021536814 A JP2021536814 A JP 2021536814A JP 7198931 B2 JP7198931 B2 JP 7198931B2
- Authority
- JP
- Japan
- Prior art keywords
- region
- conductivity type
- doping
- contact
- power semiconductor
- 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 49
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 66
- 239000002184 metal Substances 0.000 claims description 66
- 239000000758 substrate Substances 0.000 claims description 28
- 150000002500 ions Chemical class 0.000 claims description 16
- 230000004888 barrier function Effects 0.000 claims description 15
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 13
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- 238000000206 photolithography Methods 0.000 claims description 8
- 229920002120 photoresistant polymer Polymers 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 238000005468 ion implantation Methods 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 230000015556 catabolic process Effects 0.000 description 9
- 230000003071 parasitic effect Effects 0.000 description 7
- -1 aluminum ions Chemical class 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000002161 passivation Methods 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 239000003989 dielectric material Substances 0.000 description 3
- 239000007943 implant Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
- 229920005591 polysilicon Polymers 0.000 description 3
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 2
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910052454 barium strontium titanate Inorganic materials 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 229910052732 germanium Inorganic materials 0.000 description 2
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 2
- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- 229910000449 hafnium oxide Inorganic materials 0.000 description 1
- WIHZLLGSGQNAGK-UHFFFAOYSA-N hafnium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Hf+4] WIHZLLGSGQNAGK-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical class [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 230000007704 transition Effects 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
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7801—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/7802—Vertical DMOS transistors, i.e. VDMOS transistors
- H01L29/7803—Vertical DMOS transistors, i.e. VDMOS transistors structurally associated with at least one other device
- H01L29/7806—Vertical DMOS transistors, i.e. VDMOS transistors structurally associated with at least one other device the other device being a Schottky barrier diode
-
- 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
- H01L21/0445—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 crystalline silicon carbide
- H01L21/0455—Making n or p doped regions or layers, e.g. using diffusion
- H01L21/046—Making n or p doped regions or layers, e.g. using diffusion using ion implantation
- H01L21/0465—Making n or p doped regions or layers, e.g. using diffusion using ion implantation using masks
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/10—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
- H01L29/1095—Body region, i.e. base region, of 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
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66053—Multistep manufacturing processes of devices having a semiconductor body comprising crystalline silicon carbide
- H01L29/66068—Multistep manufacturing processes of devices having a semiconductor body comprising crystalline silicon carbide 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
-
- 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
- H01L29/66674—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/66712—Vertical DMOS transistors, i.e. VDMOS 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
- H01L29/02—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
- H01L29/0607—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 for preventing surface leakage or controlling electric field concentration
- H01L29/0611—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 for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse biased devices
- H01L29/0615—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 for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse biased devices by the doping profile or the shape or the arrangement of the PN junction, or with supplementary regions, e.g. junction termination extension [JTE]
- H01L29/0619—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 for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse biased devices by the doping profile or the shape or the arrangement of the PN junction, or with supplementary regions, e.g. junction termination extension [JTE] with a supplementary region doped oppositely to or in rectifying contact with the semiconductor containing or contacting region, e.g. guard rings with PN or Schottky junction
- H01L29/0623—Buried supplementary region, e.g. buried guard ring
-
- 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
- H01L29/12—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/16—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic Table
- H01L29/1608—Silicon carbide
-
- 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
- H01L29/47—Schottky barrier electrodes
-
- 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
- H01L29/872—Schottky diodes
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Electrodes Of Semiconductors (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
Description
Claims (12)
- 第1導電型の基板と、
前記基板の第1表面の上に配設されたドレイン金属と、
前記基板の第2表面の上に配設された前記第1導電型のドリフト領域であって、前記第2表面は、前記第1表面の反対側にある、ドリフト領域と、
前記ドリフト領域内に配設された第2導電型のベース領域であって、前記第1導電型と前記第2導電型とは、反対の導電型である、ベース領域と、
前記ドリフト領域の上にゲート誘電体層を及び前記ゲート誘電体層の上にゲートを備えるゲート構造であって、前記ゲート構造は、前記ベース領域の上方に延在する、ゲート構造と、
前記ゲート構造から離れた、前記ベース領域の1つの側面において前記ベース領域と接触している第1導電型ドーピング領域と、
前記ベース領域内で前記第1導電型ドーピング領域と前記ゲート構造との間に配設された前記第1導電型のソース領域と、
前記第1導電型ドーピング領域の上に配設され、下方の前記第1導電型ドーピング領域と一緒に、整流特性を有するコンタクトバリヤを形成するコンタクト金属であって、第1方向の前記コンタクト金属の寸法が、前記第1方向の前記第1導電型ドーピング領域の寸法よりも大きく、それにより、前記コンタクト金属は、前記第1導電型ドーピング領域の隣の前記ベース領域の上方の位置まで延在するが前記ソース領域には到達せず、前記第1方向は、前記ゲートと前記コンタクト金属との間の配線方向である、コンタクト金属と、
前記コンタクト金属を包み、前記ソース領域と接触しているソース金属と、
前記ドリフト領域内に配設された第2導電型ドーピング領域と、
を備え、
前記第2導電型ドーピング領域は、前記ベース領域及び前記第1導電型ドーピング領域の下方に配設され、前記ベース領域及び前記第1導電型ドーピング領域と接触し、第2方向に間隔を置いて分布させられた複数のサブドーピング領域からなり、前記第2方向は、前記第1方向に垂直であり、前記第2方向と前記第1方向とによって形成された平面が、水平平面であるパワー半導体デバイス。 - 前記ベース領域内で前記ソース領域と前記第1導電型ドーピング領域との間に配設された前記第2導電型のボディコンタクト領域を更に備え、前記コンタクト金属は、前記ボディコンタクト領域と接触している、請求項1に記載のパワー半導体デバイス。
- 前記複数のサブドーピング領域は、等しいサイズのものであり、前記第2方向に等しい間隔に分布させられており、前記第2方向の前記間隔の寸法の、前記第2方向の前記サブドーピング領域の寸法に対する比が、0.2~0.6:1である、請求項1に記載のパワー半導体デバイス。
- 前記ベース領域の下方の前記第2導電型ドーピング領域の部分の、前記第1方向の前記第1導電型ドーピング領域の下方の前記第2導電型ドーピング領域の部分に対する寸法比が、0.2~0.4:1である、請求項1に記載のパワー半導体デバイス。
- 前記第1導電型ドーピング領域のドーピング濃度は、前記ドリフト領域のドーピング濃度よりも大きく、前記ソース領域のドーピング濃度よりも小さい、請求項1に記載のパワー半導体デバイス。
- 前記コンタクト金属は、金、チタン、及びニッケルからなる群から選ばれた少なくとも1つのものでできている、請求項1に記載のパワー半導体デバイス。
- 整流特性を有する前記コンタクトバリヤは、ショットキーバリヤである、請求項1に記載のパワー半導体デバイス。
- 前記第1導電型はN-型であり、前記第2導電型はP-型である、請求項1に記載のパワー半導体デバイス。
- 前記パワー半導体デバイスは、炭化ケイ素パワー半導体デバイスである、請求項1~8のうちのいずれか1項に記載のパワー半導体デバイス。
- パワー半導体デバイスを製造する方法であって、
ドリフト領域を備えた基板を取得するステップであって、前記ドリフト領域は、前記基板の1つの表面の上に形成され、前記基板及び前記ドリフト領域は、第1導電型のものである、ステップと、
前記ドリフト領域内に第2導電型ドーピング領域を形成するステップと、
前記ドリフト領域内に第2導電型のベース領域を形成するために第2導電型イオンをドーピングするステップであって、前記第1導電型と前記第2導電型とは、反対の導電型である、ステップと、
前記ベース領域と接触している前記ドリフト領域内に第1導電型ドーピング領域を形成するために第1導電型イオンをドーピングするステップと、
前記ベース領域内に前記第1導電型のソース領域を形成するために前記第1導電型イオンをドーピングするステップと、
前記第1導電型ドーピング領域の上にコンタクト金属を形成するステップであって、前記コンタクト金属は、下方の前記第1導電型ドーピング領域と一緒に、整流特性を有するコンタクトバリヤを形成し、前記コンタクト金属は、前記ソース領域に向かって前記ベース領域の上方に延在するが前記ソース領域には到達しない、ステップと、
前記ドリフト領域の上にゲート構造を形成するステップであって、前記ゲート構造は、前記ドリフト領域の上にゲート誘電体層を及び前記ゲート誘電体層の上にゲートを備え、前記ゲート構造は、前記第1導電型ドーピング領域の反対側の、前記ベース領域の1つの側面の上方に延在する、ステップと、
前記コンタクト金属を包むソース金属を形成するステップであって、前記ソース金属は、前記ソース領域と接触している、ステップと、
を含み、
前記第2導電型ドーピング領域は、前記ベース領域及び前記第1導電型ドーピング領域の下方に形成され、前記ベース領域及び前記第1導電型ドーピング領域と接触している方法。 - 前記ドリフト領域内に前記第2導電型の前記ベース領域を形成するために第2導電型イオンをドーピングする前記ステップの後で、及び前記第1導電型ドーピング領域の上に前記コンタクト金属を形成する前記ステップの前に、前記方法は、前記ベース領域内にボディコンタクト領域を形成するステップを更に含み、前記ボディコンタクト領域は、前記ソース領域と前記第1導電型ドーピング領域との間に形成される、請求項10に記載の方法。
- 前記ドリフト領域内に前記第2導電型ドーピング領域を形成する前記ステップは、フォトリソグラフィの後に、マスクとしてフォトレジストを用いることによるアルミニウムイオン注入によって、前記ドリフト領域内に間隔を置いて分布させられた前記第2導電型ドーピング領域を形成するステップを含む、請求項10に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201811583692.1 | 2018-12-24 | ||
CN201811583692.1A CN111354794B (zh) | 2018-12-24 | 2018-12-24 | 功率半导体器件及其制造方法 |
PCT/CN2019/127355 WO2020135313A1 (zh) | 2018-12-24 | 2019-12-23 | 功率半导体器件及其制造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2022516061A JP2022516061A (ja) | 2022-02-24 |
JP7198931B2 true JP7198931B2 (ja) | 2023-01-04 |
Family
ID=71129209
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2021536814A Active JP7198931B2 (ja) | 2018-12-24 | 2019-12-23 | パワー半導体デバイス及びその製造方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20220115532A1 (ja) |
EP (1) | EP3905334A4 (ja) |
JP (1) | JP7198931B2 (ja) |
CN (1) | CN111354794B (ja) |
WO (1) | WO2020135313A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2023046067A (ja) | 2021-09-22 | 2023-04-03 | 株式会社東芝 | 半導体装置 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014038110A1 (ja) | 2012-09-06 | 2014-03-13 | 三菱電機株式会社 | 半導体装置 |
WO2014162969A1 (ja) | 2013-04-03 | 2014-10-09 | 三菱電機株式会社 | 半導体装置 |
JP2015056542A (ja) | 2013-09-12 | 2015-03-23 | 住友電気工業株式会社 | 炭化珪素半導体装置 |
JP2015185616A (ja) | 2014-03-20 | 2015-10-22 | 株式会社東芝 | 半導体装置およびその製造方法 |
WO2016052261A1 (ja) | 2014-10-01 | 2016-04-07 | 三菱電機株式会社 | 半導体装置 |
WO2018037701A1 (ja) | 2016-08-25 | 2018-03-01 | 三菱電機株式会社 | 半導体装置 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003017701A (ja) * | 2001-07-04 | 2003-01-17 | Denso Corp | 半導体装置 |
JP4860102B2 (ja) * | 2003-06-26 | 2012-01-25 | ルネサスエレクトロニクス株式会社 | 半導体装置 |
US8704295B1 (en) * | 2008-02-14 | 2014-04-22 | Maxpower Semiconductor, Inc. | Schottky and MOSFET+Schottky structures, devices, and methods |
US7863685B2 (en) * | 2008-05-28 | 2011-01-04 | Force-Mos Technology Corp. | Trench MOSFET with embedded junction barrier Schottky diode |
US20110156810A1 (en) * | 2009-12-30 | 2011-06-30 | Intersil Americas Inc. | Integrated dmos and schottky |
CN101853852B (zh) * | 2010-04-29 | 2011-08-17 | 苏州硅能半导体科技股份有限公司 | 单胞中集成肖特基二极管的沟槽mos器件及制造方法 |
CN101950759A (zh) * | 2010-08-27 | 2011-01-19 | 电子科技大学 | 一种Super Junction VDMOS器件 |
US8431470B2 (en) * | 2011-04-04 | 2013-04-30 | Alpha And Omega Semiconductor Incorporated | Approach to integrate Schottky in MOSFET |
JP2014157896A (ja) * | 2013-02-15 | 2014-08-28 | Toyota Central R&D Labs Inc | 半導体装置とその製造方法 |
US9214572B2 (en) * | 2013-09-20 | 2015-12-15 | Monolith Semiconductor Inc. | High voltage MOSFET devices and methods of making the devices |
US9583482B2 (en) * | 2015-02-11 | 2017-02-28 | Monolith Semiconductor Inc. | High voltage semiconductor devices and methods of making the devices |
US10475920B2 (en) * | 2015-04-22 | 2019-11-12 | Mitsubishi Electric Corporation | Semiconductor device and semiconductor device manufacturing method |
US10256294B2 (en) * | 2015-05-18 | 2019-04-09 | Qorvo Us, Inc. | Vertical gallium nitride power field-effect transistor with a field plate structure |
CN105810722B (zh) * | 2016-03-16 | 2019-04-30 | 中国科学院半导体研究所 | 一种碳化硅mosfet器件及其制备方法 |
CN105762176B (zh) * | 2016-04-28 | 2018-11-09 | 电子科技大学 | 碳化硅mosfet器件及其制作方法 |
US20180019309A1 (en) * | 2016-07-15 | 2018-01-18 | Global Power Technologies Group, Inc. | Semiconductor device based on wideband gap semiconductor materials |
CN108257856B (zh) * | 2017-12-21 | 2019-05-24 | 秦皇岛京河科学技术研究院有限公司 | 耐高温低功耗的SiC MOSFET功率器件的制备方法及其结构 |
CN108899369B (zh) * | 2018-06-27 | 2020-11-03 | 东南大学 | 一种石墨烯沟道碳化硅功率半导体晶体管 |
CN108807505B (zh) * | 2018-08-28 | 2021-01-08 | 电子科技大学 | 一种碳化硅mosfet器件及其制造方法 |
-
2018
- 2018-12-24 CN CN201811583692.1A patent/CN111354794B/zh active Active
-
2019
- 2019-12-23 EP EP19904844.8A patent/EP3905334A4/en active Pending
- 2019-12-23 US US17/417,677 patent/US20220115532A1/en active Pending
- 2019-12-23 JP JP2021536814A patent/JP7198931B2/ja active Active
- 2019-12-23 WO PCT/CN2019/127355 patent/WO2020135313A1/zh unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014038110A1 (ja) | 2012-09-06 | 2014-03-13 | 三菱電機株式会社 | 半導体装置 |
WO2014162969A1 (ja) | 2013-04-03 | 2014-10-09 | 三菱電機株式会社 | 半導体装置 |
JP2015056542A (ja) | 2013-09-12 | 2015-03-23 | 住友電気工業株式会社 | 炭化珪素半導体装置 |
JP2015185616A (ja) | 2014-03-20 | 2015-10-22 | 株式会社東芝 | 半導体装置およびその製造方法 |
WO2016052261A1 (ja) | 2014-10-01 | 2016-04-07 | 三菱電機株式会社 | 半導体装置 |
WO2018037701A1 (ja) | 2016-08-25 | 2018-03-01 | 三菱電機株式会社 | 半導体装置 |
Also Published As
Publication number | Publication date |
---|---|
CN111354794A (zh) | 2020-06-30 |
CN111354794B (zh) | 2021-11-05 |
EP3905334A4 (en) | 2022-09-07 |
US20220115532A1 (en) | 2022-04-14 |
JP2022516061A (ja) | 2022-02-24 |
EP3905334A1 (en) | 2021-11-03 |
WO2020135313A1 (zh) | 2020-07-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10727330B2 (en) | Semiconductor device with diode region | |
US10679983B2 (en) | Method of producing a semiconductor device | |
US8829608B2 (en) | Semiconductor device | |
US8853772B2 (en) | High-mobility trench MOSFETs | |
US20130029466A1 (en) | Semiconductor device and method of manufacturing the same | |
US11749749B2 (en) | Semiconductor device | |
US20080083966A1 (en) | Schottky barrier semiconductor device | |
US20240222498A1 (en) | Semiconductor device including trench gate structure and buried shielding region and method of manufacturing | |
US7847315B2 (en) | High efficiency rectifier | |
JP4282972B2 (ja) | 高耐圧ダイオード | |
CN106876256B (zh) | SiC双槽UMOSFET器件及其制备方法 | |
US20170256642A1 (en) | Tunneling Field Effect Transistor | |
JP4948784B2 (ja) | 半導体装置及びその製造方法 | |
CN111384174A (zh) | 沟槽型mos场效应晶体管及方法、电子设备 | |
CN110459540B (zh) | 集成mosfet和二极管的半导体装置及其制造方法 | |
JP7198931B2 (ja) | パワー半導体デバイス及びその製造方法 | |
US12080757B2 (en) | Method of fabricating super-junction based vertical gallium nitride JFET and MOSFET power devices | |
JP2023162328A (ja) | 縦型電界効果トランジスタおよびその形成のための方法 | |
CN116364778A (zh) | 一种集成HJD的SiC VDMOSFET器件及其制备方法 | |
CN106876471B (zh) | 双槽umosfet器件 | |
TW201330283A (zh) | 具有台面終端的碳化矽蕭基二極體元件及製造方法 | |
CN210296382U (zh) | 半导体装置 | |
JP2006041166A (ja) | イオン注入マスクの形成方法及び炭化珪素デバイス | |
CN210296370U (zh) | 半导体装置 | |
TWI795286B (zh) | 浮動保護環耐壓的穩定方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20210804 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20220623 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20220705 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20220805 |
|
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: 20221129 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20221219 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 7198931 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |