Semiconductor buffer architecture for III-V devices on silicon substrates
    15.
    发明授权
    Semiconductor buffer architecture for III-V devices on silicon substrates 有权
    硅衬底上III-V器件的半导体缓冲架构

    公开(公告)号:US07851780B2

    公开(公告)日:2010-12-14

    申请号:US11498685

    申请日:2006-08-02

    IPC分类号: H01L29/12

    摘要: A composite buffer architecture for forming a III-V device layer on a silicon substrate and the method of manufacture is described. Embodiments of the present invention enable III-V InSb device layers with defect densities below 1×108 cm−2 to be formed on silicon substrates. In an embodiment of the present invention, a dual buffer layer is positioned between a III-V device layer and a silicon substrate to glide dislocations and provide electrical isolation. In an embodiment of the present invention, the material of each buffer layer is selected on the basis of lattice constant, band gap, and melting point to prevent many lattice defects from propagating out of the buffer into the III-V device layer. In a specific embodiment, a GaSb/AlSb buffer is utilized to form an InSb-based quantum well transistor on a silicon substrate.

    摘要翻译: 描述了用于在硅衬底上形成III-V器件层的复合缓冲结构及其制造方法。 本发明的实施方案能够在硅衬底上形成缺陷密度低于1×10 8 cm -2的III-V InSb器件层。 在本发明的一个实施例中,双缓冲层位于III-V器件层和硅衬底之间以滑动位错并提供电隔离。 在本发明的一个实施例中,基于晶格常数,带隙和熔点选择每个缓冲层的材料,以防止许多晶格缺陷从缓冲器传播到III-V器件层中。 在具体实施方式中,GaSb / AlSb缓冲器用于在硅衬底上形成基于InSb的量子阱晶体管。

    Dual crystal orientation circuit devices on the same substrate
    16.
    发明申请
    Dual crystal orientation circuit devices on the same substrate 有权
    双晶体取向电路器件在同一基片上

    公开(公告)号:US20080079003A1

    公开(公告)日:2008-04-03

    申请号:US11529974

    申请日:2006-09-29

    IPC分类号: H01L29/04 H01L21/00

    摘要: Embodiments of the invention provide a substrate with a device layer having different crystal orientations in different portions or areas. One layer of material having one crystal orientation may be bonded to a substrate having another crystal orientation. Then, a portion of the layer may be amorphized and annealed to be re-crystallized to the crystal orientation of the substrate. N- and P-type devices, such as tri-gate devices, may both be formed on the substrate, with each type of device having the proper crystal orientation along the top and side surfaces of the claimed region for optimum performance. For instance, a substrate may have a portion with a crystal orientation along a top and sidewalls of an NMOS tri-gate transistor and another portion having a crystal orientation along parallel top and sidewall surfaces of a PMOS tri-gate transistor.

    摘要翻译: 本发明的实施例提供了具有在不同部分或区域中具有不同晶体取向的器件层的衬底。 具有一个晶体取向的一层材料可以结合到具有另一晶体取向的衬底。 然后,该层的一部分可以非晶化并退火,以再结晶到衬底的晶体取向。 可以在衬底上形成N型和P型器件,例如三栅极器件,每种类型的器件沿着所要求保护的区域的顶表面和侧表面具有适当的晶体取向,以获得最佳性能。 例如,衬底可以具有沿着NMOS三栅极晶体管的顶部和侧壁具有<100>晶体取向的部分,并且沿着PMOS三栅极的平行顶部和侧壁表面具有<110>晶体取向的另一部分 晶体管。

    Bonding of substrates
    20.
    发明授权

    公开(公告)号:US07148122B2

    公开(公告)日:2006-12-12

    申请号:US10925503

    申请日:2004-08-24

    IPC分类号: H01L21/30

    CPC分类号: H01L21/306 H01L21/187

    摘要: In one embodiment, a method comprises placing a first and a second substrate into a reaction chamber, the first substrate being made of an indium antimonide material and having a first surface and the second substrate being made of a silicon or a silicon dioxide material and having a second surface; exposing the first and second surfaces to an oxygen plasma; forming a bond between the first and the second substrates by placing the first surface in contact with the second surface; and annealing the first and the second substrates to strengthen the bond.