JP6911453B2 - 半導体装置およびその製造方法 - Google Patents
半導体装置およびその製造方法 Download PDFInfo
- Publication number
- JP6911453B2 JP6911453B2 JP2017063954A JP2017063954A JP6911453B2 JP 6911453 B2 JP6911453 B2 JP 6911453B2 JP 2017063954 A JP2017063954 A JP 2017063954A JP 2017063954 A JP2017063954 A JP 2017063954A JP 6911453 B2 JP6911453 B2 JP 6911453B2
- Authority
- JP
- Japan
- Prior art keywords
- semiconductor region
- semiconductor
- region
- conductive type
- high resistance
- 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 87
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 230000007547 defect Effects 0.000 claims description 47
- 239000000758 substrate Substances 0.000 claims description 34
- 230000006798 recombination Effects 0.000 claims description 29
- 238000005215 recombination Methods 0.000 claims description 29
- 239000012535 impurity Substances 0.000 claims description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 20
- 229910052799 carbon Inorganic materials 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 9
- 230000007774 longterm Effects 0.000 claims description 6
- 230000001737 promoting effect Effects 0.000 claims description 6
- 230000007812 deficiency Effects 0.000 claims description 4
- 238000000137 annealing Methods 0.000 claims description 3
- 238000010894 electron beam technology Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 239000000969 carrier Substances 0.000 description 15
- 238000006243 chemical reaction Methods 0.000 description 13
- 230000006866 deterioration Effects 0.000 description 9
- 230000007423 decrease Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000002019 doping agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005036 potential barrier Methods 0.000 description 2
- 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
- 230000005684 electric field Effects 0.000 description 1
- 229910001195 gallium oxide Inorganic materials 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- 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
- H01L21/18—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 elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/26—Bombardment with radiation
- H01L21/263—Bombardment with radiation with high-energy radiation
- H01L21/265—Bombardment with radiation with high-energy radiation producing ion implantation
- H01L21/26506—Bombardment with radiation with high-energy radiation producing ion implantation in group IV semiconductors
- H01L21/26526—Recoil-implantation
-
- 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
- H01L29/30—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by physical imperfections; having polished or roughened surface
- H01L29/32—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by physical imperfections; having polished or roughened surface the imperfections being within the semiconductor body
-
- 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
- H01L21/048—Making electrodes
- H01L21/0485—Ohmic electrodes
-
- 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
- H01L21/18—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 elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/324—Thermal treatment for modifying the properties of semiconductor bodies, e.g. annealing, sintering
-
- 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
- H01L29/6606—Multistep manufacturing processes of devices having a semiconductor body comprising crystalline silicon carbide 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
-
- 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
-
- 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
- H01L29/868—PIN 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
- H01L29/02—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
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- High Energy & Nuclear Physics (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Bipolar Transistors (AREA)
- Recrystallisation Techniques (AREA)
- Electrodes Of Semiconductors (AREA)
Description
実施の形態にかかる半導体装置の構造について説明する。図1は、実施の形態にかかる半導体装置の構造を示す断面図である。半導体装置として、半導体基板にSiCを用いたSiC PiNダイオードの例を示す。以下の説明では、第1導電型がn型であり、第2導電型がp型である例を用いて説明する。
実施の形態2のPINダイオードは、実施の形態1で説明したバッファ層6を含むほぼ同様の構造を有する。実施の形態2では、高濃度のn+型SiC基板1(例えば、濃度例1×1019/cm3)上に、n型のバッファ層6およびドリフト層2等をエピタキシャル成長中、バッファ層およびドリフト層2の全領域にわたって炭素欠損による欠陥準位を導入するようにC/Si比を調整する。
実施の形態3のPINダイオードは、実施の形態1で説明したバッファ層6を含むほぼ同様の構造を有する。実施の形態3では、高濃度のn+型SiC基板1(例えば、濃度例1×1019/cm3)上に、BPD→TED変換の変換層9をエピタキシャル成長などで形成する。そして、変換層9上に再結合を促進させるn型のバッファ層6をエピタキシャル成長などで形成する(例えば、濃度例1×1018/cm3以上、厚さ1μm以上)。
(2)ドリフト層の全領域に1×1013/cm3の欠陥準位を導入した欠陥準位が導入されたn-型ドリフト層5を持つPINダイオード(従来構造、図4)
(3)5μm厚の高不純物濃度のn型バッファ層4(5×1018/cm3)を持つPIN型ダイオード(従来構造、図5)
(4)1×1013/cm3の欠陥準位をバッファ層にのみ導入した同じ高不純物濃度のバッファ層6を持つPINダイオード(実施の形態1、図1)
2 n-型のドリフト層
3 p型層
4 n型バッファ層
5 欠陥準位が導入されたn-型のドリフト層
6 欠陥準位が導入されたn型のバッファ層
7 表面電極
8 裏面電極
9 変換層
Claims (4)
- 第1導電型の半導体基板上に形成された第1導電型で低不純物濃度の第1高抵抗半導体領域と、
前記半導体基板と対向する面に設けられた第2導電型の第2半導体領域と、
前記第1高抵抗半導体領域と前記半導体基板との間に、前記第1高抵抗半導体領域よりも高不純物濃度の第1導電型の第3半導体領域を再結合促進層として備え、
前記第3半導体領域と前記第1高抵抗半導体領域全領域にわたって炭素欠損による欠陥準位が導入され、かつ、前記第3半導体領域よりも表面側の領域のみ炭素空孔欠陥が減少しており、前記第3半導体領域内に再結合サイトとして欠陥準位が1×1012/cm3以上の高濃度で導入されていることを特徴とする半導体装置。 - 前記第3半導体領域内に前記再結合サイトとして、炭素欠乏欠陥準位であるZ1/2準位を用いることを特徴とする請求項1に記載の半導体装置。
- 第1導電型の半導体基板上に第1導電型で低不純物濃度の第1高抵抗半導体領域を形成する工程と、
前記半導体基板と対向する面に第2導電型の第2半導体領域を形成する工程と、
前記第1高抵抗半導体領域と前記半導体基板との間に、前記第1高抵抗半導体領域よりも高不純物濃度の第1導電型の第3半導体領域を再結合促進層として形成する工程と、
前記第3半導体領域と前記第1高抵抗半導体領域全領域にわたって炭素欠損による欠陥準位を導入する工程と、
炭素注入後の長時間アニールもしくはカーボンキャップした後の長時間酸化により、前記第3半導体領域よりも表面側の領域のみ炭素空孔欠陥を減少させる工程と、を含み、
前記第3半導体領域内に再結合サイトとして欠陥準位を1×1012/cm3以上の高濃度で導入したことを特徴とする半導体装置の製造方法。 - 前記第3半導体領域に電子線照射もしくはプロトンを照射し所定の欠陥準位を導入することを特徴とする請求項3に記載の半導体装置の製造方法。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017063954A JP6911453B2 (ja) | 2017-03-28 | 2017-03-28 | 半導体装置およびその製造方法 |
US15/921,276 US10510543B2 (en) | 2017-03-28 | 2018-03-14 | Semiconductor device and method of manufacturing thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017063954A JP6911453B2 (ja) | 2017-03-28 | 2017-03-28 | 半導体装置およびその製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2018166196A JP2018166196A (ja) | 2018-10-25 |
JP6911453B2 true JP6911453B2 (ja) | 2021-07-28 |
Family
ID=63671739
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2017063954A Active JP6911453B2 (ja) | 2017-03-28 | 2017-03-28 | 半導体装置およびその製造方法 |
Country Status (2)
Country | Link |
---|---|
US (1) | US10510543B2 (ja) |
JP (1) | JP6911453B2 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7023882B2 (ja) * | 2019-02-04 | 2022-02-22 | 株式会社東芝 | 半導体装置の製造方法、基板の製造方法、半導体装置、基板、及び、基板の製造装置 |
JP7443669B2 (ja) * | 2019-03-27 | 2024-03-06 | 富士電機株式会社 | 炭化珪素エピタキシャル基板、炭化珪素エピタキシャル基板の製造方法、炭化珪素半導体装置および炭化珪素半導体装置の製造方法 |
CN114424343A (zh) | 2019-09-27 | 2022-04-29 | 学校法人关西学院 | SiC衬底、SiC衬底的制造方法、SiC半导体装置以及SiC半导体装置的制造方法 |
CN114792688A (zh) * | 2021-01-26 | 2022-07-26 | 上峰科技股份有限公司 | 电子系统、与宽带隙半导体器件集成的可编程电阻存储器及其操作方法 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6054369A (en) * | 1997-06-30 | 2000-04-25 | Intersil Corporation | Lifetime control for semiconductor devices |
JP3643100B2 (ja) * | 2002-10-04 | 2005-04-27 | 松下電器産業株式会社 | 半導体装置 |
JP2009088223A (ja) | 2007-09-28 | 2009-04-23 | Hitachi Cable Ltd | 炭化珪素半導体基板およびそれを用いた炭化珪素半導体装置 |
JP5374883B2 (ja) * | 2008-02-08 | 2013-12-25 | 富士電機株式会社 | 半導体装置およびその製造方法 |
JP2011109018A (ja) * | 2009-11-20 | 2011-06-02 | Kansai Electric Power Co Inc:The | バイポーラ半導体素子 |
JP5759393B2 (ja) * | 2012-01-12 | 2015-08-05 | 住友電気工業株式会社 | 炭化珪素半導体装置の製造方法 |
US9590047B2 (en) * | 2012-04-04 | 2017-03-07 | Fairchild Semiconductor Corporation | SiC bipolar junction transistor with reduced carrier lifetime in collector and a defect termination layer |
US20140374882A1 (en) * | 2013-06-21 | 2014-12-25 | Infineon Technologies Austria Ag | Semiconductor Device with Recombination Centers and Method of Manufacturing |
JP6183080B2 (ja) * | 2013-09-09 | 2017-08-23 | 住友電気工業株式会社 | 炭化珪素半導体装置およびその製造方法 |
JP6271356B2 (ja) * | 2014-07-07 | 2018-01-31 | 株式会社東芝 | 半導体装置の製造方法 |
DE112015000610T5 (de) * | 2014-09-04 | 2016-11-17 | Fuji Electric Co., Ltd. | Halbleitervorrichtung und Verfahren zum Herstellen einer Halbleitervorrichtung |
JP2016100455A (ja) * | 2014-11-21 | 2016-05-30 | 三菱電機株式会社 | 半導体装置及びその製造方法 |
JP6415946B2 (ja) * | 2014-11-26 | 2018-10-31 | 株式会社東芝 | 半導体装置の製造方法及び半導体装置 |
JP2016127177A (ja) * | 2015-01-06 | 2016-07-11 | 住友電気工業株式会社 | 炭化珪素基板、炭化珪素半導体装置および炭化珪素基板の製造方法 |
JP6690198B2 (ja) * | 2015-11-16 | 2020-04-28 | 富士電機株式会社 | 炭化珪素半導体装置の製造方法 |
JP6584966B2 (ja) * | 2016-01-12 | 2019-10-02 | 株式会社東芝 | 半導体装置、半導体装置の製造方法、インバータ回路、駆動装置、車両、及び昇降機 |
JP6820738B2 (ja) * | 2016-12-27 | 2021-01-27 | 三菱電機株式会社 | 半導体装置、電力変換装置および半導体装置の製造方法 |
-
2017
- 2017-03-28 JP JP2017063954A patent/JP6911453B2/ja active Active
-
2018
- 2018-03-14 US US15/921,276 patent/US10510543B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
JP2018166196A (ja) | 2018-10-25 |
US10510543B2 (en) | 2019-12-17 |
US20180286683A1 (en) | 2018-10-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5328930B2 (ja) | 電流シフト領域を有する半導体デバイスおよび関連方法 | |
JP5101985B2 (ja) | ジャンクションバリアショットキーダイオード | |
JP6911453B2 (ja) | 半導体装置およびその製造方法 | |
EP3451388A1 (en) | Trench mos-type schottky diode | |
WO2017073749A1 (ja) | エピタキシャルウェハの製造方法、エピタキシャルウェハ、半導体装置の製造方法及び半導体装置 | |
JP5172916B2 (ja) | 半導体整流装置 | |
US20140346527A1 (en) | Method of fabricating a gallium nitride p-i-n diode using implantation | |
JP6111572B2 (ja) | 半導体装置および半導体装置の製造方法 | |
JP6740986B2 (ja) | 炭化珪素半導体装置およびその製造方法 | |
JP2019537274A (ja) | ゲート・トレンチと、埋め込まれた終端構造とを有するパワー半導体デバイス、及び、関連方法 | |
JP2006332127A (ja) | 電力用半導体装置 | |
US9887263B2 (en) | Silicon carbide semiconductor device and method of manufacturing the same | |
US9349797B2 (en) | SiC devices with high blocking voltage terminated by a negative bevel | |
JPWO2011024214A1 (ja) | 高速回復ダイオード | |
US8592903B2 (en) | Bipolar semiconductor device and manufacturing method | |
JP2019067982A (ja) | 炭化珪素半導体装置 | |
US20230411536A1 (en) | Schottky rectifier with surge-current ruggedness | |
JP7119521B2 (ja) | 炭化珪素半導体装置及びその製造方法 | |
CN111146294A (zh) | 肖特基二极管及其制备方法 | |
US8648447B2 (en) | Semiconductor rectifier device | |
US11004986B2 (en) | Semiconductor device including adjacent semiconductor layers | |
JP2009054659A (ja) | 窒化ガリウム半導体装置の製造方法 | |
US10832911B2 (en) | Semiconductor device | |
JP2018029104A (ja) | 半導体装置およびその製造方法 | |
JP2017098318A (ja) | 半導体装置およびその製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A711 | Notification of change in applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A711 Effective date: 20180607 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20200214 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20210105 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20201225 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20210305 |
|
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: 20210608 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20210621 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6911453 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |