JP5972922B2 - 半導体デバイスおよびそれを製造するための方法 - Google Patents
半導体デバイスおよびそれを製造するための方法 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims description 137
- 238000000034 method Methods 0.000 title claims description 34
- 238000004519 manufacturing process Methods 0.000 title claims description 23
- 239000000758 substrate Substances 0.000 claims description 77
- 238000000926 separation method Methods 0.000 claims description 18
- 150000002500 ions Chemical class 0.000 claims description 16
- 239000013067 intermediate product Substances 0.000 claims description 11
- 238000000151 deposition Methods 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000013078 crystal Substances 0.000 claims description 5
- 238000005468 ion implantation Methods 0.000 claims description 4
- 238000001465 metallisation Methods 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000002513 implantation Methods 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 238000002161 passivation Methods 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims 3
- 239000012535 impurity Substances 0.000 claims 1
- 238000012805 post-processing Methods 0.000 claims 1
- 238000011282 treatment Methods 0.000 description 8
- 239000000126 substance Substances 0.000 description 6
- 230000008021 deposition Effects 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000013021 overheating Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005530 etching Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002800 charge carrier Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
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- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
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- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02367—Substrates
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- 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
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- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
- H01L21/7806—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices involving the separation of the active layers from a substrate
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- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
- H01L21/7806—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices involving the separation of the active layers from a substrate
- H01L21/7813—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices involving the separation of the active layers from a substrate leaving a reusable substrate, e.g. epitaxial lift off
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- 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
- H01L21/20—Deposition of semiconductor materials on a substrate, e.g. epitaxial growth solid phase epitaxy
- H01L21/2003—Deposition of semiconductor materials on a substrate, e.g. epitaxial growth solid phase epitaxy characterised by the substrate
- H01L21/2007—Bonding of semiconductor wafers to insulating substrates or to semiconducting substrates using an intermediate insulating layer
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- 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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- 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
- H10D62/832—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 being Group IV materials comprising two or more elements, e.g. SiGe
- H10D62/8325—Silicon carbide
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
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- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Electrodes Of Semiconductors (AREA)
- Recrystallisation Techniques (AREA)
Description
12 多孔質SiC層
14 単結晶SiC層
15 正面
20 第1の半導体層
22 薄い残留層
25 裏面
30 Pドープ領域
40 第2の半導体層
50 金属接触領域
60 イオン
70 補助キャリア
75 半導体デバイス
100 レーザ光
110 ジェット水流
301〜305 ステップ
Claims (20)
- 半導体デバイスを製造する方法であって、
SiCを含む半導体基板を設けるステップと、
前記半導体基板と向き合わない裏面および前記半導体基板に向き合う正面を有する、少なくとも1つの半導体デバイスを前記半導体基板上に設けるステップと、
前記半導体デバイスの前記裏面に接触層を設けるステップと、
前記接触層を補助キャリアに接合するステップと、
前記半導体基板から前記少なくとも1つの半導体デバイスを分離するステップと
を含み、
少なくとも1つの半導体デバイスを前記半導体基板上に設けるステップは、前記半導体基板上にSiCを含む第1の層(20)を形成することを含み、前記半導体基板の周縁部に対応する前記第1の層(20)の周縁部にPドープト領域(30)が形成される、方法。 - 前記半導体デバイスの前記正面が、前記半導体基板から分離された後に後処理され、前記後処理が、メタライゼーションを形成するステップと、パッシベーションを形成するステップとのうちの少なくとも1つを含む、請求項1に記載の方法。
- 前記半導体基板が、前記半導体デバイスから分離された後に、さらなる半導体デバイスを製造するために再使用される、請求項1に記載の方法。
- 前記半導体基板が、前記再使用の前に表面処理される、請求項3に記載の方法。
- 前記補助キャリアから前記半導体デバイスを分離するステップをさらに含む、請求項1に記載の方法。
- 前記少なくとも1つの半導体デバイスが、ゲート酸化膜を含まない、請求項1に記載の方法。
- 前記補助キャリアが、シリコン、金属、カーボン、セラミック、およびガラスからなる群から選択される要素のうちの少なくとも1つを含む、請求項1に記載の方法。
- 前記半導体デバイスが、ダイオード、ショットキー・ダイオード、マージドPINショットキー・ダイオード、JFET、およびMOSFETのうちの少なくとも1つである、請求項1に記載の方法。
- 前記少なくとも1つの半導体デバイスと前記半導体基板との間に境界領域が存在し、分離を引き起こすガスの微小気泡を生成するために、前記境界領域にイオンを注入することと、それに続いて前記境界領域を加熱することとによって前記分離するステップが実行される、請求項1に記載の方法。
- 前記イオンが陽子を含む、請求項9に記載の方法。
- 前記イオンが陽子を含み、前記陽子の注入エネルギーは、前記少なくとも1つの半導体デバイスと前記半導体基板との間の前記境界領域に前記陽子が堆積するように適合される、請求項9に記載の方法。
- 前記イオンが、300keV〜1.5MeVのエネルギーを有する陽子を含む、請求項9に記載の方法。
- 前記半導体基板から前記少なくとも1つの半導体デバイスを分離するステップが、分離を引き起こす局所的な加熱を実現するために、前記基板を介して、前記少なくとも1つの半導体デバイスと前記半導体基板との間の前記境界領域にレーザ光を加えるステップを含む、請求項1に記載の方法。
- 前記半導体基板から前記少なくとも1つの半導体デバイスを分離するステップが、
前記半導体基板と前記少なくとも1つの半導体デバイスとの間に中間層を設けるステップと、
それに続いて前記中間層を機械的に操作するステップと
を含む、請求項1に記載の方法。 - 前記中間層が、多孔質SiCおよび単結晶層のうちの少なくとも1つを含み、流体ジェットを用いて前記中間層を操作することによって、前記半導体基板が前記半導体デバイスから分離される、請求項14に記載の方法。
- 前記半導体基板の厚さが0.2〜1.0mmである、請求項1に記載の方法。
- 少なくとも1つの半導体デバイスを前記半導体基板上に設けるステップは、前記半導体基板上にSiCを含む第1の層(20)を第1のエピタキシャル層として堆積すること、および第2のエピタキシャル層を前記第1のエピタキシャル層上に堆積させることとを含む、請求項1に記載の方法。
- 半導体デバイスを製造するための中間生成物であって、
SiCを含む半導体基板と、
前記半導体基板と向き合わない裏面および前記半導体基板に向き合う正面を有する、前記半導体基板上の半導体デバイスと、
前記半導体デバイスの前記裏面の接触層と、
前記接触層に接合された補助キャリアと
を含み、
前記半導体デバイスは、前記半導体基板上に形成されるSiCを含む第1の層(20)を含み、前記半導体基板の周縁部に対応する前記第1の層(20)の周縁部にPドープト領域(30)が形成される、中間生成物。 - イオン注入によって高い不純物原子濃度を示す、前記半導体デバイスと前記半導体基板との間の中間領域をさらに含む、請求項18に記載の中間生成物。
- 前記イオンが陽子を含む、請求項19に記載の中間生成物。
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US13/791,071 US9875935B2 (en) | 2013-03-08 | 2013-03-08 | Semiconductor device and method for producing the same |
US13/791,071 | 2013-03-08 |
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US11721547B2 (en) | 2013-03-14 | 2023-08-08 | Infineon Technologies Ag | Method for manufacturing a silicon carbide substrate for an electrical silicon carbide device, a silicon carbide substrate and an electrical silicon carbide device |
DE102017119568B4 (de) * | 2017-08-25 | 2024-01-04 | Infineon Technologies Ag | Siliziumkarbidbauelemente und Verfahren zum Herstellen von Siliziumkarbidbauelementen |
DE102019106124A1 (de) | 2018-03-22 | 2019-09-26 | Infineon Technologies Ag | Bilden von Halbleitervorrichtungen in Siliciumcarbid |
DE102019111377A1 (de) * | 2018-05-28 | 2019-11-28 | Infineon Technologies Ag | Verfahren zum Verarbeiten eines Siliziumkarbid-Wafers und ein Siliziumkarbid-Halbleiterbauelement |
DE102018116051A1 (de) * | 2018-07-03 | 2020-01-09 | Infineon Technologies Ag | Halbleitervorrichtung und verfahren zum herstellen einer halbleitervorrichtung |
DE102019004261A1 (de) * | 2019-06-18 | 2020-12-24 | lnfineon Technologies AG | Verfahren zum Bearbeiten einer Substratanordnung und Wafer-Verbundstruktur |
CN114423890B (zh) * | 2019-09-27 | 2024-10-25 | 学校法人关西学院 | SiC半导体装置的制造方法和SiC半导体装置 |
DE102020215007A1 (de) | 2020-11-30 | 2022-06-02 | Robert Bosch Gesellschaft mit beschränkter Haftung | Verfahren zur Herstellung eines vertikalen Leistungshalbleiterbauelements |
CN113178383A (zh) * | 2021-03-10 | 2021-07-27 | 华为技术有限公司 | 一种碳化硅基板、碳化硅器件及其基板减薄方法 |
CN113690183B (zh) * | 2021-07-06 | 2024-06-25 | 华为数字能源技术有限公司 | 晶圆的减薄方法 |
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CN104037070A (zh) | 2014-09-10 |
US9875935B2 (en) | 2018-01-23 |
FR3003086B1 (fr) | 2018-03-16 |
CN104037070B (zh) | 2018-05-04 |
JP2014179605A (ja) | 2014-09-25 |
US20140252373A1 (en) | 2014-09-11 |
FR3003086A1 (fr) | 2014-09-12 |
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