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    • 81. 发明授权
    • Semiconductor substrates having useful and transfer layers
    • 具有有用和转移层的半导体衬底
    • US07655537B2
    • 2010-02-02
    • US12186948
    • 2008-08-06
    • Bruno GhyselenFabrice Letertre
    • Bruno GhyselenFabrice Letertre
    • H01L21/30
    • H01L21/3148H01L21/318H01L21/76254H01L29/1608H01L29/165H01L29/2003H01L29/267Y10T428/24479
    • A method of fabricating composite substrates by associating a transfer layer with an intermediate support to form an intermediate substrate of predetermined thickness with the transfer layer having a free surface; providing a sample carrier having a surface and a recess that has a depth that is approximate the same as the predetermined thickness of the intermediate substrate so that the transfer layer free surface is positioned flush with the sample carrier surface; providing a support layer both on the transfer layer free surface and on a portion of the sample carrier surface surrounding the recess; removing the portion of the support layer that extends beyond the intermediate substrate; and detaching the transfer layer and support layer from its intermediate support to form the composite substrate. The support layer is made of a deposited material that has a lower quality than that of the intermediate support. A bonding layer may be included on one of the intermediate support or the useful layer, or both, to facilitate bonding of the layers. The final substrates are useful in optic, electronic, or optoelectronic applications.
    • 一种通过使转印层与中间载体缔合以形成具有预定厚度的中间基底的方法,该转印层具有自由表面; 提供具有表面的样品载体和具有与中间基板的预定厚度大致相同的深度的凹部,使得转印层自由表面与样品载体表面齐平; 在转移层自由表面和围绕凹部的样品载体表面的一部分上提供支撑层; 移除延伸超过中间基板的支撑层的部分; 并且从中间支撑件分离转移层和支撑层以形成复合衬底。 支撑层由具有比中间支撑件低的质量的沉积材料制成。 粘合层可以包括在中间支撑体或有用层之一或两者上,以便于层的粘合。 最终的底物可用于光学,电子或光电子应用。
    • 84. 发明授权
    • Method for manufacturing a free-standing substrate made of monocrystalline semiconductor material
    • 制造由单晶半导体材料制成的独立基板的方法
    • US07407869B2
    • 2008-08-05
    • US11212795
    • 2005-08-29
    • Bruno GhyselenFabrice LetertreCarlos Mazure
    • Bruno GhyselenFabrice LetertreCarlos Mazure
    • H01L21/365
    • C30B29/36H01L21/76254
    • A method for manufacturing a free-standing substrate made of a semiconductor material. A first assembly is provided and it includes a relatively thinner nucleation layer of a first material, a support of a second material, and a removable bonding interface defined between facing surfaces of the nucleation layer and support. A substrate of a relatively thicker layer of a third material is grown, by epitaph on the nucleation layer, to form a second assembly with the substrate attaining a sufficient thickness to be free-standing. The third material is preferably a monocrystalline material. Also, the removable character of the bonding interface is preserved with at least the substrate being heated to an epitaxial growth temperature. The coefficients of thermal expansion of the second and third materials are selected to be different from each other by a thermal expansion differential, determined as a function of the epitaxial growth temperature or subsequent application of external mechanical stresses, such that, as the second assembly cools from the epitaxial growth temperature, stresses are induced in the removable bonding interface to facilitate detachment of the nucleation layer from the substrate.
    • 一种制造由半导体材料制成的自立式基板的方法。 提供了第一组件,并且其包括第一材料的相对更薄的成核层,第二材料的支撑体和限定在成核层和支撑体的相对表面之间的可去除的结合界面。 通过在成核层上外延生长相对较厚的第三材料层的衬底,以形成第二组件,其中衬底获得足够的厚度以使其独立。 第三种材料优选是单晶材料。 而且,至少将衬底加热到​​外延生长温度来保存接合界面的可去除特性。 第二和第三材料的热膨胀系数被选择为相互不同的热膨胀差异,其被确定为外延生长温度的函数或随后的外部机械应力的应用,使得当第二组件冷却时 从外延生长温度,在可除去的结合界面中诱发应力以促进成核层与基底的分离。
    • 87. 发明授权
    • Methods for transferring a useful layer of silicon carbide to a receiving substrate
    • 将有用的碳化硅层转移到接收衬底的方法
    • US07262113B2
    • 2007-08-28
    • US11196733
    • 2005-08-04
    • Bruno GhyselenFabrice Letertre
    • Bruno GhyselenFabrice Letertre
    • H01L21/30
    • H01L21/02032H01L21/187H01L21/2007H01L21/26586H01L21/266H01L21/7602H01L21/76254
    • Methods for transferring a useful layer of silicon carbide to a receiving substrate are described. In an embodiment, the invention relates to a method for recycling of a silicon carbide source substrate by removal of the excess zone followed by a finishing step to prepare the source substrate for recycling and reuse. Preferably, the excess zone is removed by a thermal budget where the temperature and time of such treatment causes exfoliation of the excess zone. The finishing step is performed in a manner to provide the desired surface roughness for the substrate so that it can be recycled for re-use. The technique includes implanting at least H+ ions through a front face of a source substrate of silicon carbide with an implantation energy E greater than or equal to 95 keV and an implantation dose D chosen to form an optimal weakened zone near a mean implantation depth, the optimal weakened zone defining the useful layer and a remainder portion of the source substrate. The method also includes bonding the front face of the source substrate to a contact face of the receiving substrate, and detaching the useful layer from the remainder portion of the source substrate along the weakened zone while minimizing or avoiding forming an excess zone of silicon carbide material at the periphery of the useful layer that was not transferred to the receiving substrate during detachment.
    • 描述了将有用的碳化硅层转移到接收衬底的方法。 在一个实施方案中,本发明涉及一种通过去除过量区域再循环碳化硅源衬底的方法,随后进行精整步骤以制备用于再循环和再利用的源衬底。 优选地,通过热预算去除过量区域,其中这种处理的温度和时间引起过剩区域的剥离。 精加工步骤以为基材提供所需的表面粗糙度的方式进行,使得其可再循环以供再利用。 该技术包括将至少H + +离子注入到具有大于或等于95keV的注入能量E的碳化硅源极基底的前表面上,并且选择植入剂量D以形成最佳弱化 区域,平均植入深度附近,最佳弱化区域限定有用层和源极衬底的剩余部分。 该方法还包括将源极基板的正面接合到接收基板的接触面,并且沿着弱化区域将有用层与源极基板的剩余部分分离,同时最小化或避免形成碳化硅材料的过剩区域 在有用层的外围,在分离期间未被转移到接收基板。