KR20040005998A - 트렌치 쇼트키 정류기 - Google Patents
트렌치 쇼트키 정류기 Download PDFInfo
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- KR20040005998A KR20040005998A KR10-2003-7015603A KR20037015603A KR20040005998A KR 20040005998 A KR20040005998 A KR 20040005998A KR 20037015603 A KR20037015603 A KR 20037015603A KR 20040005998 A KR20040005998 A KR 20040005998A
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- 239000004065 semiconductor Substances 0.000 claims abstract description 73
- 238000000034 method Methods 0.000 claims description 26
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 19
- 238000005229 chemical vapour deposition Methods 0.000 claims description 14
- 238000000151 deposition Methods 0.000 claims description 12
- 235000012239 silicon dioxide Nutrition 0.000 claims description 9
- 239000000377 silicon dioxide Substances 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 8
- 230000008021 deposition Effects 0.000 claims description 6
- 230000000873 masking effect Effects 0.000 claims description 5
- 238000005530 etching Methods 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 description 13
- 230000003647 oxidation Effects 0.000 description 9
- 238000007254 oxidation reaction Methods 0.000 description 9
- 230000015556 catabolic process Effects 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000010936 titanium Substances 0.000 description 6
- 229910004298 SiO 2 Inorganic materials 0.000 description 5
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 5
- 230000007547 defect Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000005684 electric field Effects 0.000 description 4
- 229920002120 photoresistant polymer Polymers 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
- 229920005591 polysilicon Polymers 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- MAKDTFFYCIMFQP-UHFFFAOYSA-N titanium tungsten Chemical compound [Ti].[W] MAKDTFFYCIMFQP-UHFFFAOYSA-N 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000002800 charge carrier Substances 0.000 description 1
- MROCJMGDEKINLD-UHFFFAOYSA-N dichlorosilane Chemical compound Cl[SiH2]Cl MROCJMGDEKINLD-UHFFFAOYSA-N 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000407 epitaxy Methods 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910003465 moissanite Inorganic materials 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 238000005036 potential barrier Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000009279 wet oxidation reaction Methods 0.000 description 1
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
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
- H01L29/417—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
- H01L27/08—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including only semiconductor components of a single kind
- H01L27/0817—Thyristors only
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
- H01L27/08—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including only semiconductor components of a single kind
- H01L27/085—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only
- H01L27/095—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being Schottky barrier gate field-effect transistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—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
- H01L29/66083—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by variation of the electric current supplied or the electric potential applied, to one or more of the electrodes carrying the current to be rectified, amplified, oscillated or switched, e.g. two-terminal devices
- H01L29/6609—Diodes
- H01L29/66143—Schottky 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
- H01L29/66—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
-
- 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
- H01L29/8725—Schottky diodes of the trench MOS barrier type [TMBS]
-
- 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
- H01L29/42364—Gate electrodes for field effect devices for field-effect transistors with insulated gate characterised by the insulating layer, e.g. thickness or uniformity
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- 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)
- Electrodes Of Semiconductors (AREA)
Abstract
Description
Claims (19)
- 쇼트키 정류기로서,제 1 면 및 제 2 대향 면을 갖는 반도체 영역으로서, 상기 반도체 영역은 상기 제 1 면에 인접한 제 1 전도도 유형의 캐소드 영역과, 상기 제 2 면에 인접한 상기 제 1 전도도 유형의 드리프트 영역을 포함하며, 상기 드리프트 영역은 상기 캐소드 영역의 순 도핑 농도보다 더 낮은 순 도핑 농도를 갖는, 반도체 영역과;상기 제 2 면으로부터 상기 반도체 영역으로 연장하며, 상기 반도체 영역 내에서 하나 이상의 메사를 한정하는 하나 이상의 트렌치와;상기 하나 이상의 트렌치에서 상기 반도체 영역에 인접한 절연 영역으로서, 상기 반도체 영역과 접촉하는 열적으로 성장된 절연 층과 상기 열적으로 성장된 절연 영역 위에 배치된 증착 성장된 절연 층을 포함하는 절연 영역과;상기 제 2 면에서 상기 반도체 영역에 인접하여 상기 반도체 영역과 쇼트키 정류 접촉을 형성하고(a), 상기 트렌치내의 상기 절연 영역에 인접해 있는(b) 애노드 전극을,포함하는, 쇼트키 정류기.
- 제 1항에 있어서, 상기 절연 영역은 산화물을 포함하는, 쇼트키 정류기.
- 제 2항에 있어서, 상기 절연 영역은 이산화실리콘을 포함하는, 쇼트키 정류기.
- 제 1항에 있어서, 상기 증착으로 성장된 절연 층은 화학 증기 증착에 의해 성장되는, 쇼트키 정류기.
- 제 2항에 있어서, 상기 증착으로 성장된 절연 층은 화학 증기 증착에 의해 성장되는, 쇼트키 정류기.
- 제 3항에 있어서, 상기 증착으로 성장된 절연 층은 화학 증기 증착에 의해 성장되는, 쇼트키 정류기.
- 제 1항에 있어서, 상기 반도체는 실리콘인, 쇼트키 정류기.
- 제 1항에 있어서, 상기 제 1 전도도 유형은 n-유형 전도도인, 쇼트키 정류기.
- 제 1항에 있어서, 상기 트렌치는 상기 캐소드 영역으로 연장하는, 쇼트키 정류기.
- 트렌치 쇼트키 정류기를 형성하는 방법으로서,제 1 및 제 2 대향 면을 갖는 반도체 영역을 형성하는 단계로서, 상기 반도체 영역은 상기 제 1 면에 인접한 제 1 전도도 유형의 캐소드 영역과, 상기 제 2 면에 인접한 상기 제 1 전도도 유형의 드리프트 영역을 포함하며, 상기 드리프트 영역은 상기 캐소드 영역의 순 도핑 농도보다 더 낮은 순 도핑 농도를 갖는, 반도체 영역 형성 단계와;상기 제 2 면으로부터 상기 반도체 영역으로 연장하는 하나 이상의 트렌치를 형성하는 단계로서, 상기 트렌치는 상기 반도체 영역 내에서 하나 이상의 메사를 한정하는 하나 이상의 트렌치 형성 단계와;상기 반도체 영역과 접촉하는 제 1 절연 층을 열적으로 성장시키며, 상기 제 1 열적으로 성장된 절연 층위에 제 2 절연 층을 증착시킴으로써, 상기 트렌치에서 상기 반도체 영역에 인접한 절연 영역을 형성하는 단계와;상기 제 2 면에서 상기 반도체 영역에 인접하여 상기 반도체 영역과 쇼트키 정류 접촉을 형성하고(a), 상기 트렌치내의 상기 절연 영역에 인접해 있는(b) 애노드 전극을 형성하는 단계를,포함하는, 트렌치 쇼트키 정류기 형성 방법.
- 제 10항의 쇼트키 정류기에 있어서,상기 절연 영역은 산화물을 포함하는, 쇼트키 정류기.
- 제 12항의 쇼트키 정류기에 있어서,상기 절연 영역은 이산화실리콘을 포함하는, 쇼트키 정류기.
- 제 10항의 쇼트키 정류기에 있어서,상기 제 2 절연 층은 화학 증기 증착에 의해 증착되는, 쇼트키 정류기.
- 제 11항의 쇼트키 정류기에 있어서,상기 제 2 절연 층은 화학 증기 증착에 의해 증착되는, 쇼트키 정류기.
- 제 12항의 쇼트키 정류기에 있어서,상기 제 2 절연 층은 화학 증기 증착에 의해 증착되는, 쇼트키 정류기.
- 제 10항에 있어서, 상기 반도체 영역의 상기 제 1 면상에 캐소드 전극을 제공하는 단계를 더 포함하는, 트렌치 쇼트키 정류기 형성 방법.
- 제 10항에 있어서, 상기 반도체 영역 형성 단계는 상기 캐소드 영역에 대응하는 반도체 기판을 제공하는 단계와, 상기 기판 상에 상기 드리프트 영역에 대응하는 에피택셜 반도체 층을 성장시키는 단계를 포함하는, 트렌치 쇼트키 정류기 형성 방법.
- 제 10항에 있어서, 상기 트렌치 형성 단계는 상기 반도체 영역의 상기 제 2면 위에 패턴화된 마스킹 층을 형성하는 단계와, 상기 마스킹 층을 통해 상기 트렌치를 에칭하는 단계를 포함하는, 트렌치 쇼트키 정류기 형성 방법.
- 제 10항에 있어서, 상기 트렌치는 상기 캐소드 영역내로 연장하도록 형성되는, 트렌치 쇼트키 정류기 형성 방법.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/872,926 US6580141B2 (en) | 2001-06-01 | 2001-06-01 | Trench schottky rectifier |
US09/872,926 | 2001-06-01 | ||
PCT/US2002/017322 WO2002099889A1 (en) | 2001-06-01 | 2002-05-31 | Trench schottky rectifier |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20040005998A true KR20040005998A (ko) | 2004-01-16 |
KR100884077B1 KR100884077B1 (ko) | 2009-02-19 |
Family
ID=25360613
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020037015603A KR100884077B1 (ko) | 2001-06-01 | 2002-05-31 | 트렌치 쇼트키 정류기 |
Country Status (7)
Country | Link |
---|---|
US (2) | US6580141B2 (ko) |
EP (1) | EP1393379B1 (ko) |
JP (1) | JP4313190B2 (ko) |
KR (1) | KR100884077B1 (ko) |
CN (1) | CN1280915C (ko) |
TW (1) | TW548855B (ko) |
WO (1) | WO2002099889A1 (ko) |
Families Citing this family (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6707127B1 (en) * | 2000-08-31 | 2004-03-16 | General Semiconductor, Inc. | Trench schottky rectifier |
US7009247B2 (en) * | 2001-07-03 | 2006-03-07 | Siliconix Incorporated | Trench MIS device with thick oxide layer in bottom of gate contact trench |
US20060038223A1 (en) * | 2001-07-03 | 2006-02-23 | Siliconix Incorporated | Trench MOSFET having drain-drift region comprising stack of implanted regions |
US7291884B2 (en) * | 2001-07-03 | 2007-11-06 | Siliconix Incorporated | Trench MIS device having implanted drain-drift region and thick bottom oxide |
US7033876B2 (en) * | 2001-07-03 | 2006-04-25 | Siliconix Incorporated | Trench MIS device having implanted drain-drift region and thick bottom oxide and process for manufacturing the same |
US7323402B2 (en) * | 2002-07-11 | 2008-01-29 | International Rectifier Corporation | Trench Schottky barrier diode with differential oxide thickness |
US7084423B2 (en) | 2002-08-12 | 2006-08-01 | Acorn Technologies, Inc. | Method for depinning the Fermi level of a semiconductor at an electrical junction and devices incorporating such junctions |
US6833556B2 (en) | 2002-08-12 | 2004-12-21 | Acorn Technologies, Inc. | Insulated gate field effect transistor having passivated schottky barriers to the channel |
DE102004058431B4 (de) | 2003-12-05 | 2021-02-18 | Infineon Technologies Americas Corp. | III-Nitrid Halbleitervorrichtung mit Grabenstruktur |
US7098521B2 (en) * | 2004-10-01 | 2006-08-29 | International Business Machines Corporation | Reduced guard ring in schottky barrier diode structure |
DE102004056663A1 (de) * | 2004-11-24 | 2006-06-01 | Robert Bosch Gmbh | Halbleitereinrichtung und Gleichrichteranordnung |
EP1681725A1 (fr) * | 2005-01-18 | 2006-07-19 | St Microelectronics S.A. | Composant unipolaire vertical à faible courant de fuite |
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US6580141B2 (en) | 2003-06-17 |
US6770548B2 (en) | 2004-08-03 |
JP4313190B2 (ja) | 2009-08-12 |
KR100884077B1 (ko) | 2009-02-19 |
WO2002099889A9 (en) | 2004-04-08 |
EP1393379A1 (en) | 2004-03-03 |
TW548855B (en) | 2003-08-21 |
WO2002099889A1 (en) | 2002-12-12 |
CN1280915C (zh) | 2006-10-18 |
US20030193074A1 (en) | 2003-10-16 |
EP1393379A4 (en) | 2009-08-12 |
US20020179993A1 (en) | 2002-12-05 |
CN1520615A (zh) | 2004-08-11 |
JP2004529506A (ja) | 2004-09-24 |
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