Control of buried oxide in SIMOX
    32.
    发明授权
    Control of buried oxide in SIMOX 有权
    在SIMOX中控制埋氧化物

    公开(公告)号:US07492008B2

    公开(公告)日:2009-02-17

    申请号:US10896812

    申请日:2004-07-22

    IPC分类号: H01L21/336

    CPC分类号: H01L21/76243

    摘要: A method for forming a semiconductor-on-insulator (SOI) substrate is described incorporating the steps of heating a substrate, implanting oxygen into a heated substrate, cooling the substrate, implanting into a cooled substrate and annealing. The steps of implanting may be at several energies to provide a plurality of depths and corresponding buried damaged regions. Prior to implanting, the step of cleaning the substrate surface and/or forming a patterned mask thereon may be performed. The invention overcomes the problem of raising the quality of buried oxide and its properties such as surface roughness, uniform thickness and breakdown voltage Vbd.

    摘要翻译: 描述了一种用于形成绝缘体上半导体(SOI)衬底的方法,其包括加热衬底,将氧注入加热衬底,冷却衬底,注入冷却衬底和退火的步骤。 植入的步骤可以是几种能量以提供多个深度和相应的埋入损伤区域。 在植入之前,可以执行清洁衬底表面和/或在其上形成图案化掩模的步骤。 本发明克服了提高掩埋氧化物质量及其性能如表面粗糙度,均匀厚度和击穿电压Vbd的问题。

    Method for controlled positioning of a compound layer in a multilayer
device
    34.
    发明授权
    Method for controlled positioning of a compound layer in a multilayer device 失效
    化合物层在多层器件中受控定位的方法

    公开(公告)号:US5418188A

    公开(公告)日:1995-05-23

    申请号:US755471

    申请日:1991-09-05

    CPC分类号: H01L21/28518 Y10S438/913

    摘要: A method for controlled positioning of a compound layer such as TiSi.sub.2 or CoSi.sub.2 in a multilayer device such as a semiconductor is disclosed. The compound surface layer is situated adjacent to an intermediate layer comprised of one of the two types of atoms present in the molecules of the adjacent compound surface layer. The intermediate layer is also situated adjacent to a base layer, such as a semiconductor substrate. An epitaxial silicon layer is the suggested intermediate layer where the surface layer is comprised of TiSi.sub.2 or CoSi.sub.2. By simultaneously heating the multilayer device and using an appropriate etching process for selectively removing the atoms from the surface of the compound surface layer which are common in both the compound and intermediate layer (i.e., silicon) the intermediate layer can be reduced in thickness and/or fully consumed while the structural integrity of the compound surface layer remains essentially unchanged. This results in positioning the surface layer directly adjacent to the base layer, thus allowing for the controlled placement of the compound layer in the multilayer device.

    摘要翻译: 公开了一种在诸如半导体的多层器件中控制定位诸如TiSi 2或CoSi 2的化合物层的方法。 复合表面层位于由相邻化合物表面层的分子中存在的两种原子中的一种构成的中间层附近。 中间层也位于与基底层相邻的位置,例如半导体衬底。 外延硅层是建议的中间层,其中表面层由TiSi 2或CoSi 2组成。 通过同时加热多层器件并使用适当的蚀刻工艺来选择性地从化合物和中间层(即硅)中的化合物表面层的表面除去原子,中间层的厚度和/ 或完全消耗,同时复合表面层的结构完整性保持基本不变。 这导致将表面层直接邻近基底层定位,从而允许化合物层在多层器件中的受控放置。