CN103069055A - 尺寸性二氧化硅基多孔硅结构及其制造方法 - Google Patents
尺寸性二氧化硅基多孔硅结构及其制造方法 Download PDFInfo
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 160
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- 238000000034 method Methods 0.000 title claims abstract description 50
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims description 24
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Abstract
本发明考虑了制造含多孔硅层的尺寸性二氧化硅基基材或结构的方法。根据一个实施方式,通过在加热的惰性气氛中使金属气体与二氧化硅玻璃基材反应,将氧从所述基材的原子元素组成中提取出来,以沿着所述基材的表面形成金属-氧复合物。将所述金属-氧复合物从所述二氧化硅玻璃基材的表面除去以产生晶体多孔硅表面部分,并在所述二氧化硅玻璃基材的晶体多孔硅表面部分上形成一层或多层附加层以产生含所述多孔硅层的尺寸性二氧化硅基基材或结构。还考虑了其它实施方式,其中所述基材是玻璃基的玻璃基材,而不一定是二氧化硅基的玻璃基材。本发明还描述了其他的实施方式,并要求专利保护。
Description
要求在先提交的美国申请的权益
本申请根据35U.S.C.§119要求2010年8月24日提交的美国临时申请系列第61/376,379号的优先权,以及根据35U.S.C.§120要求2011年5月4日提交的美国申请系列第13/100,593号的优先权,通过参考将两个申请都纳入本文。
背景技术
本发明涉及尺寸性(dimensional)二氧化硅基多孔硅结构,以及更具体而言,涉及制造所述结构的方法。
发明内容
根据本发明的一个实施方式,提供了一种制造含多孔硅层的尺寸性二氧化硅基结构的方法。根据所述方法,通过在加热的惰性气氛中使金属气体与二氧化硅玻璃基材反应,将氧从所述基材的原子元素组成中提取出来,以沿着所述基材的表面形成金属-氧复合物。将金属-氧复合物从所述二氧化硅玻璃基材的表面除去以产生晶体多孔硅表面部分,并在所述二氧化硅玻璃基材的晶体多孔硅表面部分上形成一层或多层附加层以产生含多孔硅层的尺寸性二氧化硅基结构。还考虑了其它实施方式,其中所述基材是玻璃基的玻璃基材,而不一定是二氧化硅基的玻璃基材。本发明还描述了其他的实施方式,并要求专利保护。
附图说明
当结合以下附图阅读下面对本发明的具体实施方式的详细描述时,可对其形成最好的理解,附图中相同的结构用相同的编号表示,其中:
图1-3示意性说明了根据本发明的一个实施方式制造尺寸性二氧化硅基多孔硅结构的方法;
图4说明了根据本发明另一个实施方式的尺寸性二氧化硅基多孔硅结构;
图5示意性说明了结合本发明二氧化硅基多孔硅层的绝缘体上硅结构;以及
图6示意性说明了结合本发明二氧化硅基多孔硅层的光伏电池。
具体实施方式
本发明的图1-3参考二氧化硅玻璃基材和镁基金属热还原法描述了本发明的制造方法,但是本发明的范围延伸大大超出了特定的金属热还原法。更具体而言,根据所述的制造方法,通过将氧从二氧化硅玻璃基材10的原子元素组成中提取出来,可制造含多孔硅层的尺寸性二氧化硅基结构。所述二氧化硅玻璃基材10可为高纯度熔凝二氧化硅基材、碱土金属铝硼硅酸盐玻璃、或任意类型的含二氧化硅的玻璃。在加热的惰性气氛20中通过使金属气体Mg与所述二氧化硅玻璃基材10反应,将氧从所述二氧化硅玻璃基材10中提取出来,以沿着所述二氧化硅玻璃基材10的表面形成金属-氧复合物30。
为了促进氧提取,将所述惰性气氛20加热至反应温度T,在许多二氧化硅玻璃基材的情况中,该反应温度T将约为650-750℃。例如而非限制性的,对于碱土金属铝硼硅酸盐玻璃,合适的反应温度T将为略低于或等于约675℃,并且可保持约2小时。在大多数情况中,所述二氧化硅玻璃基材10的特征可在于热应变点,并且可将所述惰性气氛20加热至低于所述二氧化硅玻璃基材10的热应变点的反应温度。例如而非限制性的,对于应变点约为669℃的玻璃,可将所述惰性气氛加热至约660℃。对于低压反应腔室考虑采用降低的反应温度。
所述二氧化硅玻璃基材10可包括任意类型的二氧化硅基玻璃,所述二氧化硅基玻璃包括但不限于高纯度熔凝二氧化硅、气凝胶玻璃、碱土金属铝硼硅酸盐玻璃,所述二氧化硅基玻璃可包括硼、磷、钛、锗、锆、钒等元素的氧化物,并且所述二氧化硅基玻璃可被制造成不含附加的砷、锑、钡和卤化物,或者也可不被制造成不含附加的砷、锑、钡和卤化物。出于描述和定义本发明的目的,应注意本文的术语“高纯度熔凝二氧化硅”旨在包括本领域通常公认的高纯度熔凝二氧化硅的组合物和纯度水平。在高纯度熔凝二氧化硅的情况中,考虑所述玻璃可以以下形式存在:可再拉制的玻璃的熔融拉制片、硅的软质玻璃板或用于辊到辊制造的硅层压基材。
尽管主要参考二氧化硅基玻璃和使用Mg作为金属气体来描述本发明的实施方式,还考虑了其它实施方式,其中所述基材是玻璃基玻璃基材,而不一定是二氧化硅基玻璃基材。例如,考虑可使用非二氧化硅玻璃形成剂提供其它玻璃基材,所述非二氧化硅玻璃形成剂包括例如硼、磷、钛、锗、锆、钒的氧化物,以及其它金属氧化物。另外,考虑在不偏离本发明的范围的情况下可采用各种合适的还原性气体。例如而非限制性的,考虑金属还原性气体可包括Mg、Na、Rb或其组合。在一个简化的有点理想的情况中,其中所述金属气体包括Mg,与所述二氧化硅玻璃基材的相应的化学计量反应如下:
2Mg+SiO2→Si+2MgO。
类似的反应将以类似的还原性气体为特征。
在非化学计量或更复杂的情况中,会产生诸如Mg2Si的反应副产物,并且在上述还原步骤后可进行本文所述的副产物去除步骤。为了避免生成副产物及对副产物去除步骤的需要,考虑可对还原反应的化学计量进行调整,使得提供的金属气体的量不足以产生副产物。然而,在许多情况中,玻璃的组成将导致无法避免地产生额外的反应副产物,在该情况中,可通过本文所述的蚀刻和热副产物去除步骤来除去这些额外的副产物。
为了促进还原,在所述金属气体与所述二氧化硅玻璃基材10反应时,可对所述基材10进行微波或射频照射。所述金属气体可衍生自任意常规的或仍待开发的来源,所述来源包括例如施加微波、等离子体或激光升华、电流或等离子体电弧以引发金属气体形成的金属源。在金属气体衍生自金属源的情况中,考虑当所述金属气体与所述二氧化硅玻璃基材反应时可改变金属源的组成以进一步促进还原。
通过用电子辐照所述基材的表面可在所述二氧化硅玻璃基材中形成额外的缺陷。所得缺陷使得通过金属热还原性气体试剂提取氧更容易和广泛,如此在上述金属热还原法之前通过对所述玻璃基材进行电子束辐照可用于促进氧提取。考虑的剂量包括但不限于,约10-75kGy的剂量,采用约125KV的加速电压。考虑更高的剂量和加速电压,并认为可能是有利的。
如图2示意性所示,将沿着所述二氧化硅玻璃基材10的表面形成的金属-氧复合物30从二氧化硅玻璃基材10的表面上除去,以产生晶体多孔硅表面部分,形成多孔硅层40。尽管本发明的各种实施方式不限于具体去除方法,应注意可通过进行反应后酸蚀刻步骤将所述金属-氧复合物30从所述二氧化硅玻璃基材10的表面上除去。例如而非限制性的,反应后酸蚀刻可在1M HCl溶液(HCl:H2O:EtOH摩尔比=0.66:4.72:8.88)中进行至少2小时。根据所述玻璃的孔隙率,一些额外的MgO可能被截留在所述玻璃内部,可能需要使用所述酸性混合物多次冲洗进行更长时间的额外蚀刻。
如图3示意性所示,可在所述二氧化硅玻璃基材10的晶体多孔硅表面部分上形成一层或多层附加层50,以产生包括所述多孔硅层40的尺寸性二氧化硅基结构100。通常而言,所述附加层50包括半导体或晶体覆盖层,并且将所述多孔硅层40用作所述覆盖层外延生长或沉积的晶种层。考虑所述外延生长或沉积层可为例如硅、锗、或另一种半导体或晶体材料。
在所述附加层50包括单晶硅层、微晶硅层、多晶硅层或无定形硅层的情况中,所述方法还可包括使所述附加层50重结晶的步骤,该步骤通过在一定温度和持续时间下进行退火,所述温度和持续时间足以促进结晶并增大覆盖层中的粒度。考虑常规退火配置以及局部激光或焰炬退火可能是合适的。通常,多孔硅层40将提高所述外延生长或沉积硅层50的结晶度。在多晶硅生长的情况中,在玻璃模板上的多孔硅上外延生长或沉积的硅可能具有的粒度为约10纳米至数十微米,例如>20微米。出于描述和定义本发明的目的,应注意微晶硅(有时也称作单晶硅)是其中整个材料的晶体结构是均相的形式。在整个材料中取向、晶格参数和电子性质是恒定的。多晶硅由许多不同晶体取向的较小的硅晶粒组成。微晶硅(有时也称作纳米晶体硅)是类似于无定形硅的多孔硅形式,其中微晶硅具有无定形相。然而,微晶硅在无定形相中具有小晶粒的晶体硅。这与仅由晶体硅晶粒组成的多晶硅不同,所述晶体硅晶粒被晶界分开。
参见图4中所示的尺寸性二氧化硅基结构100',应注意,在许多情况中,所述结构100'将形成在下方二氧化硅玻璃基材70之上,所述下方二氧化硅玻璃基材70不是高纯度熔凝二氧化硅,即包括掺杂剂、添加剂或其它杂质的二氧化硅玻璃基材。例如但非限制性的,铝硼硅酸盐玻璃基材是工业中广泛使用的对象。其它考虑的二氧化硅玻璃基材包括添加剂,例如硼、磷、钛、锗、锆、钒等。在这些情况中,通常将需要利用分离层60以抑制这些杂质从下方玻璃基材70迁移至所述结构100'的剩余部分。例如,所述分离层60可能包括氮化硅介电层。
参见图5所示的绝缘体上硅薄膜晶体管结构200,其中设置各种附加层以形成单晶绝缘体上硅结构,将多孔硅层40用作晶种层,用于包括多孔硅层40的绝缘体上硅结构的外延制造。考虑还可设置本发明的尺寸性二氧化硅基结构以形成光伏电池300(参见图6)、温差电池和其它类似结构。还考虑可设置本发明的尺寸性二氧化硅基结构以形成硅基光电器件,例如发光器件、波导、光子晶体或太阳能电池。在许多上述实施方式中,所述结构将在二氧化硅玻璃基材上形成,所述二氧化硅玻璃基材包括显著量的掺杂剂、添加剂或其它杂质,如铝硼硅酸盐玻璃基材。在这些和其它情况中,考虑在所述结构中将结合入类似于参考图4的上述分离层。
另外,考虑可设置本发明的尺寸性二氧化硅基结构以形成环境界面器件,出于描述和定义本发明的目的,所述环境界面器件是设置以改变外部环境组分、被外部环境组分改变,或者通过其它的方式与外部环境组分相互联系的器件,所述外部环境组分包括例如空气、水、外部主体等。例如而非限制性的,所述环境界面器件可为微反应器、过滤介质或气体传感器,在这些情况中,所述环境界面器件的活性结构中的多孔硅层将包括所述器件的催化层、沸石层或其它活性层。考虑其它环境界面器件,其中将所述多孔硅层设置为疏水层、防指纹接触层或耐化学性或强度提高的表面层。
在本发明的一些实施方式中,将所述二氧化硅玻璃基材设置为包括N型或P型掺杂剂,并且调整氧提取步骤和金属-氧复合物去除步骤,以在所述二氧化硅玻璃基材的晶体多孔硅表面部分中留下显著量的掺杂剂。如果存在足够量的这些掺杂剂,该掺杂剂可向形成在所述二氧化硅玻璃基材的晶体多孔硅表面部分上的附加层提供掺杂剂。例如,典型掺杂剂包括但不限于Al、P、B和As。或者,考虑可通过常规扩散或离子注入技术将N型或P型掺杂剂引入所述二氧化硅玻璃基材的晶体多孔硅表面部分。
在本发明的其它实施方式中,考虑可向所述二氧化硅玻璃基材提供局部膜,用于控制所述二氧化硅玻璃基材的所得晶体多孔硅表面部分的厚度、孔隙率或晶体特征。考虑这些局部膜可为硅酸盐、磷酸盐或任意玻璃形成剂,包括但不限于硼、磷、钛、锗、锆、钒的氧化物和其它金属氧化物。例如而非限制性的,可通过以下方法在所述玻璃上形成局部膜:原子层沉积(ALD)、化学气相沉积(CVD)及其变体(例如PECVD、LPCVD、APCVD)、分子束蒸发(MBE)、溅射沉积等。还考虑向所述二氧化硅玻璃基材的表面提供凹槽、凸起特征或其它纹理,以产生特定光学性质或联合的光电性质,例如光散射。还考虑可调整原料基材玻璃组成,以提高热加工能力,例如JADETM玻璃包含钡,并且在高达725℃的温度是稳定的。另外,考虑可选择玻璃组成以提高光学透明度、偏振性或抗冲击性。
在本发明的其它实施方式中,考虑可通过以下方式使尺寸性二氧化硅基结构致密化:将附加玻璃层或金属氧化物层涂覆在所述二氧化硅玻璃基材的晶体多孔硅表面部分上,并在反应温度下使金属气体与玻璃基材的晶体多孔表面部分反应,以产生致密化的氧基材。该过程可在本文所述的各种金属热反应条件下使用较薄的(例如10-300纳米)玻璃层或金属氧化物层重复多次。
在使所述金属气体与所述二氧化硅玻璃基材反应之前,可在所述二氧化硅玻璃基材上提供一层或多层惰性阻挡层,以促进覆盖层图案化。例如而非限制性的,可在图案化步骤中使用石墨阻挡层。还考虑本发明的制造方法可结合还原剂掺杂步骤,其中使用气态还原剂对所述二氧化硅玻璃基材进行预处理,以使得所述还原剂渗入所述二氧化硅玻璃基材的表面,并促进所述金属气体和所述二氧化硅玻璃基材的反应。例如,为了较快并且较完全的局部还原,可在帕尔(Parr)容器中将所述二氧化硅玻璃基材暴露于加压的氢气和惰性载气。
为了从所述多孔硅中除去无定形硅,本发明的制造方法还可结合反应后酸蚀刻步骤,例如通过HF蚀刻或其它常规或待开发的酸蚀刻方案。考虑在许多情况中,所述反应后酸蚀刻步骤将产生晶体多孔硅,所述晶体多孔硅由X射线衍射光谱表征主要表现出优选的<111>晶体取向。
本发明的制造方法还可结合一个或多个反应后热处理步骤。例如而非限制性的,在超过所述反应温度的反应后温度下在惰性气氛中可对包括本发明的多孔硅层的基材进行处理。更具体而言,在Ar中并在725℃下,对在675℃下处理过2小时并在1M HCL中蚀刻过2小时的基材进行反应后热处理6小时。在大多数情况中,其中将所述惰性气氛加热至约650-750℃的反应温度,所述反应后温度将为高于700℃,例如725-750℃,并且将保持数小时。在高纯度熔凝二氧化硅的情况中,所述反应后处理通常保持约6小时以完全除去Mg2Si。对于碱土金属铝硼硅酸盐玻璃,所述碱土金属铝硼硅酸盐玻璃可被制造成不含附加的砷、锑、钡和卤化物,反应后处理通常保持超过约18小时,并且可以以中间6小时处理步骤间歇地执行。在其中金属气体与所述二氧化硅玻璃基材沿着所述二氧化硅玻璃基材的表面额外形成金属-非氧复合物的反应的情况中,所述反应后热处理可保持一段足以使所述金属-非氧复合物也蒸发的时间。
出于描述和定义本发明的目的,应注意,“尺寸性”基材或“尺寸性”结构是这样一种基材或结构,其中所述基材或结构的尺寸具有预定的实用性形状和大小,即为具体功用设计的尺寸和大小。尺寸性基材和结构可为完全功能性结构、中间结构、部分功能性结构、前体基材或结构、或用于形成中间、部分或完全功能性结构的晶种基材或结构。例如,尺寸性基材和结构可区别于粉末、晶粒、或其它类型的粗糙或精细颗粒物质,所述颗粒物质具有未定义、伪随机、或其它不确定的形状。尺寸性基材和结构还可与纳米结构或纳米颗粒区别开来。尺寸性基材和结构的例子包括但不限于,用于结构生长的晶种基材或片层、薄膜晶体管、光伏电池、温差电池、发光器件、波导、光子晶体、太阳能电池,和其它类似结构。另外,应注意,多孔硅是化学元素硅的一种形式,该形式在其微结构中具有纳米级尺寸的空穴分布,使其表面积/体积比较高,在一些情况中大于500米2/克。还应当注意,在本文中,“至少一种”组分、元素等不应认为选择性使用修饰语“一个”或“一种”限于单独的组分、元素等。
应当指出,本文所用的诸如“优选”、“常规”和“通常”之类的词语不是用来限制本发明要求保护的范围,也不表示某些特征对本发明要求保护的结构或者功能来说是重要的、关键的甚至是必不可少的。相反地,这些术语仅仅用来表示本发明实施方式的特定方面,或者强调可以或者不可以用于本发明特定实施方式的替代的或附加的特征。
描述和限定本发明,特别提出本文中使用的术语“约”表示可被认为是任意定量比较、数值、测量或其他表示法造成的常有的不确定性。还使用词语“基本上”表示数量的表示值可以与所述的参比值有一定的偏离程度,但是不会导致所讨论的主题的基本功能改变。
在结合具体实施方式详细描述了本发明的主题之后,应当指出,本文披露的各种细节不应理解为暗示着这些细节涉及属于本文所述各种实施方式的实质性组成的要素,即便在本文所附的每幅图中都示出了特定要素的情况下也是如此。相反,本文所附权利要求书应理解为唯一表达了本发明的广度和本文所述各项发明的相应范围。此外,在不背离所附权利要求书所限定的本发明范围的前提下,显然可以作出各种改变和变化。更具体来说,尽管本发明的一些方面在本文中被认为是优选的或者特别有益的,但应考虑到本发明不一定限于这些方面。
Claims (20)
1.一种制造含多孔硅层的尺寸性二氧化硅基基材或结构的方法,所述方法包括:
提供二氧化硅玻璃基材;
通过在加热的惰性气氛中使金属气体与所述二氧化硅玻璃基材反应,将氧从所述二氧化硅玻璃基材的原子元素组成中提取出来,以沿着所述二氧化硅玻璃基材的表面形成金属-氧复合物,其中将所述惰性气氛加热至足以促进所述氧提取的反应温度;
从所述二氧化硅玻璃基材的表面除去所述金属-氧复合物,以产生所述二氧化硅玻璃基材的晶体多孔硅表面部分;以及
在所述二氧化硅玻璃基材的晶体多孔硅表面部分上形成一层或多层附加层,以产生含所述多孔硅层的尺寸性二氧化硅基基材或结构。
2.如权利要求1所述的方法,其特征在于:
所述尺寸性二氧化硅基基材或结构包括含有半导体或晶体材料的覆盖层;以及
所述方法还包括将所述多孔硅层用作晶种层,用于所述覆盖层的外延生长或沉积。
3.如权利要求2所述的方法,其特征在于:
所述覆盖层包括单晶硅层、微晶硅层、多晶硅层、或无定形硅层;以及
所述方法还包括使所述覆盖层重结晶的步骤,该步骤通过在一定温度和持续时间下对所述覆盖层进行退火来进行,所述温度和持续时间足以促进结晶并增大所述覆盖层中的粒度。
4.如权利要求1所述的方法,其特征在于:
所述尺寸性二氧化硅基基材或结构是单晶绝缘体上硅结构;以及
所述方法还包括将所述多孔硅层用作晶种层,用于所述绝缘体上硅结构的外延制造。
5.如权利要求4所述的方法,其特征在于,所述含所述多孔硅层的二氧化硅玻璃基材形成于下方的二氧化硅玻璃基材和居于中间的分离层之上,设置所述中间分离层以抑制杂质从所述二氧化硅玻璃基材迁移至所述结构的剩余部分。
6.如权利要求1所述的方法,其特征在于:
所述二氧化硅玻璃基材包括N型或P型掺杂剂;以及
调整所述氧提取和所述金属-氧复合物除去步骤,以在所述二氧化硅玻璃基材的晶体多孔硅表面部分中留下显著量的掺杂剂。
7.如权利要求1所述的方法,其特征在于,向所述二氧化硅玻璃基材提供局部膜,用于控制所述二氧化硅玻璃基材的所得晶体多孔硅表面部分的厚度、孔隙率或晶体特征。
8.如权利要求1所述的方法,其特征在于,所述方法包括图案化步骤,其中在所述金属气体与所述二氧化硅玻璃基材反应之前在所述二氧化硅玻璃基材上提供一层或多层惰性阻挡层。
9.如权利要求1所述的方法,其特征在于,所述方法包括还原剂掺杂步骤,其中使用气态还原剂对所述二氧化硅玻璃基材进行预处理,以使得所述还原剂渗入所述二氧化硅玻璃基材的表面,并促进所述金属气体与所述二氧化硅玻璃基材的反应。
10.如权利要求1所述的方法,其特征在于,所述二氧化硅玻璃基材的特征在于热应变点,并且将所述惰性气氛加热至低于所述二氧化硅玻璃基材的热应变点的反应温度。
11.如权利要求1所述的方法,其特征在于,所述金属气体包含Mg,并且所述金属气体与所述二氧化硅玻璃基材的反应包括:
2Mg+SiO2→Si+2MgO。
12.如权利要求1所述的方法,其特征在于,提供一定量的所述金属气体,所述量满足化学计量反应条件。
13.如权利要求1所述的方法,其特征在于,所述金属气体与所述二氧化硅玻璃基材的反应产生反应副产物,并且所述方法包括一个或多个副产物去除步骤。
14.如权利要求1所述的方法,其特征在于,在所述金属气体与所述二氧化硅玻璃基材反应时,对所述基材施加微波或射频。
15.如权利要求1所述的方法,其特征在于,在加热的惰性气氛中进行所述金属气体与所述二氧化硅玻璃基材反应之前,对所述二氧化硅玻璃基材进行电子束辐照。
16.如权利要求1所述的方法,其特征在于:
所述金属气体与所述二氧化硅玻璃基材的反应沿着所述二氧化硅玻璃基材的表面额外地形成了金属-非氧复合物;以及
所述方法还包括反应后热处理,所述反应后热处理是在惰性气氛中在超过所述反应温度的反应后温度下保持一段时间,该时间足以使所述金属-非氧复合物蒸发。
17.如权利要求1所述的方法,其特征在于,所述方法还包括用于除去所述金属-氧复合物或无定形硅的反应后酸蚀刻步骤。
18.一种制造含多孔玻璃层的尺寸性玻璃基基材或结构的方法,所述方法包括:
提供尺寸性玻璃基材;
通过在加热的惰性气氛中使金属气体与所述玻璃基材反应,将氧从所述玻璃基材的原子元素组成中提取出来,以沿着所述玻璃基材的表面形成金属-氧复合物,其中将所述惰性气氛加热至足以促进所述氧提取的反应温度;以及
从所述玻璃基材的表面除去所述金属-氧复合物,以产生所述玻璃基材的晶体多孔表面部分。
19.如权利要求1所述的方法,其特征在于,通过以下方式使尺寸性二氧化硅基结构致密化:将附加玻璃层或金属氧化物层涂覆在所述二氧化硅玻璃基材的晶体多孔硅表面部分,并在所述反应温度下使金属气体与所述玻璃基材的晶体多孔表面部分反应,以产生致密化的氧基材。
20.一种制造尺寸性二氧化硅基结构的方法,所述结构包括多孔硅层和含半导体或晶体材料的覆盖层,所述方法包括:
提供二氧化硅玻璃基材;
通过在加热的惰性气氛中使金属气体与所述二氧化硅玻璃基材反应,将氧从所述二氧化硅玻璃基材的原子元素组成中提取出来,以沿着所述二氧化硅玻璃基材的表面形成金属-氧复合物,其中将所述惰性气氛加热至低于所述二氧化硅玻璃基材的热应变点但足以促进所述氧提取的反应温度;
通过反应后酸蚀刻从所述二氧化硅玻璃基材的表面除去所述金属-氧复合物,以产生所述二氧化硅玻璃基材的晶体多孔硅表面部分;
在惰性气氛中在超过所述反应温度的反应后温度下进行所述基材的反应后热处理;以及
通过将所述多孔硅层作为晶种层用于所述覆盖层的外延生长或沉积从而在所述二氧化硅玻璃基材的晶体多孔硅表面部分上形成所述覆盖层,以产生含所述多孔硅层的尺寸性二氧化硅基结构。
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