WO2005013343A1 - 気相成長装置及び気相成長方法 - Google Patents
気相成長装置及び気相成長方法 Download PDFInfo
- Publication number
- WO2005013343A1 WO2005013343A1 PCT/JP2004/006007 JP2004006007W WO2005013343A1 WO 2005013343 A1 WO2005013343 A1 WO 2005013343A1 JP 2004006007 W JP2004006007 W JP 2004006007W WO 2005013343 A1 WO2005013343 A1 WO 2005013343A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- single crystal
- crystal substrate
- silicon single
- susceptor
- counterbore
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P72/00—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof
- H10P72/70—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping
- H10P72/76—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping using mechanical means, e.g. clamps or pinches
- H10P72/7604—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping using mechanical means, e.g. clamps or pinches the wafers being placed on a susceptor, stage or support
- H10P72/7611—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping using mechanical means, e.g. clamps or pinches the wafers being placed on a susceptor, stage or support characterised by edge profile or support profile
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/20—Formation of materials, e.g. in the shape of layers or pillars of semiconductor materials
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B25/00—Single-crystal growth by chemical reaction of reactive gases, e.g. chemical vapour-deposition growth
- C30B25/02—Epitaxial-layer growth
- C30B25/12—Substrate holders or susceptors
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/02—Elements
- C30B29/06—Silicon
Definitions
- the present invention relates to a vapor phase growth apparatus for vapor phase growth of a silicon epitaxy layer on a main surface of a silicon single crystal substrate, and a vapor phase growth method using the same.
- a so-called single-wafer-type vapor-phase growth apparatus is known as an apparatus for vapor-phase growing a silicon epitaxial layer on a main surface of a silicon single crystal substrate.
- the single-wafer type vapor phase growth apparatus has a substantially disk-shaped susceptor that supports a silicon single crystal substrate, and supplies silicon raw material onto the main surface while heating the silicon single crystal substrate on the susceptor from both sides.
- the silicon epitaxial layer can be vapor-phase grown.
- the susceptor has a counterbore for positioning the silicon single crystal substrate at the center of the main surface, and supports the silicon single crystal substrate in the counterbore.
- a counterbore where the bottom is deeper at the center than at the outer periphery is required to uniformly heat the silicon single crystal substrate.
- the present invention provides a vapor phase growth apparatus capable of reliably reducing the frequency of occurrence of slip dislocations. It is an object of the present invention to provide a deposition and vapor deposition method. Disclosure of the invention
- a vapor phase growth apparatus of the present invention In order to solve the above problems, a vapor phase growth apparatus of the present invention
- a silicon single crystal substrate placed on a counterbore formed on a susceptor is heated from both sides and a silicon epitaxy layer is vapor-phase grown on a main surface of the silicon single crystal substrate.
- the counterbore has an outer peripheral side portion that supports the back surface of the silicon single crystal substrate, and an inner peripheral side portion that is held inside the outer peripheral side portion so as to be recessed from the outer peripheral side portion,
- the susceptor has a vertical U-shaped warped vertical cross-sectional shape.
- the frequency of occurrence of slip dislocations varies depending on the individual susceptors because some susceptors are warped in a U-shape in longitudinal section in the susceptor manufacturing process. As a result, the distance between the back surface of the silicon single crystal substrate and the bottom surface of the counterbore increases.
- the susceptor is usually formed by heating a graphite body to be highly purified by heat treatment, and then coating the surface with SiC (silicon carbide).
- 3 has a shape that is curved in a U-shape when viewed in a longitudinal section, or a shape that is curved in an inverted U-shape when viewed in a longitudinal section as shown in FIG. 2A. Even if the susceptors disclosed in the above two documents are used to grow a silicon epitaxy layer in a vapor phase using a susceptor 50 (see FIG. 3) warped in a U-shape in longitudinal section.
- the distance between the bottom surface of the counterbore 52 and the back surface of the silicon single crystal substrate W is smaller than the distance D between the bottom surface of the counterbore and the back surface of the silicon single crystal substrate W when the susceptor is flat.
- D + ⁇ which is larger by the height difference a between the position corresponding to the central portion of the spot facing and the position corresponding to the supporting portion of the silicon single crystal substrate W is obtained. Therefore, in this case, since the temperature difference between the central portion and the outer peripheral portion on the main surface side of the silicon single crystal substrate W becomes large, the thermal stress applied to the outer peripheral portion of the main surface of the silicon single crystal substrate W becomes large. As a result, a slip dislocation occurs in the silicon epitaxy layer formed on the outer peripheral portion.
- the slip dislocation is caused by the counterbore that supports the back surface of the silicon single crystal substrate W. This occurs because the distance between the bottom surface of the inner peripheral portion depressed from the outer peripheral portion and the silicon single crystal substrate W is increased, so that even if the distance is small, the frequency of occurrence of slip dislocations does not increase.
- a susceptor 2 having a vertical cross-sectional shape warped in an inverted U shape as shown in FIG. 2A is selectively used, and the distance between the bottom surface 21 a of the counterbore and the silicon single crystal substrate W is determined by the The vapor phase growth is performed with the warpage smaller than the value D in the case of flatness. Then, in this case, in comparison with the case where the susceptor 50 warped in a U-shape in a vertical cross section is used, the central portion and the outer peripheral portion on the main surface side of the silicon single crystal substrate W during the vapor phase growth. Since the temperature difference between the silicon single crystal substrates W becomes smaller and thermal stress is less likely to be applied to the outer peripheral portion of the silicon single crystal substrate W, the frequency of occurrence of slip dislocations can be reliably reduced.
- the maximum distance between the bottom surface of the inner peripheral portion of the counterbore and the back surface of the silicon single crystal substrate is less than 0.4 mm. Is preferred. In this case, the occurrence frequency of slip dislocation can be reliably reduced.
- the maximum distance between the bottom surface of the inner peripheral portion of the spot facing and the back surface of the silicon single crystal substrate is 0.4 mm or more, the frequency of occurrence of slip dislocations increases remarkably.
- the back surface of the silicon single crystal substrate comes into contact with the bottom surface of the counterbore, and the back surface of the silicon single crystal substrate is scratched, and the back surface is mirror-finished. It is not particularly preferable when the surface is treated, since the wound becomes conspicuous.
- the susceptor is single wafer, is represented by the curvature of the magnitude of the inverted U-shaped bow, the rear surface side curvature of the allowed descriptor is 1 7 5 X 1 0 - is preferably 5 mm-i below.
- the susceptor counterbore is extremely shallow.
- the susceptor being a single wafer type means that the susceptor is for a single wafer type vapor phase growth apparatus.
- the lifting unit is the reciprocal l Z r of height difference)) 2 + (value r calculated from single crystal silicon substrate radius) 2 with the corresponding position.
- the vapor phase growth method of the present invention is characterized in that a silicon epitaxy layer is vapor-phase grown on a main surface of a silicon single crystal substrate using the vapor phase growth apparatus of the present invention.
- FIG. 1 is a longitudinal sectional view showing a schematic configuration of an embodiment of a vapor phase growth apparatus according to the present invention.
- FIG. 2A is a longitudinal sectional view of the susceptor according to the present invention
- FIG. 2B is a plan view showing the back surface of the susceptor according to the present invention.
- FIG. 3 is a longitudinal sectional view of a conventional susceptor. BEST MODE FOR CARRYING OUT THE INVENTION
- the vapor phase growth apparatus in the present embodiment is a single-wafer-type vapor phase growth apparatus for vapor-phase growing an epitaxy layer on the main surface of a silicon single crystal substrate having a diameter of 300 mm.
- FIG. 1 is a longitudinal sectional view showing a schematic configuration of the vapor phase growth apparatus 100.
- the vapor phase growth apparatus 100 includes a reaction furnace 1 in which a silicon single crystal substrate W is disposed.
- the reactor 1 is a reaction chamber having a top wall 1a, a bottom wall 1b, and side walls 1e.
- the top wall 1a and the bottom wall 1b are formed of translucent quartz.
- a gas supply port 1c for supplying a reaction gas for gas phase growth into the reaction furnace 1 and a gas discharge port 1d for discharging the reaction gas from the reaction furnace 1 are formed.
- a gas supply device (not shown) for supplying a reaction gas at a predetermined composition and flow rate is connected to the gas supply port 1c. ing.
- a reaction gas for example, when a silicon epitaxial layer is grown on a silicon single crystal substrate by vapor phase growth, a mixed gas of SiHCl 3 (trichlorosilane) gas as a source gas and H 2 gas as a carrier gas is used. It is preferable to use Above the reactor 1, a heating device 5a for radiating radiation toward the inside of the reactor 1 through the top wall 1a is provided.Below the reactor 1, the heating device 5a is provided through the bottom wall 1b. A heating device 5b that radiates toward the inside is provided. In this embodiment, halogen lamps are used as the calo-heaters 5a and 5b.
- a substantially disk-shaped susceptor 2 for mounting a silicon single crystal substrate W is arranged inside the reaction furnace 1 while being supported by a support member 3.
- the susceptor 2 is formed by coating graphite with silicon carbide (SiC).
- FIG. 2A shows a longitudinal sectional view of the susceptor 2.
- the susceptor 2 has an inverted U-shaped vertical cross section.
- the curvature of the rear surface 2 b side of the susceptor 2 has a 1. 7 5 X 1 0 ' 5 mm-i below.
- a substantially circular counterbore 2c is formed on the main surface 2a of the susceptor 2, that is, on the upper surface.
- the counterbore 2c is composed of an outer peripheral portion 20 supporting the silicon single crystal substrate W, and an inner peripheral portion 21 formed inside the outer peripheral portion 20 so as to be recessed from the outer peripheral portion 20. And a two-stage configuration having: The bottom surface 21a of the counterbore 2c and the bottom surface 21a of the inner peripheral portion 21 of the counterbore 2c are formed in a U-shape in vertical cross section. More specifically, the bottom surface 21 a of the spot facing 2 c is formed such that the maximum distance from the back surface of the silicon single crystal substrate W is less than 0.4 mm. In the present embodiment, the maximum distance between the bottom surface 21a of the spot facing 2c and the back surface of the silicon single crystal substrate W is synonymous with the depth inside the spot facing.
- This counterbore depth can be obtained from a measurement chart by placing the susceptor 2 on the surface plate with the main surface side up and measuring in the diameter direction using a laser displacement meter.
- the silicon single crystal substrate W placed in the counterbore 2c is heated from above by a heating device 5a as shown in FIG. 5b heats from below through the susceptor 2.
- FIG. 2B is a plan view of the back surface 2 b of the susceptor 2. As shown in this figure, Outside the counterbore 2 c, three recesses 2 e are provided on the back surface of the susceptor 2.
- the support member 3 includes a rotating shaft 3 a extending vertically below the susceptor 2. At the upper end of the rotating shaft 3a, there are provided three spokes 3b radially branched obliquely upward. The tip of each spoke 3 b is fitted into the recess 2 e of the susceptor 2 to support the susceptor 2.
- a rotary drive (not shown) is connected to the rotary shaft 3a, and the rotary shaft 3a and the susceptor 2 are rotated by driving the rotary drive.
- the silicon single crystal substrate is transported and placed in the counterbore 2c of the susceptor 2.
- the susceptor 2 is warped in an inverted U-shape in longitudinal section, the distance between the bottom surface 21 a of the spot facing 2 c and the back surface of the silicon single crystal substrate W is determined by the fact that the susceptor 2 Smaller than when warped.
- the silicon single crystal substrate is heated by the heating devices 5a and 5b, and the susceptor 2 is rotated by the rotary drive device.
- the SiHCl 3 gas and the 3 ⁇ 4 gas are introduced into the reaction furnace 1 from the gas supply port 1c.
- Gas mixture is introduced as a reaction gas to perform gas phase growth.
- the distance between the bottom surface 21 a of the counterbore 2 c and the back surface of the silicon single-crystal substrate W is smaller than in the case of using a susceptor having a U-shape in a vertical cross-section.
- the vapor phase growth is performed in a state where the temperature difference between the central part and the outer peripheral part on the main surface side of the single crystal substrate W is small.
- the temperature difference between the central portion and the outer peripheral portion on the main surface side of the silicon single crystal substrate W is smaller than when a U-shaped susceptor is used in a longitudinal sectional view.
- Vapor-phase growth can be performed in the lowered state. That is, since the vapor phase growth can be performed while suppressing the thermal stress applied to the outer peripheral portion of the silicon single crystal substrate W, the occurrence frequency of the slip dislocation can be surely reduced.
- susceptor shape means the vertical cross-sectional shape of the susceptor.
- the vapor phase growth apparatus 100 is described as a single-wafer type. However, as long as the silicon single crystal substrate w is supported substantially horizontally in the spot, A patch type in which a silicon epitaxial layer is vapor-phase grown on a plurality of silicon single crystal substrates may be used.
- the vapor phase growth apparatus and the vapor phase growth method according to the present invention are useful for reliably reducing the frequency of occurrence of slip dislocations. Is suitable for vapor-phase growth.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Vapour Deposition (AREA)
- Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP04729522A EP1650788B1 (en) | 2003-08-01 | 2004-04-26 | Method for manufacturing a silicon epitaxial wafer |
| DE602004028126T DE602004028126D1 (de) | 2003-08-01 | 2004-04-26 | Verfahren zur herstellung eines epitaktischen siliciumwafers |
| US10/565,653 US7591908B2 (en) | 2003-08-01 | 2004-04-26 | Vapor deposition apparatus and vapor deposition method |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003284912A JP4599816B2 (ja) | 2003-08-01 | 2003-08-01 | シリコンエピタキシャルウェーハの製造方法 |
| JP2003-284912 | 2003-08-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005013343A1 true WO2005013343A1 (ja) | 2005-02-10 |
Family
ID=34113856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2004/006007 Ceased WO2005013343A1 (ja) | 2003-08-01 | 2004-04-26 | 気相成長装置及び気相成長方法 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7591908B2 (ja) |
| EP (1) | EP1650788B1 (ja) |
| JP (1) | JP4599816B2 (ja) |
| KR (1) | KR101079175B1 (ja) |
| DE (1) | DE602004028126D1 (ja) |
| WO (1) | WO2005013343A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828238A (zh) * | 2012-08-24 | 2012-12-19 | 东莞市中镓半导体科技有限公司 | 用于改良外延过程中衬底晶片表面温场的方法 |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010016312A (ja) * | 2008-07-07 | 2010-01-21 | Sumco Corp | エピタキシャルウェーハの製造方法 |
| US20100055318A1 (en) * | 2008-08-29 | 2010-03-04 | Veeco Instruments Inc. | Wafer carrier with varying thermal resistance |
| US20100107974A1 (en) * | 2008-11-06 | 2010-05-06 | Asm America, Inc. | Substrate holder with varying density |
| JP5521561B2 (ja) * | 2010-01-12 | 2014-06-18 | 信越半導体株式会社 | 貼り合わせウェーハの製造方法 |
| US9650726B2 (en) * | 2010-02-26 | 2017-05-16 | Applied Materials, Inc. | Methods and apparatus for deposition processes |
| CN101979721A (zh) * | 2010-09-19 | 2011-02-23 | 山东伟基炭科技有限公司 | 硅芯棒及用于多晶硅生长的硅芯结构 |
| TWI541928B (zh) * | 2011-10-14 | 2016-07-11 | 晶元光電股份有限公司 | 晶圓載具 |
| US10316412B2 (en) | 2012-04-18 | 2019-06-11 | Veeco Instruments Inc. | Wafter carrier for chemical vapor deposition systems |
| US9799548B2 (en) * | 2013-03-15 | 2017-10-24 | Applied Materials, Inc. | Susceptors for enhanced process uniformity and reduced substrate slippage |
| US10167571B2 (en) | 2013-03-15 | 2019-01-01 | Veeco Instruments Inc. | Wafer carrier having provisions for improving heating uniformity in chemical vapor deposition systems |
| ITCO20130041A1 (it) * | 2013-09-27 | 2015-03-28 | Lpe Spa | Suscettore con elemento di supporto |
| DE102014100024A1 (de) | 2014-01-02 | 2015-07-02 | Aixtron Se | Vorrichtung zur Anordnung von Substraten, insbesondere Suszeptor eines CVD-Reaktors |
| WO2015119744A1 (en) * | 2014-02-07 | 2015-08-13 | Applied Materials, Inc. | Chucking capability for bowed wafers on dsa |
| JP7233361B2 (ja) * | 2017-05-12 | 2023-03-06 | 東洋炭素株式会社 | サセプタ、エピタキシャル基板の製造方法、及びエピタキシャル基板 |
| JP7296914B2 (ja) * | 2020-04-17 | 2023-06-23 | 三菱電機株式会社 | サテライトおよび炭化珪素半導体装置の製造方法 |
| US20240213078A1 (en) * | 2022-12-22 | 2024-06-27 | Applied Materials, Inc. | Substrate supports and transfer apparatus for substrate deformation |
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| JPH01256118A (ja) * | 1988-04-05 | 1989-10-12 | Sumitomo Metal Ind Ltd | 気相反応装置 |
| JPH06302550A (ja) * | 1993-04-13 | 1994-10-28 | Hitachi Ltd | 半導体製造装置 |
| JP2000269150A (ja) * | 1999-03-19 | 2000-09-29 | Toshiba Ceramics Co Ltd | 半導体ウエハ加熱処理用治具及びこれを用いた半導体ウエハ加熱処理用装置 |
| JP2002134484A (ja) * | 2000-10-19 | 2002-05-10 | Asm Japan Kk | 半導体基板保持装置 |
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| JP2003203866A (ja) * | 2001-10-24 | 2003-07-18 | Shin Etsu Handotai Co Ltd | 気相成長装置およびエピタキシャルウェーハの製造方法 |
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-
2004
- 2004-04-26 DE DE602004028126T patent/DE602004028126D1/de not_active Expired - Lifetime
- 2004-04-26 US US10/565,653 patent/US7591908B2/en not_active Expired - Lifetime
- 2004-04-26 EP EP04729522A patent/EP1650788B1/en not_active Expired - Lifetime
- 2004-04-26 WO PCT/JP2004/006007 patent/WO2005013343A1/ja not_active Ceased
- 2004-04-26 KR KR1020067002089A patent/KR101079175B1/ko not_active Expired - Fee Related
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| JPH01256118A (ja) * | 1988-04-05 | 1989-10-12 | Sumitomo Metal Ind Ltd | 気相反応装置 |
| JPH06302550A (ja) * | 1993-04-13 | 1994-10-28 | Hitachi Ltd | 半導体製造装置 |
| JP2000269150A (ja) * | 1999-03-19 | 2000-09-29 | Toshiba Ceramics Co Ltd | 半導体ウエハ加熱処理用治具及びこれを用いた半導体ウエハ加熱処理用装置 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828238A (zh) * | 2012-08-24 | 2012-12-19 | 东莞市中镓半导体科技有限公司 | 用于改良外延过程中衬底晶片表面温场的方法 |
| CN102828238B (zh) * | 2012-08-24 | 2015-11-04 | 东莞市中镓半导体科技有限公司 | 用于改良外延过程中衬底晶片表面温场的方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20060052948A (ko) | 2006-05-19 |
| KR101079175B1 (ko) | 2011-11-02 |
| JP2005056984A (ja) | 2005-03-03 |
| EP1650788A4 (en) | 2006-10-11 |
| EP1650788A1 (en) | 2006-04-26 |
| DE602004028126D1 (de) | 2010-08-26 |
| EP1650788B1 (en) | 2010-07-14 |
| US7591908B2 (en) | 2009-09-22 |
| US20060180076A1 (en) | 2006-08-17 |
| JP4599816B2 (ja) | 2010-12-15 |
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