摘要:
A bonded silicon wafer is produced by a method comprising an oxygen ion implantation step on a silicon wafer for active layer having the specified wafer face; a step of bonding the silicon wafer for active layer to a silicon wafer for support; a first heat treatment step; an inner SiO2 layer exposing step; a step of removing the inner SiO2 layer; and a planarizing step of polishing a silicon wafer composite or subjecting the silicon wafer composite to a heat treatment in a reducing atmosphere (a second heat treatment step).
摘要:
In a method for producing a bonded wafer by bonding a wafer for active layer and a wafer for support layer and thinning the wafer for active layer according to the invention, oxygen ions are implanted into the wafer for active layer at a state of holding a temperature of the wafer for active layer below 200° C. under a dose of 5×1015 to 5×1016 atoms/cm2, whereby there can be obtained a bonded wafer being excellent in the thickness uniformity after thinning and having a dramatically improved surface roughness.
摘要翻译:在通过粘合用于有源层的晶片和用于支撑层的晶片并且使根据本发明的有源层的晶片变薄的方法来制造接合晶片的方法中,在保持温度的状态下将氧离子注入用于有源层的晶片 的活性层的晶片在5×10 15〜5×10 16原子/ cm 2的剂量下在200℃以下,由此可以获得在变薄后的厚度均匀性优异并且显着改善表面粗糙度的接合晶片。
摘要:
A bonded silicon wafer is produced by a method including an oxygen ion implantation step on a silicon wafer for active layer having the specified wafer face; a step of bonding the silicon wafer for active layer to a silicon wafer for support; a first heat treatment step; an inner SiO2 layer exposing step; a step of removing the inner SiO2 layer; and a planarizing step of polishing a silicon wafer composite or subjecting the silicon wafer composite to a heat treatment in a reducing atmosphere (a second heat treatment step).
摘要:
In a method for producing a bonded wafer by bonding a wafer for active layer and a wafer for support layer and thinning the wafer for active layer according to the invention, oxygen ions are implanted into the wafer for active layer at a state of holding a temperature of the wafer for active layer below 200° C. under a dose of 5×1015 to 5×1016 atoms/cm2, whereby there can be obtained a bonded wafer being excellent in the thickness uniformity after thinning and having a dramatically improved surface roughness.
摘要翻译:在通过粘合用于有源层的晶片和用于支撑层的晶片并且使根据本发明的有源层的晶片变薄的方法来制造接合晶片的方法中,在保持温度的状态下将氧离子注入用于有源层的晶片 的活性层的晶片在5×10 15〜5×10 16原子/ cm 2的剂量下在200℃以下,由此可以获得在变薄后的厚度均匀性优异并且显着改善表面粗糙度的接合晶片。
摘要:
A method for manufacturing an SOI substrate includes steps of forming a first oxide film on a surface of a first silicon substrate; implanting hydrogen ions into the surface of the first silicon substrate on which the first oxide film is formed to form an ion implant region inside the first silicon substrate; removing the entire or the portion of first oxide film; forming a laminate by bonding the second silicon substrate to a hydrogen ion-implanted surface of the first silicon substrate with the first oxide film, or second oxide film formed on a surface of the second silicon substrate, or the first oxide film and second oxide film, interposed therebetween; and subjecting the laminate to a heat treatment at a predetermined temperature to separate the first silicon substrate along the ion implant region, thereby obtaining an SOI substrate including a thin SOI layer formed on the second silicon substrate with the oxide film interposed therebetween. The method can reduce a degree of contamination from heavy metals inside the SOI substrate.
摘要:
Adhesion of particles due to static buildup during a laminated substrate manufacturing process is constrained, so as to reduce generation of a void or a blister in a lamination step and improve yield. A laminate 13 is formed by superimposing a first semiconductor substrate 11, which is to be an active layer, on a second semiconductor substrate 12, which is to be a supporting substrate, via an oxide film 11a. Electric resistance of either or both of the first and second semiconductor substrates 11 and 12 before superimposition is 0.005-0.2 Ωcm.
摘要:
A bonded wafer is produced by removing a part or all of native oxide films formed on each surface of both a wafer for active layer and a wafer for support substrate to be bonded; forming a uniform oxide film with a thickness of less than 5 nm on at least one surface of these wafers by a given oxide film forming method; bonding the wafer for active layer to the wafer for support substrate through the uniform oxide film; thinning the wafer for active layer; and subjecting the bonded wafer to a given heat treatment in a non-oxidizing atmosphere to substantially remove the uniform oxide film existing in the bonding interface.
摘要:
There is provided a method for suppressing the occurrence of defects such as voids or blisters even in the laminated wafer having no oxide film wherein hydrogen ions are implanted into a wafer for active layer having no oxide film on its surface to form a hydrogen ion implanted layer, and ions other than hydrogen are implanted up to a position that a depth from the surface side the hydrogen ion implantation is shallower than the hydrogen ion implanted layer, and the wafer for active layer is laminated onto a wafer for support substrate, and then the wafer for active layer is exfoliated at the hydrogen ion implanted layer.
摘要:
There is provided a method for suppressing the occurrence of defects such as voids or blisters even in the laminated wafer having an oxide film of a thickness thinner than the conventional one, wherein hydrogen ions are implanted into a wafer for active layer having an oxide film of not more than 50 nm in thickness to form a hydrogen ion implanted layer, and ions other than hydrogen are implanted up to a position that a depth from the surface side the hydrogen ion implantation is shallower than the hydrogen ion implanted layer, and the wafer for active layer is laminated onto a wafer for support substrate through the oxide film, and then the wafer for active layer is exfoliated at the hydrogen ion implanted layer.
摘要:
There is provided a method for suppressing the occurrence of defects such as voids or blisters even in the laminated wafer having an oxide film of a thickness thinner than the conventional one, wherein hydrogen ions are implanted into a wafer for active layer having an oxide film of not more than 50 nm in thickness to form a hydrogen ion implanted layer, and ions other than hydrogen are implanted up to a position that a depth from the surface side the hydrogen ion implantation is shallower than the hydrogen ion implanted layer, and the wafer for active layer is laminated onto a wafer for support substrate through the oxide film, and then the wafer for active layer is exfoliated at the hydrogen ion implanted layer.