JP5043333B2 - 親水性Si表面と界面接合酸化物の溶解とを用いるSi間擬似疎水性ウェハ接合 - Google Patents
親水性Si表面と界面接合酸化物の溶解とを用いるSi間擬似疎水性ウェハ接合 Download PDFInfo
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- JP5043333B2 JP5043333B2 JP2005363874A JP2005363874A JP5043333B2 JP 5043333 B2 JP5043333 B2 JP 5043333B2 JP 2005363874 A JP2005363874 A JP 2005363874A JP 2005363874 A JP2005363874 A JP 2005363874A JP 5043333 B2 JP5043333 B2 JP 5043333B2
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- 238000004090 dissolution Methods 0.000 title description 33
- 238000000034 method Methods 0.000 claims description 72
- 235000012431 wafers Nutrition 0.000 claims description 70
- 238000000137 annealing Methods 0.000 claims description 56
- 229910052710 silicon Inorganic materials 0.000 claims description 34
- 239000010703 silicon Substances 0.000 claims description 33
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 32
- 230000001681 protective effect Effects 0.000 claims description 25
- 239000004065 semiconductor Substances 0.000 claims description 20
- 239000013078 crystal Substances 0.000 claims description 17
- 229910052760 oxygen Inorganic materials 0.000 claims description 17
- 239000007789 gas Substances 0.000 claims description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 230000001590 oxidative effect Effects 0.000 claims description 9
- 238000000151 deposition Methods 0.000 claims description 7
- 238000005304 joining Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 5
- 238000004381 surface treatment Methods 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229910008045 Si-Si Inorganic materials 0.000 claims description 3
- 229910006411 Si—Si Inorganic materials 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 2
- 229910052736 halogen Inorganic materials 0.000 claims description 2
- 150000002367 halogens Chemical class 0.000 claims description 2
- 229910052734 helium Inorganic materials 0.000 claims description 2
- 229910052743 krypton Inorganic materials 0.000 claims description 2
- 229910052754 neon Inorganic materials 0.000 claims description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims 3
- QPJSUIGXIBEQAC-UHFFFAOYSA-N n-(2,4-dichloro-5-propan-2-yloxyphenyl)acetamide Chemical compound CC(C)OC1=CC(NC(C)=O)=C(Cl)C=C1Cl QPJSUIGXIBEQAC-UHFFFAOYSA-N 0.000 claims 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 27
- 230000008569 process Effects 0.000 description 27
- 239000000758 substrate Substances 0.000 description 26
- 239000000463 material Substances 0.000 description 22
- 230000002209 hydrophobic effect Effects 0.000 description 12
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 7
- 230000008021 deposition Effects 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000005530 etching Methods 0.000 description 4
- 238000009832 plasma treatment Methods 0.000 description 4
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 4
- 229910052814 silicon oxide Inorganic materials 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 description 4
- 238000011282 treatment Methods 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 238000003795 desorption Methods 0.000 description 3
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 2
- 238000003917 TEM image Methods 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 229910021417 amorphous silicon Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
- 229910003811 SiGeC Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005280 amorphization Methods 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
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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
- H01L21/185—Joining of semiconductor bodies for junction formation
- H01L21/187—Joining of semiconductor bodies for junction formation by direct bonding
-
- 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
- H01L21/70—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
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/76—Making of isolation regions between components
- H01L21/762—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
- H01L21/7624—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using semiconductor on insulator [SOI] technology
- H01L21/76251—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using semiconductor on insulator [SOI] technology using bonding techniques
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- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
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- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Element Separation (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Description
接合されることになるSi表面を有するハンドル・ウェハを選択するステップと、
接合されることになるSi表面を有し、好ましくは、ドナー・ウェハ表面から所定の深さの切断面又はエッチング停止領域を含むドナー・ウェハを選択するステップと、
2つのウェハの接合面に当該技術分野に周知の洗浄及び表面処理を施し、いずれの接合面上にも約3nmから5nmまでより多い酸化物をもたらすことなく、該接合面を親水性のままにするステップと、
当該技術分野に周知の方法によってウェハを接合するステップと、
ドナー・ウェハの望ましくない部分を除去し、移送されたドナー・ウェハを残すステップと、
必要に応じて移送されたドナー・ウェハ層上に表面処理を行い、所定の表面仕上げ及び厚さを有する接合されたドナー・ウェハを残すステップと、
本発明の新規な酸化物溶解プロセスを実行し、接合面に残っている界面材料を除去するステップと、
を含む。
250℃−950℃、5℃/分、Ar+1.2%O2、
950℃−1200℃、3℃/分、Ar+0.13%O2、
1200℃−1325℃、1℃/分、Ar+0.063%O2、
1325℃/5時間、Ar+0.063%O2、
1325℃−1200℃、−3℃/分、Ar+0%O2、
1200℃−400℃、−5℃/分、N2、
を含むアニールが施された。
112、320:ハンドル・ウェハ
114、186:ドナー・ウェハ
300、340:基板構造体
182、330:界面酸化物層
Claims (15)
- 半導体構造体を製造する方法であって、
2つのシリコン表面の各々に存在する3nmから5nmまでの厚さより薄い酸化物層を介して当該2つのシリコン表面を接合することにより接合構造体を形成するステップと、
250℃から1325℃までの温度範囲においてO 2 が0.02%から2%の濃度範囲で存在する雰囲気内で、前記2つのシリコン表面の各々に存在する前記酸化物層を含む前記接合構造体をアニールするステップを含み、
前記アニールするステップにより前記接合構造体から前記酸化物層が完全に除去され、前記2つのシリコン表面が互いに直接接合されることを特徴とする方法。 - 前記2つのシリコン表面が、第1の単結晶表面配向を有する第1のシリコン表面と、第2の単結晶表面配向を有する第2のシリコン表面とを含み、前記第2の単結晶表面配向が、前記第1の単結晶表面配向と異なる、請求項1に記載の方法。
- 前記アニールするステップが、0.1時間から24時間までの時間、前記温度範囲で行われる、請求項1に記載の方法。
- 酸化物のないSi間界面が存在する、接合されたSiオンSiウェハ対を形成する方法であって、
接合されることになる第1のSi表面を有するハンドル・ウェハを選択するステップと、
接合されることになる第2のSi表面を有するドナー・ウェハを選択するステップと、
前記2つのウェハの接合面に洗浄及び表面処理を施して、いずれの接合面上にも3nmから5nmまでより多い酸化物をもたらすことなく、親水性接合のための表面を形成するステップと、
前記ウェハを接合するステップと、
前記ドナー・ウェハの望ましくない部分を除去し、転写されたドナー・ウェハを残すステップと、
250℃から1325℃までの温度範囲においてO 2 が0.02%から2%の濃度範囲で存在する雰囲気内で、前記第1のSi表面と前記第2のSi表面とに形成された酸化物層を含む接合されたウェハ対をアニールするステップと、を含み、
前記アニールするステップにより前記ウェハ対から前記酸化物層が完全に除去され、前記第1のSi表面と前記第2のSi表面とが互いに直接接合されることを特徴とする方法。 - 前記ドナー・ウェハは、前記Si表面から所定の深さの切断面又はエッチング停止領域を含む、請求項4に記載の方法。
- 前記残すステップと前記アニールするステップとの間に、所定の表面仕上げと厚さを有する前記接合されたドナー・ウェハを残すように表面処理を施すステップをさらに含む、請求項4に記載の方法。
- 前記第1のSi表面が第1の単結晶表面配向を有し、前記第2のSi表面が第2の単結晶表面配向を有し、前記第2の単結晶表面配向が、前記第1の単結晶表面配向と異なる、請求項4に記載の方法。
- 前記第1及び第2の単結晶表面配向が、(100)、(110)、又は(111)表面配向を含む、請求項2または7に記載の方法。
- 前記酸化物がシリコン及び酸素を含む、請求項1または4に記載の方法。
- 前記アニールするステップが、0.5時間から24時間までの時間、前記温度範囲で行われる、請求項4に記載の方法。
- 前記アニールするステップが、Ar、He、Kr、Ne、Xe、N2 、H2、H含有ガス、C含有ガス、F含有ガス、Cl含有ガス、Si含有ガス、ハロゲン含有ガス、及びこれらの混合物からなる群から選択される少なくとも1つのガスを含む前記雰囲気において行われる、請求項1または4に記載の方法。
- 前記雰囲気が酸化性である、請求項11に記載の方法。
- 前記アニールするステップの前に処分可能な保護キャップ層を堆積させるステップと、該アニールするステップ後に前記処分可能な保護キャップ層を除去するステップとをさらに含む、請求項1または4に記載の方法。
- 前記アニールするステップ中に生成される何らかの表面酸化物層を除去するステップをさらに含む、請求項1または4に記載の方法。
- 前記除去するステップが、フッ化水素酸(HF)を含有する湿式エッチングを含む、請求項14に記載の方法。
Applications Claiming Priority (2)
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US11/031,165 | 2005-01-07 | ||
US11/031,165 US8138061B2 (en) | 2005-01-07 | 2005-01-07 | Quasi-hydrophobic Si-Si wafer bonding using hydrophilic Si surfaces and dissolution of interfacial bonding oxide |
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JP2006191029A JP2006191029A (ja) | 2006-07-20 |
JP2006191029A5 JP2006191029A5 (ja) | 2008-11-13 |
JP5043333B2 true JP5043333B2 (ja) | 2012-10-10 |
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US (3) | US8138061B2 (ja) |
JP (1) | JP5043333B2 (ja) |
CN (1) | CN1818154A (ja) |
TW (1) | TW200632992A (ja) |
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US9418963B2 (en) | 2012-09-25 | 2016-08-16 | Arizona Board Of Regents, A Body Corporate Of The State Of Arizona Acting For And On Behalf Of Arizona State University | Methods for wafer bonding, and for nucleating bonding nanophases |
FR3007891B1 (fr) * | 2013-06-28 | 2016-11-25 | Soitec Silicon On Insulator | Procede de fabrication d'une structure composite |
JP6061251B2 (ja) * | 2013-07-05 | 2017-01-18 | 株式会社豊田自動織機 | 半導体基板の製造方法 |
US9601368B2 (en) * | 2015-07-16 | 2017-03-21 | Infineon Technologies Ag | Semiconductor device comprising an oxygen diffusion barrier and manufacturing method |
US9741685B2 (en) * | 2015-08-07 | 2017-08-22 | Lam Research Corporation | Methods for directly bonding silicon to silicon or silicon carbide to silicon carbide |
FR3057705B1 (fr) * | 2016-10-13 | 2019-04-12 | Soitec | Procede de dissolution d'un oxyde enterre dans une plaquette de silicium sur isolant |
EP3586356B1 (de) * | 2017-02-21 | 2023-11-08 | EV Group E. Thallner GmbH | Verfahren zum bonden von substraten |
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JP3175323B2 (ja) * | 1991-08-26 | 2001-06-11 | 株式会社デンソー | 半導体基板の製造方法 |
JP2820120B2 (ja) * | 1996-06-03 | 1998-11-05 | 日本電気株式会社 | 半導体基板の製造方法 |
JP4273540B2 (ja) * | 1998-07-21 | 2009-06-03 | 株式会社Sumco | 貼り合わせ半導体基板及びその製造方法 |
JP2004031715A (ja) * | 2002-06-27 | 2004-01-29 | Shin Etsu Handotai Co Ltd | Soiウエーハの製造方法及びsoiウエーハ |
US7153757B2 (en) | 2002-08-29 | 2006-12-26 | Analog Devices, Inc. | Method for direct bonding two silicon wafers for minimising interfacial oxide and stresses at the bond interface, and an SOI structure |
US7329923B2 (en) | 2003-06-17 | 2008-02-12 | International Business Machines Corporation | High-performance CMOS devices on hybrid crystal oriented substrates |
US7023055B2 (en) | 2003-10-29 | 2006-04-04 | International Business Machines Corporation | CMOS on hybrid substrate with different crystal orientations using silicon-to-silicon direct wafer bonding |
US20050116290A1 (en) | 2003-12-02 | 2005-06-02 | De Souza Joel P. | Planar substrate with selected semiconductor crystal orientations formed by localized amorphization and recrystallization of stacked template layers |
US7285473B2 (en) | 2005-01-07 | 2007-10-23 | International Business Machines Corporation | Method for fabricating low-defect-density changed orientation Si |
US8138061B2 (en) | 2005-01-07 | 2012-03-20 | International Business Machines Corporation | Quasi-hydrophobic Si-Si wafer bonding using hydrophilic Si surfaces and dissolution of interfacial bonding oxide |
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US20120156861A1 (en) | 2012-06-21 |
US20090298258A1 (en) | 2009-12-03 |
JP2006191029A (ja) | 2006-07-20 |
TW200632992A (en) | 2006-09-16 |
US20060154442A1 (en) | 2006-07-13 |
US8053330B2 (en) | 2011-11-08 |
US8138061B2 (en) | 2012-03-20 |
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