JP6277623B2 - ワイドバンドギャップ半導体装置 - Google Patents
ワイドバンドギャップ半導体装置 Download PDFInfo
- Publication number
- JP6277623B2 JP6277623B2 JP2013160608A JP2013160608A JP6277623B2 JP 6277623 B2 JP6277623 B2 JP 6277623B2 JP 2013160608 A JP2013160608 A JP 2013160608A JP 2013160608 A JP2013160608 A JP 2013160608A JP 6277623 B2 JP6277623 B2 JP 6277623B2
- Authority
- JP
- Japan
- Prior art keywords
- region
- peripheral region
- semiconductor
- band gap
- wide band
- 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 208
- 230000002093 peripheral effect Effects 0.000 claims description 192
- 239000000758 substrate Substances 0.000 claims description 88
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 17
- 235000012239 silicon dioxide Nutrition 0.000 claims description 11
- 239000000377 silicon dioxide Substances 0.000 claims description 11
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 7
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 7
- 239000004642 Polyimide Substances 0.000 claims description 5
- 229920001721 polyimide Polymers 0.000 claims description 5
- 239000010410 layer Substances 0.000 description 157
- 230000005684 electric field Effects 0.000 description 79
- 210000000746 body region Anatomy 0.000 description 53
- 239000012535 impurity Substances 0.000 description 38
- 238000000034 method Methods 0.000 description 35
- 238000005530 etching Methods 0.000 description 28
- 239000007789 gas Substances 0.000 description 27
- 230000015556 catabolic process Effects 0.000 description 19
- 238000004519 manufacturing process Methods 0.000 description 19
- 239000011229 interlayer Substances 0.000 description 18
- 239000013078 crystal Substances 0.000 description 16
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 14
- 239000000460 chlorine Substances 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 11
- 239000012159 carrier gas Substances 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 8
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 8
- 125000004429 atom Chemical group 0.000 description 8
- 239000004020 conductor Substances 0.000 description 8
- 229910001882 dioxygen Inorganic materials 0.000 description 8
- 125000005843 halogen group Chemical group 0.000 description 8
- 238000005468 ion implantation Methods 0.000 description 8
- 239000012495 reaction gas Substances 0.000 description 8
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 8
- 229910010271 silicon carbide Inorganic materials 0.000 description 8
- 229910052786 argon Inorganic materials 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000005755 formation reaction Methods 0.000 description 7
- 238000000206 photolithography Methods 0.000 description 5
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 4
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 4
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 4
- 238000005229 chemical vapour deposition Methods 0.000 description 4
- 229910052801 chlorine Inorganic materials 0.000 description 4
- 229910052731 fluorine Inorganic materials 0.000 description 4
- 239000011737 fluorine Substances 0.000 description 4
- 239000001307 helium Substances 0.000 description 4
- 229910052734 helium Inorganic materials 0.000 description 4
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229910052814 silicon oxide Inorganic materials 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 230000003213 activating effect Effects 0.000 description 3
- 230000004913 activation Effects 0.000 description 3
- 238000000137 annealing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 229910002601 GaN Inorganic materials 0.000 description 2
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- CJNBYAVZURUTKZ-UHFFFAOYSA-N hafnium(iv) oxide Chemical compound O=[Hf]=O CJNBYAVZURUTKZ-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 239000001294 propane Substances 0.000 description 2
- 229910000077 silane Inorganic materials 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000002050 diffraction method Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000001039 wet etching Methods 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
- H01L29/66007—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
- H01L29/02—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
-
- 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]
-
- 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
- H01L29/0638—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 preventing surface leakage due to surface inversion layer, e.g. with channel stopper
-
- 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
- H01L29/0642—Isolation within the component, i.e. internal isolation
- H01L29/0649—Dielectric regions, e.g. SiO2 regions, air gaps
-
- 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
- H01L29/0657—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 of the body
- H01L29/0661—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 of the body specially adapted for altering the breakdown voltage by removing semiconductor material at, or in the neighbourhood of, a reverse biased junction, e.g. by bevelling, moat etching, depletion etching
-
- 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
- H01L29/1602—Diamond
-
- 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
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/12—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/20—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
- H01L29/2003—Nitride compounds
-
- 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
-
- 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
- H01L29/7811—Vertical DMOS transistors, i.e. VDMOS transistors with an edge termination structure
-
- 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
- H01L29/7813—Vertical DMOS transistors, i.e. VDMOS transistors with trench gate electrode, e.g. UMOS transistors
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Electrodes Of Semiconductors (AREA)
Description
はじめに、本発明の実施の形態の概要について説明する。
次に、本発明の実施の形態についてより詳細に説明する。
図1を参照して、実施の形態1に係るワイドバンドギャップ半導体装置について説明する。実施の形態1におけるワイドバンドギャップ半導体装置の一例としてのMOSFET101はトレンチゲート型トランジスタである。MOSFET101は、エピタキシャル基板20(半導体基板)と、ゲート酸化膜31(ゲート絶縁膜)と、ゲート電極32と、ドレイン電極層40(第1の電極層)と、ソース電極層50(第2の電極層)と、層間絶縁膜60とを有する。
次に、図8を参照して、実施の形態2に係るワイドバンドギャップ半導体装置について説明する。実施の形態2に係るワイドバンドギャップ半導体装置(MOSFET102)は、基本的には実施の形態1に係るワイドバンドギャップ半導体装置と同様の構成を備えるが、周辺領域用溝70の側壁面70cが電界緩和領域25からドリフト層21にまで延びている点で異なる。このとき、周辺領域用溝70の底面70aは、ドリフト層21内に形成されている。つまり、実施の形態2に係るワイドバンドギャップ半導体装置において、薄肉部27bは形成されていない。この場合、ガードリング領域27の厚肉部27aは、周辺領域用溝70の側壁面70cに規定されて複数形成されているが、互いに接続されていないいわゆるフローティングガードリング構造を有している。
次に、図9を参照して、参考例1に係るワイドバンドギャップ半導体装置について説明する。参考例1に係るワイドバンドギャップ半導体装置の一例としてのMOSFET103はトレンチゲート型トランジスタである。MOSFET103は、エピタキシャル基板20(半導体基板)と、ゲート酸化膜31(ゲート絶縁膜)と、ゲート電極32と、ドレイン電極層40(第1の電極層)と、ソース電極層50(第2の電極層)と、層間絶縁膜60とを有する。
上述した実施の形態1および2に係るワイドバンドギャップ半導体装置は、任意の半導体材料からなる半導体装置にも適用可能である。
(2−9)第1の導電型はn型であり、第2の導電型はp型であってもよい。
20E デバイス領域、
20T 周辺領域、
21 ドリフト層(第1の半導体領域)、
22 ボディ領域(第3の半導体領域)、
23 ソース領域(第4の半導体領域)、
24 コンタクト領域、
25 電界緩和領域(第2の半導体領域)、
27 ガードリング領域、
27a 厚肉部、
27b 薄肉部、
28 フィールドストップ領域、
29 単結晶基板、
31 ゲート酸化膜、
32 ゲート電極、
40 ドレイン電極層、
50 ソース電極層、
51 オーミック部、
52 配線部、
60 層間絶縁膜、
61 誘電体層、
70 周辺領域用溝、
70a 底面、
70c 側壁面、
71 段差部、
71a テラス面、
71c ステップ面、
80,81,82,90 マスク層、
101,102,103 MOSFET、
TR トレンチ、
BT 底面、
SW 側壁面、
P1 下部表面、
P2 上部表面(主面)、
PS 基板側面。
Claims (5)
- 主面を有し、ワイドバンドギャップ半導体からなる半導体基板を備え、
前記半導体基板は、前記半導体基板に形成されたデバイス領域と、前記デバイス領域を囲むように形成された周辺領域とを含み、
前記周辺領域において、
前記半導体基板は、第1の導電型を有する第1の半導体領域と、前記第1の半導体領域上に形成され、前記主面を有し、前記第1の導電型と異なる第2の導電型を有する第2の半導体領域とを含み、
前記第2の半導体領域の前記主面には、前記デバイス領域を環状に囲む複数の周辺領域用溝が形成されており、
前記デバイス領域において、前記半導体基板の前記主面には、デバイス用溝が設けられており、
前記周辺領域用溝の延びる方向に対して垂直な方向における前記主面での前記周辺領域用溝の幅は、前記デバイス用溝の延びる方向に対して垂直な方向における前記主面での前記デバイス用溝の幅より小さく、
前記主面と垂直な方向における前記周辺領域用溝の深さは、前記主面と垂直な方向における前記デバイス用溝の深さよりも小さく、
前記周辺領域用溝の底部は、前記第1の半導体領域と前記第2の半導体領域との界面より、前記第1の半導体領域側に位置する、ワイドバンドギャップ半導体装置。 - 前記第2の半導体領域の前記主面上には、前記周辺領域用溝を覆う誘電体層が形成されている、請求項1に記載のワイドバンドギャップ半導体装置。
- 前記誘電体層を構成する材料は、二酸化珪素、ポリイミド、および窒化珪素からなる群から選択される少なくとも1つを含む、請求項2に記載のワイドバンドギャップ半導体装置。
- 前記周辺領域用溝の側壁は、前記主面に対して傾斜している、請求項1〜請求項3のいずれか1項に記載のワイドバンドギャップ半導体装置。
- 前記第1の導電型はn型であり、前記第2の導電型はp型である、請求項1〜請求項4のいずれか1項に記載のワイドバンドギャップ半導体装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013160608A JP6277623B2 (ja) | 2013-08-01 | 2013-08-01 | ワイドバンドギャップ半導体装置 |
PCT/JP2014/065713 WO2015015923A1 (ja) | 2013-08-01 | 2014-06-13 | ワイドバンドギャップ半導体装置 |
US14/908,474 US20160172437A1 (en) | 2013-08-01 | 2014-06-13 | Wide Band Gap Semiconductor Device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013160608A JP6277623B2 (ja) | 2013-08-01 | 2013-08-01 | ワイドバンドギャップ半導体装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2015032664A JP2015032664A (ja) | 2015-02-16 |
JP6277623B2 true JP6277623B2 (ja) | 2018-02-14 |
Family
ID=52431467
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2013160608A Active JP6277623B2 (ja) | 2013-08-01 | 2013-08-01 | ワイドバンドギャップ半導体装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US20160172437A1 (ja) |
JP (1) | JP6277623B2 (ja) |
WO (1) | WO2015015923A1 (ja) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6231396B2 (ja) * | 2014-02-10 | 2017-11-15 | トヨタ自動車株式会社 | 半導体装置及び半導体装置の製造方法 |
JP6274968B2 (ja) * | 2014-05-16 | 2018-02-07 | ローム株式会社 | 半導体装置 |
DE112014007221B4 (de) * | 2014-12-26 | 2023-10-19 | Hitachi Power Semiconductor Device, Ltd. | Halbleitervorrichtung, Verfahren zur Herstellung selbiger und Halbleitermodul |
JP6862782B2 (ja) * | 2016-11-16 | 2021-04-21 | 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 |
CN106356401B (zh) * | 2016-11-21 | 2019-11-29 | 电子科技大学 | 一种功率半导体器件的场限环终端结构 |
JP6946824B2 (ja) * | 2017-07-28 | 2021-10-06 | 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 |
JP7006389B2 (ja) * | 2018-03-09 | 2022-01-24 | 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 |
JPWO2020012810A1 (ja) * | 2018-07-11 | 2021-07-08 | 住友電気工業株式会社 | 炭化珪素半導体装置 |
CN113039649A (zh) * | 2018-11-19 | 2021-06-25 | 三菱电机株式会社 | 半导体装置 |
CN116544268B (zh) * | 2023-07-06 | 2023-09-26 | 通威微电子有限公司 | 一种半导体器件结构及其制作方法 |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09283754A (ja) * | 1996-04-16 | 1997-10-31 | Toshiba Corp | 高耐圧半導体装置 |
JPH1187698A (ja) * | 1997-09-02 | 1999-03-30 | Kansai Electric Power Co Inc:The | 高耐圧半導体装置及びこの装置を用いた電力変換器 |
US6031265A (en) * | 1997-10-16 | 2000-02-29 | Magepower Semiconductor Corp. | Enhancing DMOS device ruggedness by reducing transistor parasitic resistance and by inducing breakdown near gate runners and termination area |
JPH11297994A (ja) * | 1998-04-07 | 1999-10-29 | Hitachi Ltd | 半導体装置 |
US7186609B2 (en) * | 1999-12-30 | 2007-03-06 | Siliconix Incorporated | Method of fabricating trench junction barrier rectifier |
JP5050329B2 (ja) * | 2005-08-26 | 2012-10-17 | サンケン電気株式会社 | トレンチ構造半導体装置及びその製造方法 |
JP4453671B2 (ja) * | 2006-03-08 | 2010-04-21 | トヨタ自動車株式会社 | 絶縁ゲート型半導体装置およびその製造方法 |
US20080293205A1 (en) * | 2007-05-23 | 2008-11-27 | Oh-Kyum Kwon | Method of forming metal silicide layer, and method of manufacturing semiconductor device using the same |
KR101220568B1 (ko) * | 2008-03-17 | 2013-01-21 | 미쓰비시덴키 가부시키가이샤 | 반도체 장치 |
US7851881B1 (en) * | 2008-03-21 | 2010-12-14 | Microsemi Corporation | Schottky barrier diode (SBD) and its off-shoot merged PN/Schottky diode or junction barrier Schottky (JBS) diode |
US8030702B2 (en) * | 2008-04-29 | 2011-10-04 | Force Mos Technology Co., Ltd. | Trenched MOSFET with guard ring and channel stop |
JP2010225833A (ja) * | 2009-03-24 | 2010-10-07 | Toshiba Corp | 半導体装置 |
CN102473721B (zh) * | 2009-07-31 | 2015-05-06 | 富士电机株式会社 | 半导体装置 |
KR101439805B1 (ko) * | 2011-01-14 | 2014-09-11 | 미쓰비시덴키 가부시키가이샤 | 반도체 장치의 제조 방법 |
US8847278B2 (en) * | 2011-01-17 | 2014-09-30 | Fuji Electric Co., Ltd. | Semiconductor device comprising a breakdown withstanding section |
JP5745954B2 (ja) * | 2011-06-29 | 2015-07-08 | 三菱電機株式会社 | 半導体装置およびその製造方法 |
US9385188B2 (en) * | 2012-01-12 | 2016-07-05 | Toyota Jidosha Kabushiki Kaisha | Semiconductor device with termination region having floating electrodes in an insulating layer |
JP5812029B2 (ja) * | 2012-06-13 | 2015-11-11 | 株式会社デンソー | 炭化珪素半導体装置およびその製造方法 |
JP6112600B2 (ja) * | 2012-12-10 | 2017-04-12 | ローム株式会社 | 半導体装置および半導体装置の製造方法 |
JPWO2015060441A1 (ja) * | 2013-10-24 | 2017-03-09 | ローム株式会社 | 半導体装置および半導体パッケージ |
-
2013
- 2013-08-01 JP JP2013160608A patent/JP6277623B2/ja active Active
-
2014
- 2014-06-13 WO PCT/JP2014/065713 patent/WO2015015923A1/ja active Application Filing
- 2014-06-13 US US14/908,474 patent/US20160172437A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
JP2015032664A (ja) | 2015-02-16 |
WO2015015923A1 (ja) | 2015-02-05 |
US20160172437A1 (en) | 2016-06-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6277623B2 (ja) | ワイドバンドギャップ半導体装置 | |
WO2015015934A1 (ja) | ワイドバンドギャップ半導体装置 | |
EP2863417B1 (en) | Silicon carbide semiconductor device and method for producing same | |
JP5994604B2 (ja) | 炭化珪素半導体装置およびその製造方法 | |
JP5742657B2 (ja) | 炭化珪素半導体装置およびその製造方法 | |
JP6244665B2 (ja) | 半導体装置 | |
WO2015005010A1 (ja) | 半導体装置およびその製造方法 | |
JP5996671B2 (ja) | 炭化珪素半導体装置及びその製造方法 | |
JP6140823B2 (ja) | 炭化珪素半導体装置 | |
JP6135364B2 (ja) | 炭化珪素半導体装置およびその製造方法 | |
WO2013027471A1 (ja) | 半導体装置 | |
JP2017092355A (ja) | 半導体装置および半導体装置の製造方法 | |
WO2017051616A1 (ja) | 炭化珪素半導体装置およびその製造方法 | |
JP6991476B2 (ja) | 半導体装置 | |
WO2014192437A1 (ja) | 炭化珪素半導体装置 | |
JP5875334B2 (ja) | 炭化珪素半導体装置 | |
WO2015015938A1 (ja) | 炭化珪素半導体装置の製造方法 | |
JP7156313B2 (ja) | 炭化珪素半導体装置 | |
WO2015076020A1 (ja) | 半導体装置 | |
US20220376109A1 (en) | Semiconductor device and method for manufacturing same | |
JP2023104658A (ja) | 炭化珪素半導体装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20160322 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20170404 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20170605 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20170926 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20171020 |
|
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: 20171219 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20180101 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6277623 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |