JP6149942B2 - 半導体装置の製造方法 - Google Patents
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- 239000004065 semiconductor Substances 0.000 title claims description 80
- 238000004519 manufacturing process Methods 0.000 title claims description 24
- 239000012535 impurity Substances 0.000 claims description 124
- 239000000758 substrate Substances 0.000 claims description 39
- 230000001133 acceleration Effects 0.000 claims description 30
- 238000005468 ion implantation Methods 0.000 claims description 25
- 238000009792 diffusion process Methods 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 12
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 8
- 229910052698 phosphorus Inorganic materials 0.000 claims description 8
- 239000011574 phosphorus Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 description 20
- 230000000052 comparative effect Effects 0.000 description 10
- 230000015556 catabolic process Effects 0.000 description 4
- 238000002513 implantation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 239000000969 carrier Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005224 laser annealing Methods 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D12/00—Bipolar devices controlled by the field effect, e.g. insulated-gate bipolar transistors [IGBT]
- H10D12/411—Insulated-gate bipolar transistors [IGBT]
- H10D12/441—Vertical IGBTs
-
- 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
- H01L21/0405—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 semiconducting carbon, e.g. diamond, diamond-like carbon
- H01L21/041—Making n- or p-doped regions
- H01L21/0415—Making n- or p-doped regions using ion implantation
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- 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
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D12/00—Bipolar devices controlled by the field effect, e.g. insulated-gate bipolar transistors [IGBT]
- H10D12/01—Manufacture or treatment
- H10D12/031—Manufacture or treatment of IGBTs
- H10D12/032—Manufacture or treatment of IGBTs of vertical IGBTs
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- 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
- H10D62/13—Semiconductor regions connected to electrodes carrying current to be rectified, amplified or switched, e.g. source or drain regions
- H10D62/137—Collector regions of BJTs
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- 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
- H10D62/13—Semiconductor regions connected to electrodes carrying current to be rectified, amplified or switched, e.g. source or drain regions
- H10D62/149—Source or drain regions of field-effect devices
- H10D62/151—Source or drain regions of field-effect devices of IGFETs
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- 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
- H01L21/26513—Bombardment with radiation with high-energy radiation producing ion implantation in group IV semiconductors of electrically active species
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- 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
- H10D62/83—Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials being Group IV materials, e.g. B-doped Si or undoped Ge
- H10D62/834—Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials being Group IV materials, e.g. B-doped Si or undoped Ge further characterised by the dopants
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- Computer Hardware Design (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Power Engineering (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
- Electrodes Of Semiconductors (AREA)
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Description
図1は、本発明の実施の形態1に係る半導体装置の製造方法で製造された半導体装置10の断面図である。半導体装置10はパンチスルー型IGBTである。半導体装置10は例えばn型(以後、第1導電型という)の単結晶シリコンで形成された半導体基板12を備えている。半導体基板12は第1主面12Aと、第1主面12Aと反対の面である第2主面12Bとを有している。半導体基板12には第1導電型のドリフト層12aが形成されている。
本発明の実施の形態2に係る半導体装置の製造方法は、実施の形態1との共通点が多いので、実施の形態1との相違点を中心に説明する。図9は、本発明の実施の形態2の第1工程を説明する断面図である。第1工程における複数回のイオン注入は、第2主面12B側ほど第1導電型不純物のドーズ量が多くなるように行う。
Claims (5)
- 第1主面と前記第1主面と反対の面である第2主面とを有する半導体基板の前記第2主面に、加速エネルギの異なる複数回のイオン注入でリンを注入し、前記半導体基板に第1不純物領域を形成する第1工程と、
前記第2主面に、前記複数回のイオン注入よりも低い加速エネルギで第2導電型不純物をイオン注入し、前記半導体基板に、前記第1不純物領域との間に不純物が注入されない無注入領域を残すように第2不純物領域を形成する第2工程と、
前記リンでバッファ層を形成し、前記第2導電型不純物でコレクタ層を形成し、前記バッファ層と前記コレクタ層の間に前記リンと前記第2導電型不純物が拡散しない無拡散領域を残すように前記半導体基板に熱処理を施す熱処理工程と、
前記コレクタ層に接するコレクタ電極を形成する工程と、を備えたことを特徴とする半導体装置の製造方法。 - 前記リンは、1〜10MeVの加速エネルギで前記第2主面に注入し、
前記第2導電型不純物は、5〜100keVの加速エネルギで前記第2主面に注入することを特徴とする請求項1に記載の半導体装置の製造方法。 - 前記複数回のイオン注入のドーズ量は均一であることを特徴とする請求項1又は2に記載の半導体装置の製造方法。
- 第1主面と前記第1主面と反対の面である第2主面とを有する半導体基板の前記第2主面に、加速エネルギの異なる複数回のイオン注入で第1導電型不純物を注入し、前記半導体基板に第1不純物領域を形成する第1工程と、
前記第2主面に、前記複数回のイオン注入よりも低い加速エネルギで第2導電型不純物をイオン注入し、前記半導体基板に、前記第1不純物領域との間に不純物が注入されない無注入領域を残すように第2不純物領域を形成する第2工程と、
前記第1導電型不純物でバッファ層を形成し、前記第2導電型不純物でコレクタ層を形成し、前記バッファ層と前記コレクタ層の間に前記第1導電型不純物と前記第2導電型不純物が拡散しない無拡散領域を残すように前記半導体基板に熱処理を施す熱処理工程と、
前記コレクタ層に接するコレクタ電極を形成する工程と、を備え、
前記複数回のイオン注入は、前記第2主面側ほど前記第1導電型不純物のドーズ量が多くなるように行い、
前記バッファ層の不純物濃度のプロファイルのピークは1つだけであることを特徴とする半導体装置の製造方法。 - 前記第1工程では、前記第2主面に対して垂直に前記第1導電型不純物を注入することを特徴とする請求項4に記載の半導体装置の製造方法。
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PCT/JP2013/083458 WO2015087439A1 (ja) | 2013-12-13 | 2013-12-13 | 半導体装置の製造方法 |
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US (1) | US9673308B2 (ja) |
EP (1) | EP3082167B1 (ja) |
JP (1) | JP6149942B2 (ja) |
KR (1) | KR101838829B1 (ja) |
CN (1) | CN105830220B (ja) |
TW (1) | TWI553714B (ja) |
WO (1) | WO2015087439A1 (ja) |
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US9825128B2 (en) * | 2015-10-20 | 2017-11-21 | Maxpower Semiconductor, Inc. | Vertical power transistor with thin bottom emitter layer and dopants implanted in trenches in shield area and termination rings |
JP6964566B2 (ja) * | 2018-08-17 | 2021-11-10 | 三菱電機株式会社 | 半導体装置およびその製造方法 |
CN113948375A (zh) * | 2020-07-16 | 2022-01-18 | 珠海格力电器股份有限公司 | 一种提高半导体有源区杂质激活率的方法及其应用 |
JP2022165840A (ja) | 2021-04-20 | 2022-11-01 | 富士電機株式会社 | 解析装置、解析方法およびプログラム |
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JP2001077357A (ja) | 1999-08-31 | 2001-03-23 | Toshiba Corp | 半導体装置 |
US6482681B1 (en) | 2000-05-05 | 2002-11-19 | International Rectifier Corporation | Hydrogen implant for buffer zone of punch-through non epi IGBT |
JP3906076B2 (ja) * | 2001-01-31 | 2007-04-18 | 株式会社東芝 | 半導体装置 |
JP2004079878A (ja) * | 2002-08-21 | 2004-03-11 | Toshiba Corp | 半導体装置及びその製造方法 |
JP2004247593A (ja) | 2003-02-14 | 2004-09-02 | Toshiba Corp | 半導体装置及びその製造方法 |
DE102005026408B3 (de) | 2005-06-08 | 2007-02-01 | Infineon Technologies Ag | Verfahren zur Herstellung einer Stoppzone in einem Halbleiterkörper und Halbleiterbauelement mit einer Stoppzone |
DE102005049506B4 (de) * | 2005-10-13 | 2011-06-09 | Infineon Technologies Austria Ag | Vertikales Halbleiterbauelement |
JP5155536B2 (ja) * | 2006-07-28 | 2013-03-06 | 一般財団法人電力中央研究所 | SiC結晶の質を向上させる方法およびSiC半導体素子の製造方法 |
JP5365009B2 (ja) | 2008-01-23 | 2013-12-11 | 富士電機株式会社 | 半導体装置およびその製造方法 |
KR101913322B1 (ko) * | 2010-12-24 | 2018-10-30 | 퀄컴 인코포레이티드 | 반도체 소자들을 위한 트랩 리치 층 |
JP5639940B2 (ja) * | 2011-03-25 | 2014-12-10 | 新電元工業株式会社 | 絶縁ゲート型バイポーラトランジスタ |
KR20120140411A (ko) * | 2011-06-21 | 2012-12-31 | (주) 트리노테크놀로지 | 전력 반도체 소자 및 그 제조 방법 |
KR101982737B1 (ko) | 2012-03-30 | 2019-05-27 | 후지 덴키 가부시키가이샤 | 반도체 장치의 제조방법 |
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- 2013-12-13 WO PCT/JP2013/083458 patent/WO2015087439A1/ja active Application Filing
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EP3082167A1 (en) | 2016-10-19 |
TW201523708A (zh) | 2015-06-16 |
US9673308B2 (en) | 2017-06-06 |
CN105830220A (zh) | 2016-08-03 |
KR20160086368A (ko) | 2016-07-19 |
KR101838829B1 (ko) | 2018-03-14 |
EP3082167A4 (en) | 2017-08-02 |
JPWO2015087439A1 (ja) | 2017-03-16 |
TWI553714B (zh) | 2016-10-11 |
WO2015087439A1 (ja) | 2015-06-18 |
EP3082167B1 (en) | 2021-02-17 |
CN105830220B (zh) | 2019-05-28 |
US20160254372A1 (en) | 2016-09-01 |
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