JP6966740B2 - ショットキーバリアダイオード - Google Patents
ショットキーバリアダイオード Download PDFInfo
- Publication number
- JP6966740B2 JP6966740B2 JP2018199203A JP2018199203A JP6966740B2 JP 6966740 B2 JP6966740 B2 JP 6966740B2 JP 2018199203 A JP2018199203 A JP 2018199203A JP 2018199203 A JP2018199203 A JP 2018199203A JP 6966740 B2 JP6966740 B2 JP 6966740B2
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- Prior art keywords
- layer
- electric field
- barrier diode
- schottky barrier
- anode electrode
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- 230000004888 barrier function Effects 0.000 title claims description 56
- 239000004065 semiconductor Substances 0.000 claims description 101
- AJNVQOSZGJRYEI-UHFFFAOYSA-N digallium;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Ga+3].[Ga+3] AJNVQOSZGJRYEI-UHFFFAOYSA-N 0.000 claims description 20
- 239000000758 substrate Substances 0.000 claims description 20
- 229910001195 gallium oxide Inorganic materials 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 19
- 230000005684 electric field Effects 0.000 description 78
- 238000004088 simulation Methods 0.000 description 37
- 239000010408 film Substances 0.000 description 16
- 230000002093 peripheral effect Effects 0.000 description 14
- 230000004048 modification Effects 0.000 description 11
- 238000012986 modification Methods 0.000 description 11
- 230000015556 catabolic process Effects 0.000 description 10
- 239000010931 gold Substances 0.000 description 9
- 229910004298 SiO 2 Inorganic materials 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 229910052737 gold Inorganic materials 0.000 description 7
- 239000010936 titanium Substances 0.000 description 7
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 6
- 239000002019 doping agent Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 229910052763 palladium Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 229910002601 GaN Inorganic materials 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910005191 Ga 2 O 3 Inorganic materials 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 238000002248 hydride vapour-phase epitaxy Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 238000005546 reactive sputtering Methods 0.000 description 1
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D62/00—Semiconductor bodies, or regions thereof, of devices having potential barriers
- H10D62/10—Shapes, relative sizes or dispositions of the regions of the semiconductor bodies; Shapes of the semiconductor bodies
- H10D62/102—Constructional design considerations for preventing surface leakage or controlling electric field concentration
- H10D62/103—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices
- H10D62/105—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices by having particular doping profiles, shapes or arrangements of PN junctions; by having supplementary regions, e.g. junction termination extension [JTE]
- H10D62/106—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices by having particular doping profiles, shapes or arrangements of PN junctions; by having supplementary regions, e.g. junction termination extension [JTE] having supplementary regions doped oppositely to or in rectifying contact with regions of the semiconductor bodies, e.g. guard rings with PN or Schottky junctions
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D62/00—Semiconductor bodies, or regions thereof, of devices having potential barriers
- H10D62/80—Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D62/00—Semiconductor bodies, or regions thereof, of devices having potential barriers
- H10D62/80—Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials
- H10D62/82—Heterojunctions
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D64/00—Electrodes of devices having potential barriers
- H10D64/20—Electrodes characterised by their shapes, relative sizes or dispositions
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D64/00—Electrodes of devices having potential barriers
- H10D64/60—Electrodes characterised by their materials
- H10D64/64—Electrodes comprising a Schottky barrier to a semiconductor
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D8/00—Diodes
- H10D8/60—Schottky-barrier diodes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D8/00—Diodes
- H10D8/60—Schottky-barrier diodes
- H10D8/605—Schottky-barrier diodes of the trench conductor-insulator-semiconductor barrier type, e.g. trench MOS barrier Schottky rectifiers [TMBS]
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D62/00—Semiconductor bodies, or regions thereof, of devices having potential barriers
- H10D62/10—Shapes, relative sizes or dispositions of the regions of the semiconductor bodies; Shapes of the semiconductor bodies
- H10D62/117—Shapes of semiconductor bodies
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D64/00—Electrodes of devices having potential barriers
- H10D64/111—Field plates
Landscapes
- Electrodes Of Semiconductors (AREA)
Description
図1は、本発明の第1の実施形態によるショットキーバリアダイオード100の構成を示す模式的な上面図である。また、図2は、図1のA−A線に沿った模式的な断面図である。
図8は、本発明の第2の実施形態によるショットキーバリアダイオード200の構成を示す模式的な断面図である。
21 半導体基板の上面
22 半導体基板の裏面
30 ドリフト層
31 ドリフト層の上面
40 アノード電極
50 カソード電極
60 中心トレンチ
60a 端部に位置する中心トレンチ
61 絶縁膜
70 半導体層
80 絶縁層
81 絶縁層の上面
100,100a〜100e,200,200a,200b ショットキーバリアダイオード
A〜F 領域
G1〜G3 ギャップ
Claims (5)
- 酸化ガリウムからなる半導体基板と、
前記半導体基板上に設けられた酸化ガリウムからなるドリフト層と、
前記ドリフト層とショットキー接触するアノード電極と、
前記半導体基板とオーミック接触するカソード電極と、
前記ドリフト層上に設けられ、平面視で前記アノード電極を囲む絶縁層と、
前記アノード電極と前記絶縁層の間に位置する前記ドリフト層の表面、並びに、前記絶縁層上に設けられた、前記ドリフト層と逆導電型の半導体層と、を備えることを特徴とするショットキーバリアダイオード。 - 前記半導体層が酸化物半導体材料からなることを特徴とする請求項1に記載のショットキーバリアダイオード。
- 前記アノード電極と前記半導体層が重なりを有していることを特徴とする請求項1又は2に記載のショットキーバリアダイオード。
- 前記ドリフト層は、平面視で前記アノード電極と重なる位置に設けられた複数の中心トレンチをさらに有することを特徴とする請求項1乃至3のいずれか一項に記載のショットキーバリアダイオード。
- 前記複数の中心トレンチの内壁は絶縁膜で覆われていることを特徴とする請求項4に記載のショットキーバリアダイオード。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018199203A JP6966740B2 (ja) | 2018-10-23 | 2018-10-23 | ショットキーバリアダイオード |
US17/282,629 US11621357B2 (en) | 2018-10-23 | 2019-10-09 | Schottky barrier diode |
EP19876519.0A EP3872866A4 (en) | 2018-10-23 | 2019-10-09 | SCHOTTKY BARRIER DIODE |
PCT/JP2019/039854 WO2020085095A1 (ja) | 2018-10-23 | 2019-10-09 | ショットキーバリアダイオード |
CN201980070324.3A CN112913035B (zh) | 2018-10-23 | 2019-10-09 | 肖特基势垒二极管 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018199203A JP6966740B2 (ja) | 2018-10-23 | 2018-10-23 | ショットキーバリアダイオード |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2020068260A JP2020068260A (ja) | 2020-04-30 |
JP6966740B2 true JP6966740B2 (ja) | 2021-11-17 |
Family
ID=70330601
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2018199203A Active JP6966740B2 (ja) | 2018-10-23 | 2018-10-23 | ショットキーバリアダイオード |
Country Status (5)
Country | Link |
---|---|
US (1) | US11621357B2 (ja) |
EP (1) | EP3872866A4 (ja) |
JP (1) | JP6966740B2 (ja) |
CN (1) | CN112913035B (ja) |
WO (1) | WO2020085095A1 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EA201892619A1 (ru) | 2011-04-29 | 2019-04-30 | Роше Гликарт Аг | Иммуноконъюгаты, содержащие мутантные полипептиды интерлейкина-2 |
US11476340B2 (en) * | 2019-10-25 | 2022-10-18 | Ohio State Innovation Foundation | Dielectric heterojunction device |
US11848389B2 (en) | 2020-03-19 | 2023-12-19 | Ohio State Innovation Foundation | Low turn on and high breakdown voltage lateral diode |
KR102320367B1 (ko) * | 2020-05-29 | 2021-11-02 | 전북대학교산학협력단 | 필드 플레이트층 증착을 통해 항복 전압을 향상시킨 쇼트키 배리어 다이오드 제조 방법 |
CN115394758B (zh) * | 2022-07-19 | 2024-03-19 | 北京无线电测量研究所 | 一种氧化镓肖特基二极管及其制备方法 |
CN115842060B (zh) * | 2022-11-28 | 2024-11-29 | 西安电子科技大学 | 热电优化设计的沟槽mos型氧化镓功率二极管及制作方法 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004186660A (ja) * | 2002-10-11 | 2004-07-02 | Nippon Inter Electronics Corp | ショットキーバリアダイオード及びその製造方法 |
WO2012098636A1 (ja) * | 2011-01-17 | 2012-07-26 | 富士通株式会社 | 半導体装置及びその製造方法 |
US8772144B2 (en) * | 2011-11-11 | 2014-07-08 | Alpha And Omega Semiconductor Incorporated | Vertical gallium nitride Schottky diode |
US8741707B2 (en) * | 2011-12-22 | 2014-06-03 | Avogy, Inc. | Method and system for fabricating edge termination structures in GaN materials |
JP5888214B2 (ja) * | 2012-11-30 | 2016-03-16 | 富士電機株式会社 | 窒化物系化合物半導体装置およびその製造方法 |
JP6344718B2 (ja) * | 2014-08-06 | 2018-06-20 | 株式会社タムラ製作所 | 結晶積層構造体及び半導体素子 |
JP2017045969A (ja) | 2015-08-28 | 2017-03-02 | 株式会社タムラ製作所 | ショットキーバリアダイオード |
JP6845397B2 (ja) | 2016-04-28 | 2021-03-17 | 株式会社タムラ製作所 | トレンチmos型ショットキーダイオード |
US10483110B2 (en) * | 2016-07-26 | 2019-11-19 | Mitsubishi Electric Corporation | Semiconductor device and method of manufacturing semiconductor device |
CN106887470B (zh) * | 2017-01-23 | 2019-07-16 | 西安电子科技大学 | Ga2O3肖特基二极管器件结构及其制作方法 |
CN106876484B (zh) * | 2017-01-23 | 2019-10-11 | 西安电子科技大学 | 高击穿电压氧化镓肖特基二极管及其制作方法 |
DE112017007060T5 (de) * | 2017-02-14 | 2019-10-24 | Mitsubishi Electric Corporation | Leistungshalbleitereinheit |
US10636663B2 (en) * | 2017-03-29 | 2020-04-28 | Toyoda Gosei Co., Ltd. | Method of manufacturing semiconductor device including implanting impurities into an implanted region of a semiconductor layer and annealing the implanted region |
JP7165322B2 (ja) * | 2018-03-30 | 2022-11-04 | Tdk株式会社 | ショットキーバリアダイオード |
-
2018
- 2018-10-23 JP JP2018199203A patent/JP6966740B2/ja active Active
-
2019
- 2019-10-09 EP EP19876519.0A patent/EP3872866A4/en active Pending
- 2019-10-09 WO PCT/JP2019/039854 patent/WO2020085095A1/ja unknown
- 2019-10-09 CN CN201980070324.3A patent/CN112913035B/zh active Active
- 2019-10-09 US US17/282,629 patent/US11621357B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
WO2020085095A1 (ja) | 2020-04-30 |
JP2020068260A (ja) | 2020-04-30 |
US11621357B2 (en) | 2023-04-04 |
US20210343880A1 (en) | 2021-11-04 |
CN112913035A (zh) | 2021-06-04 |
EP3872866A1 (en) | 2021-09-01 |
CN112913035B (zh) | 2023-08-22 |
EP3872866A4 (en) | 2022-07-13 |
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