JP6626929B1 - 半導体デバイス及び電気装置 - Google Patents
半導体デバイス及び電気装置 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 99
- 239000012535 impurity Substances 0.000 claims abstract description 18
- 230000002093 peripheral effect Effects 0.000 claims description 64
- 230000004888 barrier function Effects 0.000 description 31
- 239000000758 substrate Substances 0.000 description 20
- 230000015556 catabolic process Effects 0.000 description 11
- 230000005684 electric field Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000005229 chemical vapour deposition Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910002601 GaN Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- AJNVQOSZGJRYEI-UHFFFAOYSA-N digallium;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Ga+3].[Ga+3] AJNVQOSZGJRYEI-UHFFFAOYSA-N 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000001451 molecular beam epitaxy Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 238000005092 sublimation method Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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- 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
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- H01—ELECTRIC ELEMENTS
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- 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]
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- 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
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- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/402—Field plates
- H01L29/407—Recessed field plates, e.g. trench field plates, buried field plates
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- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
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- 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
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- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
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- 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
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- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
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- Electrodes Of Semiconductors (AREA)
Abstract
Description
第1導電型の不純物を含んだ第1半導体を有する第1層と、
前記第1層と接し、前記第1半導体よりも低濃度の第1導電型の不純物を含んだ第2半導体を有する第2層と、
前記第1層の前記第2層とは反対側の第1面に接する第1電極と、
前記第2層の前記第1層とは反対側の第2面にショットキー接合された第2電極と、
を備え、
前記第2層は、
前記第2電極と接続された第3電極を絶縁膜を介して内部に有する第1トレンチと、
前記第1トレンチよりも前記第2層の外周部の近くに位置し、前記第2電極と接続された第4電極を絶縁膜を介して内部に有する第2トレンチとを、
更に有し、
前記第1トレンチと前記第2トレンチとの間の前記第2面に接した前記第2電極の全外周端が前記第4電極に接し、
前記第2トレンチの深さが、前記第1トレンチの深さより深い。
前記半導体デバイスは、
第1導電型の不純物を含んだ第1半導体を有する第1層と、
前記第1層と接し、前記第1半導体よりも低濃度の第1導電型の不純物を含んだ第2半導体を有する第2層と、
前記第1層の前記第2層とは反対側の第1面に接する第1電極と、
前記第2層の前記第1層とは反対側の第2面にショットキー接合された第2電極と、
を備え、
前記第2層は、
前記第2電極と接続された第3電極を絶縁膜を介して内部に有する第1トレンチと、
前記第1トレンチよりも前記第2層の外周部の近くに位置し、前記第2電極と接続された第4電極を絶縁膜を介して内部に有する第2トレンチとを、
更に有し、
前記第1トレンチと前記第2トレンチとの間の前記第2面に接した前記第2電極の全外周端が前記第4電極に接し、
前記第2トレンチの深さが、前記第1トレンチの深さより深い。
11 半導体層
12 半導体基板
13 エピタキシャル層
21 第1電極
22 第2電極
22E 第2電極の外周端
31a 内部トレンチ(第1トレンチ)
31b 内部トレンチ(第3トレンチ)
33 周囲トレンチ(第2トレンチ)
51a、51b、51c 整流器部分
53 耐圧部分
S1 第1面
S2 第2面
23 内部フィールド電極(第3電極)
24 内部フィールド電極(第4電極)
25 内部フィールド電極(第5電極)
41 絶縁膜(第1絶縁膜)
42 絶縁膜(第2絶縁膜)
43 絶縁膜(第3絶縁膜)
Claims (4)
- 第1導電型の不純物を含んだ第1半導体を有する第1層と、
前記第1層と接し、前記第1半導体よりも低濃度の第1導電型の不純物を含んだ第2半導体を有する第2層と、
前記第1層の前記第2層とは反対側の第1面に接する第1電極と、
前記第2層の前記第1層とは反対側の第2面にショットキー接合された第2電極と、
を備え、
前記第2層は、
前記第2電極と接続された第3電極を絶縁膜を介して内部に有する第1トレンチと、
前記第1トレンチよりも前記第2層の外周部の近くに位置し、前記第2電極と接続された第4電極を絶縁膜を介して内部に有する第2トレンチとを、
更に有し、
前記第1トレンチと前記第2トレンチとの間の前記第2面に接した前記第2電極の全外周端が前記第4電極に接し、
前記第2トレンチの深さが、前記第1トレンチの深さより深い半導体デバイス。 - 前記第1導電型は、P型である請求項1に記載の半導体デバイス。
- 前記第1導電型は、N型である請求項1に記載の半導体デバイス。
- 第1導電型の不純物を含んだ第1半導体を有する第1層と、
前記第1層と接し、前記第1半導体よりも低濃度の第1導電型の不純物を含んだ第2半導体を有する第2層と、
前記第1層の前記第2層とは反対側の第1面に接する第1電極と、
前記第2層の前記第1層とは反対側の第2面にショットキー接合された第2電極と、
を備え、
前記第2層は、
前記第2電極と接続された第3電極を絶縁膜を介して内部に有する第1トレンチと、
前記第1トレンチよりも前記第2層の外周部の近くに位置し、前記第2電極と接続された第4電極を絶縁膜を介して内部に有する第2トレンチとを、
更に有し、
前記第1トレンチと前記第2トレンチとの間の前記第2面に接した前記第2電極の全外周端が前記第4電極に接し、
前記第2トレンチの深さが、前記第1トレンチの深さより深い半導体デバイスを備える電気装置。
Priority Applications (6)
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JP2018124659A JP6626929B1 (ja) | 2018-06-29 | 2018-06-29 | 半導体デバイス及び電気装置 |
PCT/JP2019/025296 WO2020004437A1 (ja) | 2018-06-29 | 2019-06-26 | 半導体デバイス及び電気装置 |
KR1020207037002A KR20210011445A (ko) | 2018-06-29 | 2019-06-26 | 반도체 디바이스 및 전기 장치 |
EP19826828.6A EP3817069A4 (en) | 2018-06-29 | 2019-06-26 | SEMICONDUCTOR DEVICE AND ELECTRICAL DEVICE |
US17/253,970 US11393933B2 (en) | 2018-06-29 | 2019-06-26 | Semiconductor device and electric device |
CN201980041794.7A CN112352319B (zh) | 2018-06-29 | 2019-06-26 | 半导体器件以及电子装置 |
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JP2020004906A JP2020004906A (ja) | 2020-01-09 |
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US (1) | US11393933B2 (ja) |
EP (1) | EP3817069A4 (ja) |
JP (1) | JP6626929B1 (ja) |
KR (1) | KR20210011445A (ja) |
CN (1) | CN112352319B (ja) |
WO (1) | WO2020004437A1 (ja) |
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JP7304827B2 (ja) * | 2020-01-20 | 2023-07-07 | 三菱電機株式会社 | 半導体装置およびクラック検出方法 |
JP2022129918A (ja) * | 2021-02-25 | 2022-09-06 | Tdk株式会社 | ショットキーバリアダイオード |
JP2022129917A (ja) * | 2021-02-25 | 2022-09-06 | Tdk株式会社 | ショットキーバリアダイオード |
KR102654340B1 (ko) * | 2021-08-10 | 2024-04-02 | 아이디얼 파워 인크. | 양방향 트렌치 파워 스위치를 위한 시스템 및 방법 |
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WO2020004437A1 (ja) | 2020-01-02 |
US20210265511A1 (en) | 2021-08-26 |
KR20210011445A (ko) | 2021-02-01 |
CN112352319B (zh) | 2023-10-10 |
EP3817069A4 (en) | 2022-03-16 |
US11393933B2 (en) | 2022-07-19 |
EP3817069A1 (en) | 2021-05-05 |
CN112352319A (zh) | 2021-02-09 |
JP2020004906A (ja) | 2020-01-09 |
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