Heteroepitaxy of multiconstituent material by means of a _template layer
    2.
    发明授权
    Heteroepitaxy of multiconstituent material by means of a _template layer 失效
    通过模板层进行多成像材料的异质外延

    公开(公告)号:US4477308A

    公开(公告)日:1984-10-16

    申请号:US429291

    申请日:1982-09-30

    摘要: The method for growing heteroepitaxial multiconstituent material on a substrate comprises deposition of a thin disordered layer of a "template-forming" material, i.e., material containing at least one constituent of the multiconstituent material to be grown, and differing in chemical composition from at least the substrate material, on the substrate surface at a relatively low deposition temperature, raising the substrate temperature to an intermediate transformation temperature, thereby causing the template-forming material to undergo a reaction that results in formation of "template" material, typically material having substantially the same composition as the multiconstituent material to be grown. Onto the thus formed template layer is then deposited the material for the epitaxial multiconstituent layer. This general process is exemplified by the growth of NiSi.sub.2 on a Si substrate, by first depositing at room temperature about 18.ANG. of Ni (the template-forming material), onto an atomically clean and undamaged Si(111) surface, heating the substrate to about 500.degree. C. for about 4 minutes (thereby reacting the Ni with Si from the substrate to form template material), followed by deposition, onto the now template-covered substrate, of about 250.ANG. of Ni at a rate of about 2.ANG./sec, with the (template-covered) substrate maintained at about 775.degree. C. The inventive method has wide applicability, and permits, inter alia, growth of essentially perfect epitaxial CoSi.sub.2 or NiSi.sub.2 on Si(100). Material grown by the method can be in form of an essentially continuous layer or a patterned layer, and can serve as the substrate for the growth thereon of further epitaxial material of different chemical composition.

    摘要翻译: 用于在衬底上生长异质外延多构成材料的方法包括沉积“模板形成”材料的薄无序层,即,包含至少一种待成长的多构成材料的成分的材料,并且化学组成不同于至少 衬底材料,在相对低的沉积温度下在衬底表面上,将衬底温度升高到中间转变温度,从而导致模板形成材料经历导致形成“模板”材料的反应,通常材料具有基本上 与要生长的多成分材料相同的组成。 然后在这样形成的模板层上沉积外延多成像层的材料。 该通用方法的例子是在Si衬底上NiSi2的生长,首先在室温下沉积约18安培的Ni(模板形成材料)到原子清洁和未损坏的Si(111)表面上,将衬底加热至 约500℃约4分钟(从而使Ni与来自衬底的Si反应形成模板材料),然后以大约2安培的速率沉积到现在的模板覆盖的衬底上约为250埃的Ni /(模板覆盖)衬底保持在约775℃。本发明的方法具有广泛的适用性,并且尤其允许在Si(100)上生长基本上完美的外延CoSi 2或NiSi 2。 通过该方法生长的材料可以是基本上连续的层或图案化层的形式,并且可以用作其上生长具有不同化学组成的另外的外延材料的衬底。