CN117438391B - 一种高热导率3C-SiC多晶基板及其制备方法 - Google Patents
一种高热导率3C-SiC多晶基板及其制备方法 Download PDFInfo
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- ZDHXKXAHOVTTAH-UHFFFAOYSA-N trichlorosilane Chemical compound Cl[SiH](Cl)Cl ZDHXKXAHOVTTAH-UHFFFAOYSA-N 0.000 claims description 8
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Abstract
本发明提供了一种高热导率3C‑SiC多晶基板及其制备方法,涉及半导体材料制备技术领域,所述高热导率3C‑SiC多晶基板的热导率为400‑450,晶型为100%的3C‑SiC,组织为多晶,晶粒为沿厚度方向的柱状晶,晶粒取向为(111)方向,通过化学气相沉积方法,在一定温度和压力下,在Si单晶基底上,且Si单晶基底的表面为完全正轴的Si(111)面,生长晶粒尺寸较大和取向一致的3C‑SiC多晶层,消除了晶界对沿厚度方向导热过程中晶格振动的散射作用,增加了沿厚度方向的热导率,使得基于3C‑SiC多晶基板的复合3C‑SiC基板具有优异的散热性能。
Description
技术领域
本发明涉及半导体材料制备技术领域,具体涉及一种高热导率3C-SiC多晶基板及其制备方法。
背景技术
碳化硅材料具有耐高温、耐高压、耐辐射、耐化学腐蚀、硬度大、热导率大等优点。由3C-SiC材料构成的基板可用来制作半导体工艺中的加热板、聚焦环、保护环等零件。
由于3C-SiC基板相较于4H-SiC晶圆具有更低的生产成本,最近,较厚的3C-SiC基板被用来作为支撑层,与较薄的4H-SiC晶圆复合,形成比完全含4H-SiC的晶圆更低成本的复合碳化硅晶圆。该复合碳化硅晶圆在经历外延、刻蚀、离子注入、封装等步骤后被制作成MOSFET等器件。相较于其他用途的碳化硅基板,该类型的3C-SiC基板希望具有更高的热导率,以提高复合碳化硅基板的散热性能。
化学气相沉积(CVD)方法是制造3C-SiC基板的常用方法。其主要过程为含Si和C的气态物质在基材表面经历化学反应形成固态的3C-SiC,并生长在基材表面。随着时间延长,在基材上形成一定厚度的3C-SiC基板,通过研磨或化学反应等方法剥离基材,形成单一材质的3C-SiC基板。
通过CVD方法形成的3C-SiC一般呈现无特定取向的多晶结构。其原因在于用来生长3C-SiC多晶的基底为石墨板,石墨板的表面呈现各个晶体方向,导致在石墨板上生长的3C-SiC多晶呈现各种晶粒取向。由于固体导热依赖于晶格振动传递,晶界对于晶格振动具有散射作用,导致晶界降低材料的导热系数。现有技术已经公开了晶界显著降低3C-SiC多晶的热导率,并进一步公开了在石墨上沉积3C-SiC多晶,获得了306的热导率。但是,相较于3C-SiC单晶约500/>的热导率,3C-SiC多晶基板的热导率仍有显著的提升空间。
综上所述,需要开发一种新的3C-SiC多晶基板及其制备方法,以提高3C-SiC多晶基板的热导率。
发明内容
鉴于现有技术中存在的问题,本发明提供了一种高热导率3C-SiC多晶基板及其制备方法,所述高热导率3C-SiC多晶基板的热导率为400-450,晶型为100%的3C-SiC,组织为多晶,晶粒为沿厚度方向的柱状晶,晶粒取向为(111)方向,通过化学气相沉积方法,在一定温度和压力下,在Si单晶基底上,且Si单晶基底的表面为完全正轴的Si(111)面,生长晶粒尺寸较大和取向一致的3C-SiC多晶层,消除了晶界对沿厚度方向导热过程中晶格振动的散射作用,增加了沿厚度方向的热导率,使得基于3C-SiC多晶基板的复合3C-SiC基板具有优异的散热性能。
为达此目的,本发明采用以下技术方案:
本发明的目的之一在于提供一种高热导率3C-SiC多晶基板,所述高热导率3C-SiC多晶基板的热导率为400-450,晶型为100%的3C-SiC,组织为多晶,晶粒为沿厚度方向的柱状晶,晶粒取向为(111)方向。
本发明所述高热导率3C-SiC多晶基板呈现晶粒尺寸较大和取向一致的3C-SiC柱状晶多晶厚膜,消除了晶界对沿厚度方向导热过程中晶格振动的散射作用,增加了沿厚度方向的热导率,提高了基于3C-SiC多晶基板的复合3C-SiC基板的散热性能。
需要说明的是,本发明中,所述高热导率3C-SiC多晶基板的热导率为400-450,例如400/>、410/>、420/>、430/>、440/>或450/>等,但并不仅限于所列举的数值,上述数值范围内其他未列举的数值同样适用。
作为本发明优选的技术方案,所述高热导率3C-SiC多晶基板的厚度≥0.5mm,柱状晶的平均晶粒直径为0.5-3mm,例如0.5mm、1mm、1.5mm、2mm、2.5mm或3mm等,但并不仅限于所列举的数值,上述数值范围内其他未列举的数值同样适用。
需要说明的是,本发明中,高热导率3C-SiC多晶基板的晶粒为沿厚度方向的柱状晶,而柱状晶的近圆形端面平行于Si单晶基底的表面,且柱状晶的平均晶粒直径为0.5-3mm。
本发明的目的之二在于提供一种目的之一所述的高热导率3C-SiC多晶基板的制备方法,所述制备方法包括如下步骤:
(1)采用化学气相沉积在Si单晶基底上生长3C-SiC多晶层,所述Si单晶基底的表面为完全正轴的Si(111)面,得到Si/3C-SiC复合体;
(2)对步骤(1)所述Si/3C-SiC复合体的侧面进行切割,并将其切割成圆形,得到3C-SiC/Si/3C-SiC复合体;
(3)将步骤(2)所述3C-SiC/Si/3C-SiC复合体去除Si单晶基底,依次进行研磨与抛光,得到高热导率3C-SiC多晶基板。
本发明提出通过化学气相沉积方法,在一定温度和压力下,在Si单晶基底上,且Si单晶基底的表面为完全正轴的Si(111)面,生长晶粒取向一致的3C-SiC多晶层,使得3C-SiC多晶层沿厚度方向热导率在400-450之间,使得基于3C-SiC多晶基板的复合3C-SiC基板具有优异的散热性能。
需要说明的是,本发明中,Si单晶基底的表面为完全正轴的Si(111)面,法向为完全正轴的(111)方向。假如使用表面法向为(110)、(100)或其他方向的Si单晶基底,则在生长时会呈现(111)和其他取向混合的晶粒,导致柱状晶生长特征减弱,3C-SiC多晶层的热导率降低。假如使用偏转(111)方向一定角度的Si单晶基底,则在生长时会呈现(111)和其他取向混合的晶粒,导致柱状晶生长特征减弱,3C-SiC多晶层的热导率降低。
作为本发明优选的技术方案,步骤(1)中,所述Si单晶基底的表面粗糙度<0.5nm。
需要说明的是,本发明中,需要控制Si单晶基底的表面粗糙度小于0.5nm,过大的表面粗糙度会导致SiC在生长时形成更多晶界,晶粒尺寸变小,晶界缺陷的增多导致3C-SiC多晶热导率降低。
作为本发明优选的技术方案,步骤(1)中,所述化学气相沉积的生长温度为1200-1300℃,例如1200℃、1210℃、1220℃、1230℃、1240℃、1250℃、1260℃、1270℃、1280℃、1290℃或1300℃等,生长压力为2000-10000Pa,例如2000Pa、3000Pa、4000Pa、5000Pa、6000Pa、7000Pa、8000Pa、9000Pa或10000Pa等,但并不仅限于所列举的数值,上述数值范围内其他未列举的数值同样适用。
需要说明的是,本发明中,由于采用的是Si单晶基底,生长温度需低于1300℃,以防止Si单晶基底软化。而控制生长温度为1200-1300℃,通过工艺参数的调控,易择优生长(111)取向的晶粒。若生长温度低于1200℃,生长速度降低,且柱状晶生长转变为树枝状生长;若生长温度高于1300℃,Si单晶基底发生软化。生长压力需要控制在2000-10000Pa,若生长压力低,会导致生长速度降低,若生长压力过高,会导致柱状晶生长转变为树枝状生长。
作为本发明优选的技术方案,步骤(1)中,所述化学气相沉积的气源为三氯甲基硅烷和氢气,控制三氯甲基硅烷和氢气的流量比为1:(10-20),例如1:10、1:11、1:12、1:13、1:14、1:15、1:16、1:17、1:18、1:19或1:20等,但并不仅限于所列举的数值,上述数值范围内其他未列举的数值同样适用。
需要说明的是,本发明中,采用的化学气相沉积装置可以是水平进气或竖直进气,优选竖直进气;采用的化学气相沉积装置可以是热壁式或冷壁式,优选热壁式。将Si单晶基底固定于腔体内,可以通过悬挂丝固定,也可以是通过其他连接件连接固定。悬挂丝可以是石墨绳子或钼丝,优选钼丝。
需要说明的是,本发明中,用来经过化学反应生成SiC的原料气体为三氯甲基硅烷(CH3SiCl3)。采用鼓泡方法将在常温下呈现液态的三氯甲基硅烷转变为气态。鼓泡时通入的载气为氢气(H2)。通入腔体的稀释气为氢气。生长开始时,先将腔体加热至生长温度,并维持在一定压力,接着通入原料气体和稀释气进行生长,原料气体为三氯甲基硅烷和氢气,三氯甲基硅烷和氢气的流量比为1:(10-20),若三氯甲基硅烷浓度过高,易导致柱状晶生长转变为树枝状生长,若三氯甲基硅烷浓度过低,易导致生长速度降低。
作为本发明优选的技术方案,步骤(1)中,所述3C-SiC多晶层的生长速度为50-100μm/h,例如50μm/h、55μm/h、60μm/h、65μm/h、70μm/h、75μm/h、80μm/h、85μm/h、90μm/h、95μm/h或100μm/h等,所述3C-SiC多晶层的厚度为1-10mm,例如1mm、2mm、3mm、4mm、5mm、6mm、7mm、8mm、9mm或10mm等,但并不仅限于所列举的数值,上述数值范围内其他未列举的数值同样适用。
需要说明的是,本发明中,控制3C-SiC多晶层的生长速度为50-100μm/h,过低的生长速度会降低生产效率,过高的生长速率易导致柱状晶生长转变为树枝状生长。
作为本发明优选的技术方案,步骤(2)中,所述切割为金刚线切割。
作为本发明优选的技术方案,步骤(3)中,所述去除Si单晶基底采用化学腐蚀方法,例如化学原料采用HF酸溶液。
作为本发明优选的技术方案,步骤(3)中,所述研磨使得表面粗糙度<30nm。
需要说明的是,本发明中,所述研磨采用金刚石砂轮双面研磨3C-SiC多晶层表面,使得研磨后的表面粗糙度小于30nm。
作为本发明优选的技术方案,步骤(3)中,所述抛光采用化学机械抛光,使得表面粗糙度<1nm。
需要说明的是,本发明中,所述抛光采用化学机械抛光方法对3C-SiC多晶基板进行单面抛光。抛光面为接近CVD最后生长的表面,相对于接近Si单晶基底的表面,该面附近组织含有较少的位错类缺陷;进一步地,所述抛光包括依次进行的粗抛和精抛,粗抛时,抛光液所用磨料包括金刚石颗粒,抛光后表面粗糙度小于3nm,精抛时,抛光液所用磨料包括二氧化硅颗粒,抛光后表面粗糙度小于1nm。
与现有技术方案相比,本发明至少具有以下有益效果:
本发明提供了一种高热导率3C-SiC多晶基板及其制备方法,所述高热导率3C-SiC多晶基板的热导率为400-450,晶型为100%的3C-SiC,组织为多晶,晶粒为沿厚度方向的柱状晶,晶粒取向为(111)方向,通过化学气相沉积方法,在一定温度和压力下,在Si单晶基底上,且Si单晶基底的表面为完全正轴的Si(111)面,生长晶粒尺寸较大和取向一致的3C-SiC多晶层,消除了晶界对沿厚度方向导热过程中晶格振动的散射作用,增加了沿厚度方向的热导率,使得基于3C-SiC多晶基板的复合3C-SiC基板具有优异的散热性能。
附图说明
图1是本发明所述高热导率3C-SiC多晶基板的制备方法的流程示意图;
图2是本发明步骤(1)中在Si单晶基底上生长的3C-SiC多晶层为择优取向的示意图;
图3是本发明实施例1所得高热导率3C-SiC多晶基板的X射线衍射仪检测谱图;
图4是本发明实施例1所得高热导率3C-SiC多晶基板的截面组织。
具体实施方式
下面结合附图并通过具体实施方式来进一步说明本发明的技术方案。
为更好地说明本发明,便于理解本发明的技术方案,本发明的典型但非限制性的实施例如下:
本发明所述高热导率3C-SiC多晶基板的制备方法的流程示意图如图1所示,所述制备方法包括如下步骤:
(1)采用化学气相沉积在Si单晶基底上生长3C-SiC多晶层,所述Si单晶基底的表面为完全正轴的Si(111)面,得到Si/3C-SiC复合体;
(2)对步骤(1)所述Si/3C-SiC复合体的侧面进行切割,并将其切割成圆形,得到3C-SiC/Si/3C-SiC复合体;
(3)将步骤(2)所述3C-SiC/Si/3C-SiC复合体去除Si单晶基底,依次进行研磨与抛光,得到高热导率3C-SiC多晶基板。
需要说明的是,如图2所示,步骤(1)中,Si单晶基底的表面为完全正轴的Si(111)面,生长的3C-SiC多晶层为择优取向的柱状晶,取向方向为(111)方向;此外,步骤(3)中去除Si单晶基底后,会得到两块圆形的高热导率3C-SiC多晶基板粗品,依次进行研磨与抛光后,同样会得到两块圆形的高热导率3C-SiC多晶基板,但是图1中仅示出了其中一块作为示意说明。
实施例1
本实施例提供了一种高热导率3C-SiC多晶基板的制备方法,所述制备方法包括如下步骤:
(1)采用竖直进气的热壁式化学气相沉积装置在Si单晶基底上生长3C-SiC多晶层,所述Si单晶基底的表面粗糙度为0.25nm,所述Si单晶基底的表面为完全正轴的Si(111)面,所述Si单晶基底通过钼丝固定于腔体中;生长开始时,先将腔体加热至生长温度,并维持在一定压力,生长温度为1300℃,生长压力为10000Pa,接着通入原料气体和稀释气进行生长,原料气体为三氯甲基硅烷和氢气,控制三氯甲基硅烷和氢气的流量比为1:10。生长速度为100μm/h,生长时间为10h,共生长了1mm的3C-SiC多晶层,得到Si/3C-SiC复合体;
(2)对步骤(1)所述Si/3C-SiC复合体的侧面采用金刚线切割,并将其切割成圆形,得到3C-SiC/Si/3C-SiC复合体;
(3)将步骤(2)所述3C-SiC/Si/3C-SiC复合体采用HF酸溶液腐蚀去除Si单晶基底,两块圆形的高热导率3C-SiC多晶基板粗品,采用金刚石砂轮双面研磨3C-SiC多晶层表面,研磨后表面粗糙度为20nm,采用化学机械抛光方法对3C-SiC多晶层进行单面抛光,抛光面为接近CVD最后生长的表面,抛光包含依次进行的粗抛和精抛,粗抛时,抛光液所用磨料包括金刚石颗粒,抛光后表面粗糙度为2.5nm,精抛时,抛光液所用磨料包括二氧化硅颗粒,抛光后表面粗糙度为0.8nm,分别得到两块高热导率3C-SiC多晶基板。
本实施例制备得到的高热导率3C-SiC多晶基板的厚度为0.5mm;经拉曼光谱仪检测,晶型为100%的3C-SiC;经X射线衍射仪检测,晶粒生长方向具有择优取向,为单一的(111)方向,如图3所示;高热导率3C-SiC多晶基板的截面经KOH腐蚀后,观察到为多晶,晶粒为沿厚度方向的柱状晶,柱状晶的平均晶粒直径为0.5mm,所得高热导率3C-SiC多晶基板的截面组织如图4所示;经激光闪光法测量,沿厚度方向,高热导率3C-SiC多晶基板的热导率为400。
实施例2
本实施例提供了一种高热导率3C-SiC多晶基板的制备方法,所述制备方法包括如下步骤:
(1)采用竖直进气的热壁式化学气相沉积装置在Si单晶基底上生长3C-SiC多晶层,所述Si单晶基底的表面粗糙度为0.35nm,所述Si单晶基底的表面为完全正轴的Si(111)面,所述Si单晶基底通过钼丝固定于腔体中;生长开始时,先将腔体加热至生长温度,并维持在一定压力,生长温度为1300℃,生长压力为6000Pa,接着通入原料气体和稀释气进行生长,原料气体为三氯甲基硅烷和氢气,控制三氯甲基硅烷和氢气的流量比为1:15。生长速度为80μm/h,生长时间为12.5h,共生长了1mm的3C-SiC多晶层,得到Si/3C-SiC复合体;
(2)对步骤(1)所述Si/3C-SiC复合体的侧面采用金刚线切割,并将其切割成圆形,得到3C-SiC/Si/3C-SiC复合体;
(3)将步骤(2)所述3C-SiC/Si/3C-SiC复合体采用HF酸溶液腐蚀去除Si单晶基底,两块圆形的高热导率3C-SiC多晶基板粗品,采用金刚石砂轮双面研磨3C-SiC多晶层表面,研磨后表面粗糙度为20nm,采用化学机械抛光方法对3C-SiC多晶层进行单面抛光,抛光面为接近CVD最后生长的表面,抛光包含依次进行的粗抛和精抛,粗抛时,抛光液所用磨料包括金刚石颗粒,抛光后表面粗糙度为2.5nm,精抛时,抛光液所用磨料包括二氧化硅颗粒,抛光后表面粗糙度为0.8nm,分别得到两块高热导率3C-SiC多晶基板。
本实施例制备得到的高热导率3C-SiC多晶基板的厚度为0.5mm;经拉曼光谱仪检测,晶型为100%的3C-SiC;经X射线衍射仪检测,晶粒生长方向具有择优取向,为单一的(111)方向;高热导率3C-SiC多晶基板的截面经KOH腐蚀后,观察到为多晶,晶粒为沿厚度方向的柱状晶,柱状晶的平均晶粒直径为1.5mm;经激光闪光法测量,沿厚度方向,高热导率3C-SiC多晶基板的热导率为420。
实施例3
本实施例提供了一种高热导率3C-SiC多晶基板的制备方法,所述制备方法包括如下步骤:
(1)采用竖直进气的热壁式化学气相沉积装置在Si单晶基底上生长3C-SiC多晶层,所述Si单晶基底的表面粗糙度为0.45nm,所述Si单晶基底的表面为完全正轴的Si(111)面,所述Si单晶基底通过钼丝固定于腔体中;生长开始时,先将腔体加热至生长温度,并维持在一定压力,生长温度为1300℃,生长压力为2000Pa,接着通入原料气体和稀释气进行生长,原料气体为三氯甲基硅烷和氢气,控制三氯甲基硅烷和氢气的流量比为1:20。生长速度为50μm/h,生长时间为20h,共生长了1mm的3C-SiC多晶层,得到Si/3C-SiC复合体;
(2)对步骤(1)所述Si/3C-SiC复合体的侧面采用金刚线切割,并将其切割成圆形,得到3C-SiC/Si/3C-SiC复合体;
(3)将步骤(2)所述3C-SiC/Si/3C-SiC复合体采用HF酸溶液腐蚀去除Si单晶基底,两块圆形的高热导率3C-SiC多晶基板粗品,采用金刚石砂轮双面研磨3C-SiC多晶层表面,研磨后表面粗糙度为20nm,采用化学机械抛光方法对3C-SiC多晶层进行单面抛光,抛光面为接近CVD最后生长的表面,抛光包含依次进行的粗抛和精抛,粗抛时,抛光液所用磨料包括金刚石颗粒,抛光后表面粗糙度为2.5nm,精抛时,抛光液所用磨料包括二氧化硅颗粒,抛光后表面粗糙度为0.8nm,分别得到两块高热导率3C-SiC多晶基板。
本实施例制备得到的高热导率3C-SiC多晶基板的厚度为0.5mm;经拉曼光谱仪检测,晶型为100%的3C-SiC;经X射线衍射仪检测,晶粒生长方向具有择优取向,为单一的(111)方向;高热导率3C-SiC多晶基板的截面经KOH腐蚀后,观察到为多晶,晶粒为沿厚度方向的柱状晶,柱状晶的平均晶粒直径为3mm;经激光闪光法测量,沿厚度方向,高热导率3C-SiC多晶基板的热导率为450。
对比例1
本对比例提供了一种3C-SiC多晶基板的制备方法,相比于实施例1,区别仅在于:步骤(1)中Si单晶基底的表面并不是完全正轴的Si(111)面,而是(111)面偏[001]方向8度。
本对比例制备得到的3C-SiC多晶基板的厚度为0.5mm;经拉曼光谱仪检测,晶型为100%的3C-SiC;经X射线衍射仪检测,晶粒生长方向为80%的(111)方向和20%的(110)方向;3C-SiC多晶基板的截面经KOH腐蚀后,观察到为树枝晶;经激光闪光法测量,沿厚度方向,3C-SiC多晶基板的热导率为350。
对比例2
本对比例提供了一种3C-SiC多晶基板的制备方法,相比于实施例1,区别仅在于:步骤(1)中化学气相沉积的生长压力为1000Pa。
本对比例生长速度为20μm/h,生长时间为50h,共生长了1mm的3C-SiC多晶层。制备得到的3C-SiC多晶基板的厚度为0.5mm;经拉曼光谱仪检测,晶型为100%的3C-SiC;经X射线衍射仪检测,晶粒生长方向具有择优取向,为单一的(111)方向;高热导率3C-SiC多晶基板的截面经KOH腐蚀后,观察到为多晶,晶粒为沿厚度方向的柱状晶,柱状晶的平均晶粒直径为2.8mm;经激光闪光法测量,沿厚度方向,高热导率3C-SiC多晶基板的热导率为430。但是,本对比例所述制备方法的生长速度较慢,生长时间较长,会拉低生产效率。
对比例3
本对比例提供了一种3C-SiC多晶基板的制备方法,相比于实施例1,区别仅在于:步骤(1)中化学气相沉积的生长压力为15000Pa。
本对比例制备得到的3C-SiC多晶基板的厚度为0.5mm;经拉曼光谱仪检测,晶型为100%的3C-SiC;经X射线衍射仪检测,晶粒生长方向为65%的(111)方向和35%的(110)方向;3C-SiC多晶基板的截面经KOH腐蚀后,观察到树枝晶;经激光闪光法测量,沿厚度方向,3C-SiC多晶基板的热导率为290。
综上所述,本发明提供了一种高热导率3C-SiC多晶基板及其制备方法,所述高热导率3C-SiC多晶基板的热导率为400-450,晶型为100%的3C-SiC,组织为多晶,晶粒为沿厚度方向的柱状晶,晶粒取向为(111)方向,通过化学气相沉积方法,在一定温度和压力下,在Si单晶基底上,且Si单晶基底的表面为完全正轴的Si(111)面,生长晶粒尺寸较大和取向一致的3C-SiC多晶层,消除了晶界对沿厚度方向导热过程中晶格振动的散射作用,增加了沿厚度方向的热导率,使得基于3C-SiC多晶基板的复合3C-SiC基板具有优异的散热性能。
本发明通过上述实施例来说明本发明的详细结构特征,但本发明并不局限于上述详细结构特征,即不意味着本发明必须依赖上述详细结构特征才能实施。所属技术领域的技术人员应该明了,对本发明的任何改进,对本发明所选用部件的等效替换以及辅助部件的增加、具体方式的选择等,均落在本发明的保护范围和公开范围之内。
以上详细描述了本发明的优选实施方式,但是,本发明并不限于上述实施方式中的具体细节,在本发明的技术构思范围内,可以对本发明的技术方案进行多种简单变型,这些简单变型均属于本发明的保护范围。
另外需要说明的是,在上述具体实施方式中所描述的各个具体技术特征,在不矛盾的情况下,可以通过任何合适的方式进行组合,为了避免不必要的重复,本发明对各种可能的组合方式不再另行说明。
此外,本发明的各种不同的实施方式之间也可以进行任意组合,只要其不违背本发明的思想,其同样应当视为本发明所公开的内容。
Claims (9)
1.一种高热导率3C-SiC多晶基板,其特征在于,所述高热导率3C-SiC多晶基板的热导率为400-450,晶型为100%的3C-SiC,组织为多晶,晶粒为沿厚度方向的柱状晶,晶粒取向为(111)方向;
所述高热导率3C-SiC多晶基板采用如下制备方法得到,包括如下步骤:
(1)采用化学气相沉积在Si单晶基底上生长3C-SiC多晶层,所述Si单晶基底的表面为完全正轴的Si(111)面,得到Si/3C-SiC复合体;所述化学气相沉积的生长温度为1200-1300℃,生长压力为2000-10000Pa;
(2)对步骤(1)所述Si/3C-SiC复合体的侧面进行切割,并将其切割成圆形,得到3C-SiC/Si/3C-SiC复合体;
(3)将步骤(2)所述3C-SiC/Si/3C-SiC复合体去除Si单晶基底,依次进行研磨与抛光,得到高热导率3C-SiC多晶基板。
2.根据权利要求1所述的高热导率3C-SiC多晶基板,其特征在于,所述高热导率3C-SiC多晶基板的厚度≥0.5mm,柱状晶的平均晶粒直径为0.5-3mm。
3.一种根据权利要求1或2所述的高热导率3C-SiC多晶基板的制备方法,其特征在于,所述制备方法包括如下步骤:
(1)采用化学气相沉积在Si单晶基底上生长3C-SiC多晶层,所述Si单晶基底的表面为完全正轴的Si(111)面,得到Si/3C-SiC复合体;所述化学气相沉积的生长温度为1200-1300℃,生长压力为2000-10000Pa;
(2)对步骤(1)所述Si/3C-SiC复合体的侧面进行切割,并将其切割成圆形,得到3C-SiC/Si/3C-SiC复合体;
(3)将步骤(2)所述3C-SiC/Si/3C-SiC复合体去除Si单晶基底,依次进行研磨与抛光,得到高热导率3C-SiC多晶基板。
4.根据权利要求3所述的制备方法,其特征在于,步骤(1)中,所述Si单晶基底的表面粗糙度<0.5nm。
5.根据权利要求3所述的制备方法,其特征在于,步骤(1)中,所述化学气相沉积的气源为三氯甲基硅烷和氢气,控制三氯甲基硅烷和氢气的流量比为1:(10-20)。
6.根据权利要求3所述的制备方法,其特征在于,步骤(1)中,所述3C-SiC多晶层的生长速度为50-100μm/h,所述3C-SiC多晶层的厚度为1-10mm。
7.根据权利要求3所述的制备方法,其特征在于,步骤(3)中,所述去除Si单晶基底采用化学腐蚀方法。
8.根据权利要求3所述的制备方法,其特征在于,步骤(3)中,所述研磨使得表面粗糙度<30nm。
9.根据权利要求3所述的制备方法,其特征在于,步骤(3)中,所述抛光采用化学机械抛光,使得表面粗糙度<1nm。
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CN107849730A (zh) * | 2015-07-23 | 2018-03-27 | 华威大学 | 在单晶硅上生长外延3C‑SiC |
CN109686656A (zh) * | 2018-11-13 | 2019-04-26 | 中国科学院上海微系统与信息技术研究所 | 一种硅基异质集成碳化硅薄膜结构的制备方法 |
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CN107849730A (zh) * | 2015-07-23 | 2018-03-27 | 华威大学 | 在单晶硅上生长外延3C‑SiC |
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