CN111663179A - 用于单晶金刚石生长的晶种托 - Google Patents

用于单晶金刚石生长的晶种托 Download PDF

Info

Publication number
CN111663179A
CN111663179A CN201910164039.XA CN201910164039A CN111663179A CN 111663179 A CN111663179 A CN 111663179A CN 201910164039 A CN201910164039 A CN 201910164039A CN 111663179 A CN111663179 A CN 111663179A
Authority
CN
China
Prior art keywords
seed
growth
single crystal
seed crystal
crystal diamond
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.)
Pending
Application number
CN201910164039.XA
Other languages
English (en)
Inventor
闫石
李俊杰
顾长志
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Institute of Physics of CAS
Original Assignee
Institute of Physics of CAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Institute of Physics of CAS filed Critical Institute of Physics of CAS
Priority to CN201910164039.XA priority Critical patent/CN111663179A/zh
Publication of CN111663179A publication Critical patent/CN111663179A/zh
Pending legal-status Critical Current

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C30CRYSTAL GROWTH
    • C30BSINGLE-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
    • C30B25/00Single-crystal growth by chemical reaction of reactive gases, e.g. chemical vapour-deposition growth
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C16/00Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
    • C23C16/22Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
    • C23C16/26Deposition of carbon only
    • C23C16/27Diamond only
    • C23C16/276Diamond only using plasma jets
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C16/00Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
    • C23C16/44Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
    • C23C16/458Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for supporting substrates in the reaction chamber
    • C23C16/4581Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for supporting substrates in the reaction chamber characterised by material of construction or surface finish of the means for supporting the substrate
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C16/00Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
    • C23C16/44Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
    • C23C16/50Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges
    • C23C16/517Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges using a combination of discharges covered by two or more of groups C23C16/503 - C23C16/515
    • CCHEMISTRY; METALLURGY
    • C30CRYSTAL GROWTH
    • C30BSINGLE-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
    • C30B29/00Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
    • C30B29/02Elements
    • C30B29/04Diamond

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Inorganic Chemistry (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

本发明提供一种用于单晶金刚石生长的晶种托,其中,所述晶种托上表面(7)为凹球面,所述凹球面中心具有贯穿孔(5),所述贯穿孔底部放置晶种垫(6)。本发明提供的晶种托可控制等离子体范围以获得更均匀的能量密度,从而使得单晶金刚石晶种具有更好的生长效果,生长速率达到20μm/h~30μm/h,并能够保证生长模式为层状模式。本发明提供的晶种托适用于不同厚度的单晶金刚石晶种,且方便拆卸清洗和重复利用。

Description

用于单晶金刚石生长的晶种托
技术领域
本发明涉及一种用于单晶金刚石生长的晶种托。具体地,本发明涉及一种用于微波等离子体化学气相沉积法单晶金刚石生长的晶种托。
背景技术
采用微波等离子体化学气相沉积生长单晶金刚石时的生长条件苛刻,特别是等离子体对生长效果的影响显著。目前所用晶种托上表面为平面,导致晶种上方等离子体不均匀,生长质量较差。晶种放置位置为凹坑。导致生长后凹坑内多晶无法去除,晶种底部无定形碳难以清理,重复利用性差。凹坑深度不可调,对晶种厚度要求高,使用范围受限严重。
发明内容
本发明的目的是解决上述提出的问题,使单晶金刚石生长过程中晶种上方等离子体密度均匀,提高单晶金刚石生长速率和生长质量。
本发明的目的是通过以下技术方案实现的。
本发明提供一种用于单晶金刚石生长的晶种托,其中,所述晶种托上表面为凹球面,所述凹球面中心具有贯穿孔,所述贯穿孔底部设有晶种垫。
优选地,在本发明所述的用于单晶金刚石生长的晶种托中,所述晶种托下部为圆柱,上部为圆台。
本发明人出乎意料地发现,通过将用于单晶金刚石生长的晶种托上部设计成圆台,圆台上表面设计为凹球面,能够在单晶金刚石生长的过程中集中等离子体,从而解决了单晶金刚石生长过程中生长速率较慢,生长质量较差的技术难题。
在本发明的用于单晶金刚石生长的晶种托中,将贯穿孔作为晶种槽,并以滑配的方式设置晶种垫,方便生长后晶种托的清理,解决了晶种托不易重复利用的难题。另外,本发明适用于更多晶种厚度。
优选地,在本发明所述的用于单晶金刚石生长的晶种托中,所述晶种托的高度为4mm~10mm。
优选地,在本发明所述的用于单晶金刚石生长的晶种托中,所述圆柱的直径为30mm~45mm,所述圆柱的高度为3mm~9mm。
优选地,在本发明所述的用于单晶金刚石生长的晶种托中,所述圆台的高度为1mm~2mm,圆台上表面直径为20mm~35mm。
优选地,在本发明所述的用于单晶金刚石生长的晶种托中,所述凹球面曲率半径不小于113mm。
优选地,在本发明所述的用于单晶金刚石生长的晶种托中,所述贯穿孔为正方形孔,所述晶种垫为正方形垫,用于控制单晶金刚石晶种表面到所述贯穿孔上边缘的距离。
优选地,在本发明所述的用于单晶金刚石生长的晶种托中,所述晶种垫(6)以滑配的方式置于所述贯穿孔(5)内。
优选地,在本发明所述的用于单晶金刚石生长的晶种托中,所述正方形孔边长为5mm~10mm。
优选地,在本发明所述的用于单晶金刚石生长的晶种托中,所述正方形垫边长为4.9mm~9.9mm,厚度为2mm~9mm。
本发明具有如下优点:
本发明提供的晶种托可以控制等离子体的范围以获得更均匀的能量密度,从而使得单晶金刚石晶种具有更好的生长效果,生长速率可以达到20μm/h~30μm/h,并能够保证生长模式为层状模式。本发明提供的晶种托适用于不同厚度的单晶金刚石晶种,且方便拆卸清洗和重复利用。
附图说明
以下,结合附图来详细说明本发明的实施方案,其中:
图1是现有晶种托的剖视图;
图2是本发明的晶种托剖视图;
图3是本发明的晶种托俯视图;
图4是本发明的晶种托工作图。
附图标记说明:
1 设备基台
2 样品生长腔体
3 等离子体球
4 单晶金刚石晶种
5 贯穿孔
6 晶种垫
7 晶种托上表面
8 晶种托
具体实施方式
现参考附图,详细说明本发明所公开的用于单晶金刚石生长的晶种托的示意性方案。尽管提供附图是为了呈现本发明的一些实施方式,但附图不必按具体实施方案的尺寸绘制。附图中的部分构件可在不影响技术效果的前提下根据实际需求进行位置调整。在说明书中出现的短语“在附图中”或类似用语不必参考所有附图或示例。
在下文中被用于描述附图的某些方向性术语,例如“上”、“上部”和其它方向性术语,将被理解为具有其正常含义并且指正常看附图时所涉及的那些方向。除另有指明,本说明书所述方向性术语基本按照本领域技术人员所理解的常规方向。
图2示出了本发明提供的晶种托的剖视图。图3示出了本发明提供的晶种托的俯视图。图4示出了本发明提供的晶种托的工作图。参考图4,在所示出的实施例中,用于单晶金刚石生长的晶种托置于微波等离子体化学气相沉积设备样品生长腔体2内的设备基台1上。所述晶种托采用金属钼加工成型。等离子体球3位于本发明所述的晶种托的正上方,等离子体球3下部与所述晶种托上表面7曲率一致。等离子体密度均匀,晶种生长时边缘效应降低,生长质量提高。
在本发明提供的一个实施方案中,图4所示的晶种托下部是直径为30mm、高度为3mm的圆柱。当然,在其它实施方案中,所述晶种托下部可以是直径为30mm~45mm中的任意一个数、高度为3mm~9mm中的任意一个数的圆柱。所述晶种托上部是高度为1mm的圆台,所述圆台的上表面直径为20mm。当然,在其它实施方案中,所述晶种托上部可以是高度为1mm~2mm中的任意一个数的圆台,所述圆台的上表面直径可以为20mm~35mm中的任意一个数。所述晶种托上表面7为曲率半径为113mm的凹球面。当然,在其它实施方案中,曲率半径也可以大于113mm。所述凹球面中心具有正方形贯穿孔5。所述贯穿孔5边长为5mm,深度为3mm。所述贯穿孔底部放置正方形晶种垫6,晶种垫6边长为4.9mm,厚度为2.5mm。单晶金刚石晶种4放置于晶种垫6上,单晶金刚石晶种4的边长为3mm,高度为1mm。当然,在其它实施方案中,正方形贯穿孔5和晶种垫6的边长及厚度等参数可以选择其它要求保护的范围内的合理数值。
以上所述仅为本发明示意性的具体实施方式,并非用以限定本发明的范围。任何本领域的技术人员,在不脱离本发明的构思和原则的前提下所作的等同变化、修改与结合,均应属于本发明保护的范围。

Claims (10)

1.一种用于单晶金刚石生长的晶种托,其特征在于,所述晶种托上表面(7)为凹球面,所述凹球面中心具有贯穿孔(5),所述贯穿孔底部设有晶种垫(6)。
2.根据权利要求1所述的用于单晶金刚石生长的晶种托,其特征在于,所述晶种托的高度为4mm~10mm。
3.根据权利要求1所述的用于单晶金刚石生长的晶种托,其特征在于,所述晶种托下部为圆柱,上部为圆台。
4.根据权利要求3所述的用于单晶金刚石生长的晶种托,其特征在于,所述圆柱的直径为30mm~45mm,所述圆柱的高度为3mm~9mm。
5.根据权利要求3所述的用于单晶金刚石生长的晶种托,其特征在于,所述圆台的高度为1mm~2mm,圆台上表面直径为20mm~35mm。
6.根据权利要求1所述的用于单晶金刚石生长的晶种托,其特征在于,所述凹球面曲率半径不小于113mm。
7.根据权利要求1所述的用于单晶金刚石生长的晶种托,其特征在于,所述贯穿孔(5)为正方形孔,所述晶种垫(6)为正方形垫。
8.根据权利要求7所述的用于单晶金刚石生长的晶种托,其特征在于,所述正方形孔边长为5mm~10mm。
9.根据权利要求1所述的用于单晶金刚石生长的晶种托,其特征在于,所述晶种垫(6)以滑配的方式置于所述贯穿孔(5)内。
10.根据权利要求7所述的用于单晶金刚石生长的晶种托,其特征在于,所述正方形垫边长为4.9mm~9.9mm,厚度为2mm~9mm。
CN201910164039.XA 2019-03-05 2019-03-05 用于单晶金刚石生长的晶种托 Pending CN111663179A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910164039.XA CN111663179A (zh) 2019-03-05 2019-03-05 用于单晶金刚石生长的晶种托

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910164039.XA CN111663179A (zh) 2019-03-05 2019-03-05 用于单晶金刚石生长的晶种托

Publications (1)

Publication Number Publication Date
CN111663179A true CN111663179A (zh) 2020-09-15

Family

ID=72381443

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910164039.XA Pending CN111663179A (zh) 2019-03-05 2019-03-05 用于单晶金刚石生长的晶种托

Country Status (1)

Country Link
CN (1) CN111663179A (zh)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130272928A1 (en) * 2012-04-12 2013-10-17 Devi Shanker Misra Apparatus for the deposition of diamonds by microwave plasma chemical vapour deposition process and substrate stage used therein
CN204281889U (zh) * 2014-12-01 2015-04-22 常州宝颐金刚石科技有限公司 一种用于生长金刚石单晶的新型籽晶托盘
CN105525344A (zh) * 2015-12-23 2016-04-27 中国科学院深圳先进技术研究院 用于金刚石单晶同质外延的籽晶托盘、基台组件及其应用
CN206828679U (zh) * 2017-06-16 2018-01-02 北京科技大学 微波等离子体化学气相沉积法生长单晶金刚石用的沉积台
CN209906927U (zh) * 2019-03-05 2020-01-07 中国科学院物理研究所 用于单晶金刚石生长的晶种托

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130272928A1 (en) * 2012-04-12 2013-10-17 Devi Shanker Misra Apparatus for the deposition of diamonds by microwave plasma chemical vapour deposition process and substrate stage used therein
CN204281889U (zh) * 2014-12-01 2015-04-22 常州宝颐金刚石科技有限公司 一种用于生长金刚石单晶的新型籽晶托盘
CN105525344A (zh) * 2015-12-23 2016-04-27 中国科学院深圳先进技术研究院 用于金刚石单晶同质外延的籽晶托盘、基台组件及其应用
CN206828679U (zh) * 2017-06-16 2018-01-02 北京科技大学 微波等离子体化学气相沉积法生长单晶金刚石用的沉积台
CN209906927U (zh) * 2019-03-05 2020-01-07 中国科学院物理研究所 用于单晶金刚石生长的晶种托

Similar Documents

Publication Publication Date Title
CN206828679U (zh) 微波等离子体化学气相沉积法生长单晶金刚石用的沉积台
CN215856452U (zh) 一种基于微波等离子体化学气相沉积的单晶金刚石基片台
CN201456253U (zh) 一种硅单晶切割籽晶专用夹具
CN204281889U (zh) 一种用于生长金刚石单晶的新型籽晶托盘
CN209906927U (zh) 用于单晶金刚石生长的晶种托
KR101704147B1 (ko) 다결정 실리콘 제조 장치 및 다결정 실리콘 제조 방법
CN111441037B (zh) 一种用于微波等离子体沉积金刚石膜装置中的刀具托盘
CN111663179A (zh) 用于单晶金刚石生长的晶种托
CN113355746B (zh) 一种扩大金刚石籽晶面积的沉积部和方法
US20200208293A1 (en) Method for growing crystal boule
CN107955967A (zh) 金刚石单晶生长装置及方法
CN113652748B (zh) 一种具有环形阻隔带的籽晶及其加工方法
CN215517746U (zh) 一种微波化学气相沉积法制备单晶金刚石用的沉积台
CN218345594U (zh) 一种单晶炉用托杆及单晶炉
CN216360513U (zh) 一种mpcvd装置用单晶金刚石生长晶种托
CN114016005B (zh) 一种单晶金刚石多片共同生长的制备方法
KR20100095285A (ko) 실리콘 카바이드 기판 제조방법
CN115012038A (zh) 一种籽晶支撑装置
CN106113296A (zh) 一种多晶硅样芯的制备方法
CN217026141U (zh) 一种碳化硅单晶生长用石墨坩埚结构
CN108203841B (zh) 一种提高区熔硅单晶生长过程中放肩成功率的方法
CN219004870U (zh) 自动焊锡机防撞料装置
CN205966995U (zh) 一种在板状金属表面制备层片状梯度结构的装置
CN218711031U (zh) 一种降低碳化硅单晶内部碳包体缺陷密度的装置
CN118308783B (zh) 一种籽晶夹具

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination