CN109686656A - A kind of preparation method of the heterogeneous integrated carborundum films structure of silicon substrate - Google Patents

A kind of preparation method of the heterogeneous integrated carborundum films structure of silicon substrate Download PDF

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Publication number
CN109686656A
CN109686656A CN201811347792.4A CN201811347792A CN109686656A CN 109686656 A CN109686656 A CN 109686656A CN 201811347792 A CN201811347792 A CN 201811347792A CN 109686656 A CN109686656 A CN 109686656A
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silicon
single crystal
preparation
carbide single
silicon carbide
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欧欣
伊艾伦
游天桂
黄凯
王曦
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Shanghai Institute of Microsystem and Information Technology of CAS
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Shanghai Institute of Microsystem and Information Technology of CAS
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04Manufacture 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
    • H01L21/0445Manufacture 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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  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
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  • Condensed Matter Physics & Semiconductors (AREA)
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Abstract

The present invention relates to a kind of preparation methods of the heterogeneous integrated carborundum films structure of silicon substrate, comprising steps of providing the silicon carbide single crystal wafer with injection face;It carries out hydrogen ion towards silicon carbide single crystal wafer from injection to inject to form implantation defect layer, the top of the implantation defect layer forms silicon carbide single crystal film;Injection face is bonded with a silicon support substrate, obtain include silicon carbide single crystal wafer and silicon support substrate the first composite construction;First composite construction is made annealing treatment, so that the first composite construction is removed along implantation defect layer, obtains the second composite construction, wherein implantation defect layer forms damaging layer, and the second composite construction includes damaging layer, silicon carbide single crystal film and silicon support substrate;Second composite construction is surface-treated obtained with removing damaging layer include silicon carbide single crystal film and silicon support substrate the heterogeneous integrated carborundum films structure of silicon substrate.The problem of crystalline quality difference is not present in the integrated thin-film structure that preparation method of the invention obtains.

Description

A kind of preparation method of the heterogeneous integrated carborundum films structure of silicon substrate
Technical field
The present invention relates to the preparations of information functional material, relate more specifically to a kind of heterogeneous integrated carborundum films knot of silicon substrate The preparation method of structure.
Background technique
SiC is a kind of semiconductor material with wide forbidden band, and forbidden bandwidth 2.3-3.4eV still has steady in the high temperature environment Fixed electric property.The Knoop hardness of SiC reaches 2480kg/mm2, Young's modulus reaches 700GPa, with outstanding mechanicalness Energy.In addition, SiC material chemical property is stablized, it can work in the environment with strong corrosive, be high temperature, high pressure etc. is harsh Under the conditions of MEMS (MEMS) device ideal material.
In addition, it is contemplated that the optical characteristics of SiC, SiC is integrated optics, non-linear and opto-mechanical device ideal material. Compared with other materials, SiC combines high refractive index (n=2.6), broad stopband, high second order and third-order nonlinear optical coefficient.Height refraction Rate realizes the high limitation of optical mode, will bring greater flexibility in dispersion field.Broad-band gap makes under high-power Optical absorption loss minimizes, and high second order and three ranks make SiC have outstanding performance in nonlinear optics application.
SiC material has more than 200 kinds of crystal forms, wherein applying at most is 3C-SiC, 4H-SiC and 6H-SiC.3C-SiC is thin Film is mainly the method for utilizing aumospheric pressure cvd (APCVD) and rpcvd (RPCVD), in Si substrate table Face deposits SiC film.The 3C-SiC film prepared in this way is mainly polycrystal film, and crystal quality is unable to reach monocrystalline. However, the growth temperature of 6H-SiC is greater than the melting temperature of silicon due to 4H-SiC, traditional thin film deposition hetero-epitaxy can not be passed through Method silicon substrate grow monocrystal SiC film, therefore, which results in difficulty of the SiC film in growth.And certainly due to SiC The hardness of body is greatly and characteristics, the direct processome material such as corrosion-resistant are again very difficult.
Summary of the invention
In order to solve it is above-mentioned it is of the existing technology can not be by the method for traditional thin film deposition hetero-epitaxy in silicon substrate The problem of growing monocrystal SiC film, the present invention is intended to provide a kind of preparation method of the heterogeneous integrated carborundum films structure of silicon substrate.
The present invention provides a kind of preparation method of heterogeneous integrated carborundum films structure of silicon substrate, comprising steps of S1, provides tool There is the silicon carbide single crystal wafer of injection face;S2 carries out hydrogen ion injection from the injection towards silicon carbide single crystal wafer, so that note Enter ion to reach predetermined depth and form implantation defect layer at predetermined depth, the top of the implantation defect layer forms silicon carbide list Brilliant film;The injection face is bonded with a silicon support substrate, obtains including silicon carbide single crystal wafer and silicon support substrate by S3 First composite construction;S4 makes annealing treatment the first composite construction, so that the first composite construction is shelled along implantation defect layer From obtaining the second composite construction, wherein implantation defect layer forms damaging layer, and the second composite construction includes damaging layer, silicon carbide list Brilliant film and silicon support substrate;S5 is surface-treated to remove damaging layer the second composite construction, obtains including silicon carbide list The heterogeneous integrated carborundum films structure of the silicon substrate of brilliant film and silicon support substrate.
Preferably, the size of the silicon carbide single crystal wafer is grade chip or wafer scale chip.
Preferably, the energy of hydrogen ion injection is 20keV-2MeV, and dosage is 1 × 1016cm-2-1×1017cm-2.It is preferred that Ground, predetermined depth be 100nm-2 μm, i.e., the described silicon carbide single crystal film with a thickness of 100nm-2 μm.In a preferred implementation Example in, the silicon carbide single crystal film with a thickness of 500nm.
Preferably, the silicon support substrate is substrate wafer.Preferably, the silicon support substrate with a thickness of 200 μm- 1mm。
In the step S3, it is preferable that one layer of dielectric layer is grown in silicon support substrate, to the injection face and described The injection face is bonded by dielectric layer after carrying out plasma-activated processing with the dielectric layer.Preferably, the gas of plasma-activated Body includes but is not limited to oxygen, nitrogen, argon gas etc..Preferably, bonding temperature is between 20 DEG C and 800 DEG C.Preferably, it is bonded Environmental condition includes but is not limited to normal temperature and pressure, vacuum environment, nitrogen atmosphere etc..Preferably, the dielectric layer is silica, oxygen Change at least one of aluminium or silicon nitride.Preferably, the forming method of the dielectric layer includes but is not limited to thermal oxide or gas Mutually deposit.Preferably, the thickness of the dielectric layer is between 0nm-5 μm.
In the step S4, made annealing treatment in the environment of vacuum, nitrogen, argon gas or hydrogen so that silicon carbide Monocrystal thin films are transferred in silicon support substrate by annealing.Moreover, by the annealing, silicon carbide single crystal film with The bond strength of silicon support substrate is further strengthened.Preferably, annealing temperature is 500 DEG C -1300 DEG C, and annealing time is 1 point Clock -24 hours.
In the step S5, the surface treatment using remove the method for damaging layer as high annealing, chemically mechanical polishing, At least one of reactive ion etching, ion beam etching or the polishing of ion beam glancing incidence.By the surface treatment so that carbon It is horizontal that the surface of SiClx monocrystal thin films reaches device preparation.Ion beam energy range 1ev~10kev of ion beam etching, environment 100~600 degrees Celsius of temperature, 40 °~90 ° of ion beam incident angle, 1~120min of process time, to obtain high quality Silicon carbide single crystal film.
Preparation method according to the present invention is infused in formation implantation defect at the predetermined depth under injection face by hydrogen ion Layer, is then bonded with silicon support substrate, and the structure after bonding is annealed, so that silicon carbide single crystal film is transferred to silicon support On substrate, surface treatment then is carried out to silicon carbide single crystal film and forms the heterogeneous integrated carborundum films structure of silicon substrate.In this way, this The problem of crystalline quality difference is not present in the integrated thin-film structure that the preparation method of invention obtains.
Detailed description of the invention
Fig. 1 is the sectional view for the unimplanted silicon carbide single crystal wafer that preparation method according to the present invention provides;
Fig. 2 is the sectional view of the silicon carbide single crystal wafer after the injection that preparation method according to the present invention provides;
Fig. 3 is that the silicon carbide single crystal wafer after the injection that preparation method according to the present invention provides is bonded with silicon support substrate The sectional view of the first obtained composite construction;
Fig. 4 is the section that the first composite construction that preparation method according to the present invention provides is removed along implantation defect layer Figure;
Fig. 5 is the sectional view for the heterogeneous integrated carborundum films structure of silicon substrate that preparation method according to the present invention provides.
Specific embodiment
With reference to the accompanying drawing, presently preferred embodiments of the present invention is provided, and is described in detail.
The preparation side of the heterogeneous integrated carborundum films structure of silicon substrate according to the present invention includes:
1) silicon carbide single crystal wafer 1 with injection face 1a is provided, as shown in Figure 1;
2) hydrogen ion injection, silicon carbide list are carried out to silicon carbide single crystal wafer 1 from injection face 1a along the arrow direction of Fig. 2 Jingjing piece 1 forms implantation defect layer 11 at the predetermined depth apart from injection face 1a, and the top of the implantation defect layer 11 forms carbon SiClx monocrystal thin films 12;
3) one layer of dielectric layer 21 is grown in silicon support substrate 2, and injection face 1a is bonded with dielectric layer 21, as shown in figure 3, To the first composite construction including silicon carbide single crystal wafer 1 and silicon support substrate 2;
4) the first composite construction is made annealing treatment, as shown in figure 4, making the first composite construction along implantation defect layer 11 removings obtain the second composite construction, wherein implantation defect layer 11 forms damaging layer 111, and the second composite construction includes damaging layer 111, silicon carbide single crystal film 12 and silicon support substrate 2;
5) it carries out surface treatment and removes damaging layer 111 in the second composite construction, obtain as shown in Figure 5 including silicon carbide The heterogeneous integrated carborundum films structure of the silicon substrate of monocrystal thin films 12 and silicon support substrate 2.
Embodiment 1
Millimetre-sized silicon carbide single crystal wafer is provided.Hydrogen ion injection, Implantation Energy 200keV, note are carried out from injection face Entering dosage is 8 × 1016ions/cm2, implantation defect layer is being formed at about 1 μm of injection face.Lining is supported in the silicon of 500 μ m-thicks The SiO of one layer of 2 μ m-thick is grown on bottom2Dielectric layer, by injection face and SiO2Dielectric layer bonding, bonding temperature are 100 DEG C.Under vacuum Annealing, annealing temperature are 1000 DEG C, annealing time 30min.Chemically mechanical polishing removes damaging layer, and it is heterogeneous to obtain silicon substrate Integrated carborundum films structure.
Embodiment 2
The silicon carbide single crystal wafer of wafer scale is provided.Hydrogen ion injection, Implantation Energy 20keV, note are carried out from injection face Entering dosage is 4 × 1016ions/cm2, implantation defect layer is being formed at injection face about 200nm.By injection face and 300 μ m-thicks Silicon support substrate Direct Bonding, bonding temperature be 20 DEG C.It is made annealing treatment under nitrogen atmosphere, annealing temperature is 900 DEG C, when annealing Between be 2h.Ion beam etching removes damaging layer, energy 2kev, and environment temperature is 300 degrees Celsius, and ion beam incident angle is 60 °, process time 5min, obtain the heterogeneous integrated carborundum films structure of silicon substrate.
Embodiment 3
The silicon carbide single crystal wafer of wafer scale is provided.Hydrogen ion injection, Implantation Energy 1MeV, injection are carried out from injection face Dosage is 1 × 1017ions/cm2, implantation defect layer is being formed at about 2 μm of injection face.In the silicon support substrate of 1mm thickness The alumina medium layer for growing one layer of 2 μ m-thick, injection face is bonded with alumina medium layer, and bonding temperature is 600 DEG C.Argon gas gas It is made annealing treatment under atmosphere, annealing temperature is 1300 DEG C, annealing time 8h.The polishing of ion beam glancing incidence removes damaging layer, obtains silicon The heterogeneous integrated carborundum films structure of base.
Above-described, only presently preferred embodiments of the present invention, the range being not intended to limit the invention, of the invention is upper Stating embodiment can also make a variety of changes.Made by i.e. all claims applied according to the present invention and description Simply, equivalent changes and modifications fall within the claims of the invention patent.The not detailed description of the present invention is Routine techniques content.

Claims (9)

1. a kind of preparation method of the heterogeneous integrated carborundum films structure of silicon substrate, which is characterized in that the preparation method comprising steps of
S1 provides the silicon carbide single crystal wafer with injection face;
S2 carries out hydrogen ion injection from the injection towards silicon carbide single crystal wafer, so that injection ion reaches predetermined depth simultaneously Implantation defect layer is formed at predetermined depth, the top of the implantation defect layer forms silicon carbide single crystal film;
The injection face is bonded by S3 with a silicon support substrate, obtains including the of silicon carbide single crystal wafer and silicon support substrate One composite construction;
S4 makes annealing treatment the first composite construction, so that the first composite construction is removed along implantation defect layer, obtains second Composite construction, wherein implantation defect layer forms damaging layer, and the second composite construction includes damaging layer, silicon carbide single crystal film and silicon Support substrate;
S5 is surface-treated to remove damaging layer the second composite construction, obtains including silicon carbide single crystal film and silicon support The heterogeneous integrated carborundum films structure of the silicon substrate of substrate.
2. preparation method according to claim 1, which is characterized in that the energy of hydrogen ion injection is 20keV-2MeV, agent Amount is 1 × 1016cm-2-1×1017cm-2
3. preparation method according to claim 1, which is characterized in that predetermined depth is 100nm-2 μm.
4. preparation method according to claim 1, which is characterized in that the silicon support substrate with a thickness of 200 μm of -1mm.
5. preparation method according to claim 1, which is characterized in that in the step S3, raw in silicon support substrate Long one layer of dielectric layer, to the injection face and the dielectric layer carry out after plasma-activated processing by the injection face with given an account of The bonding of matter layer.
6. preparation method according to claim 5, which is characterized in that the dielectric layer is silica, aluminium oxide or nitridation At least one of silicon.
7. preparation method according to claim 1, which is characterized in that bonding temperature is between 20 DEG C and 800 DEG C.
8. preparation method according to claim 1, which is characterized in that in the step S4, in vacuum, nitrogen, argon gas Or it is made annealing treatment in the environment of hydrogen so that silicon carbide single crystal film is transferred to silicon support substrate by annealing On.
9. preparation method according to claim 1, which is characterized in that in the step S5, the surface treatment is to go Except the method for damaging layer is high annealing, chemically mechanical polishing, reactive ion etching, ion beam etching or ion beam glancing incidence At least one of polishing.
CN201811347792.4A 2018-11-13 2018-11-13 A kind of preparation method of the heterogeneous integrated carborundum films structure of silicon substrate Pending CN109686656A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111865250A (en) * 2020-07-10 2020-10-30 中国科学院上海微系统与信息技术研究所 POI substrate, high-frequency acoustic wave resonator and preparation method thereof
CN112713082A (en) * 2019-10-25 2021-04-27 中国电子科技集团公司第四十八研究所 Substrate for preparing gallium nitride radio frequency device, preparation method of substrate and gallium nitride radio frequency device
CN113178383A (en) * 2021-03-10 2021-07-27 华为技术有限公司 Silicon carbide substrate, silicon carbide device and substrate thinning method thereof
CN113658849A (en) * 2021-07-06 2021-11-16 华为技术有限公司 Composite substrate, manufacturing method thereof, semiconductor device and electronic equipment
CN113690298A (en) * 2021-10-26 2021-11-23 北京青禾晶元半导体科技有限责任公司 Semiconductor composite substrate, semiconductor device and preparation method
CN116705605A (en) * 2023-06-20 2023-09-05 中国科学院上海微系统与信息技术研究所 Silicon-based gallium nitride HEMT device and preparation method thereof
CN116741639A (en) * 2023-06-20 2023-09-12 中国科学院上海微系统与信息技术研究所 Method for manufacturing semiconductor device and semiconductor device
CN116774469A (en) * 2023-06-20 2023-09-19 中国科学院上海微系统与信息技术研究所 Device manufacturing method and structure
CN117438391A (en) * 2023-12-18 2024-01-23 北京青禾晶元半导体科技有限责任公司 High-thermal-conductivity 3C-SiC polycrystalline substrate and preparation method thereof
WO2024040880A1 (en) * 2022-08-25 2024-02-29 青禾晶元(天津)半导体材料有限公司 Composite silicon carbide substrate and preparation method therefor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105957831A (en) * 2016-07-06 2016-09-21 中国科学院上海微系统与信息技术研究所 Method for manufacturing monocrystal material thin layer structure on supporting substrate
CN107004573A (en) * 2014-12-05 2017-08-01 信越化学工业株式会社 The manufacture method and composite base plate of composite base plate
CN108493334A (en) * 2018-03-15 2018-09-04 中国科学院上海微系统与信息技术研究所 A kind of preparation method of thin film heteroj structure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107004573A (en) * 2014-12-05 2017-08-01 信越化学工业株式会社 The manufacture method and composite base plate of composite base plate
CN105957831A (en) * 2016-07-06 2016-09-21 中国科学院上海微系统与信息技术研究所 Method for manufacturing monocrystal material thin layer structure on supporting substrate
CN108493334A (en) * 2018-03-15 2018-09-04 中国科学院上海微系统与信息技术研究所 A kind of preparation method of thin film heteroj structure

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112713082A (en) * 2019-10-25 2021-04-27 中国电子科技集团公司第四十八研究所 Substrate for preparing gallium nitride radio frequency device, preparation method of substrate and gallium nitride radio frequency device
CN111865250A (en) * 2020-07-10 2020-10-30 中国科学院上海微系统与信息技术研究所 POI substrate, high-frequency acoustic wave resonator and preparation method thereof
CN111865250B (en) * 2020-07-10 2021-10-19 中国科学院上海微系统与信息技术研究所 POI substrate, high-frequency acoustic wave resonator and preparation method thereof
CN113178383A (en) * 2021-03-10 2021-07-27 华为技术有限公司 Silicon carbide substrate, silicon carbide device and substrate thinning method thereof
CN113658849A (en) * 2021-07-06 2021-11-16 华为技术有限公司 Composite substrate, manufacturing method thereof, semiconductor device and electronic equipment
CN113690298A (en) * 2021-10-26 2021-11-23 北京青禾晶元半导体科技有限责任公司 Semiconductor composite substrate, semiconductor device and preparation method
WO2024040880A1 (en) * 2022-08-25 2024-02-29 青禾晶元(天津)半导体材料有限公司 Composite silicon carbide substrate and preparation method therefor
CN116705605A (en) * 2023-06-20 2023-09-05 中国科学院上海微系统与信息技术研究所 Silicon-based gallium nitride HEMT device and preparation method thereof
CN116741639A (en) * 2023-06-20 2023-09-12 中国科学院上海微系统与信息技术研究所 Method for manufacturing semiconductor device and semiconductor device
CN116774469A (en) * 2023-06-20 2023-09-19 中国科学院上海微系统与信息技术研究所 Device manufacturing method and structure
CN117438391A (en) * 2023-12-18 2024-01-23 北京青禾晶元半导体科技有限责任公司 High-thermal-conductivity 3C-SiC polycrystalline substrate and preparation method thereof
CN117438391B (en) * 2023-12-18 2024-03-15 北京青禾晶元半导体科技有限责任公司 High-thermal-conductivity 3C-SiC polycrystalline substrate and preparation method thereof

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Application publication date: 20190426