Method for semiconductor device fabrication
    25.
    发明申请
    Method for semiconductor device fabrication 有权
    半导体器件制造方法

    公开(公告)号:US20050136624A1

    公开(公告)日:2005-06-23

    申请号:US11028248

    申请日:2005-01-03

    摘要: A method of fabricating a semiconductor structure. According to one aspect of the invention, on a first semiconductor substrate, a first compositionally graded Si1-xGex buffer is deposited where the Ge composition x is increasing from about zero to a value less than about 20%. Then a first etch-stop Si1-yGey layer is deposited where the Ge composition y is larger than about 20% so that the layer is an effective etch-stop. A second etch-stop layer of strained Si is then grown. The deposited layer is bonded to a second substrate. After that the first substrate is removed to release said first etch-stop S1-yGey layer. The remaining structure is then removed in another step to release the second etch-stop layer. According to another aspect of the invention, a semiconductor structure is provided. The structure has a layer in which semiconductor devices are to be formed. The semiconductor structure includes a substrate, an insulating layer, a relaxed SiGe layer where the Ge composition is larger than approximately 15%, and a device layer selected from a group consisting of, but not limited to, strained-Siy relaxed Si1-yGey layer, strained Si1-zGey layer, Ge, GaAs, III-V materials, and II-VI materials, where Ge compositions y and z are values between 0 and 1.

    摘要翻译: 一种制造半导体结构的方法。 根据本发明的一个方面,在第一半导体衬底上沉积第一组分梯度的Si 1-x N Ge x N x缓冲层,其中Ge组合物x从约 零到小于约20%的值。 然后沉积第一蚀刻停止Si 1-y Ge层,其中Ge组分y大于约20%,使得该层是有效的蚀刻停止 。 然后生长第二蚀刻停止层的应变Si。 沉积层结合到第二衬底。 之后,移除第一衬底以释放所述第一蚀刻停止层1-y层。 然后在另一步骤中除去剩余的结构以释放第二蚀刻停止层。 根据本发明的另一方面,提供一种半导体结构。 该结构具有要形成半导体器件的层。 半导体结构包括衬底,绝缘层,Ge组分大于约15%的弛豫SiGe层,以及选自但不限于应变Si Si层的器件层, Si 1 Y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y ,GaAs,III-V材料和II-VI材料,其中Ge组分y和z是0和1之间的值。

    Semiconductor device structure
    29.
    发明授权
    Semiconductor device structure 失效
    半导体器件结构

    公开(公告)号:US06940089B2

    公开(公告)日:2005-09-06

    申请号:US10116559

    申请日:2002-04-04

    摘要: A method of fabricating a semiconductor structure. According to one aspect of the invention, on a first semiconductor substrate, a first compositionally graded Si1-xGex buffer is deposited where the Ge composition x is increasing from about zero to a value less than about 20%. Then a first etch-stop Si1-yGey layer is deposited where the Ge composition y is larger than about 20% so that the layer is an effective etch-stop. A second etch-stop layer of strained Si is then grown. The deposited layer is bonded to a second substrate. After that the first substrate is removed to release said first etch-stop Si1-yGey layer. The remaining structure is then removed in another step to release the second etch-stop layer. According to another aspect of the invention, a semiconductor structure is provided. The structure has a layer in which semiconductor devices are to be formed. The semiconductor structure includes a substrate, an insulating layer, a relaxed SiGe layer where the Ge composition is larger than approximately 15%, and a device layer selected from a group consisting of, but not limited to, strained-Si, relaxed Si1-yGey layer, strained S1-zGez layer, Ge, GaAs, III-V materials, and II-VI materials, where Ge compositions y and z are values between 0 and 1.

    摘要翻译: 一种制造半导体结构的方法。 根据本发明的一个方面,在第一半导体衬底上沉积第一组分梯度的Si 1-x N Ge x N x缓冲层,其中Ge组合物x从约 零到小于约20%的值。 然后沉积第一蚀刻停止Si 1-y Ge层,其中Ge组分y大于约20%,使得该层是有效的蚀刻停止 。 然后生长第二蚀刻停止层的应变Si。 沉积层结合到第二衬底。 之后,去除第一衬底以释放所述第一蚀刻停止Si 1-y Ge层。 然后在另一步骤中除去剩余的结构以释放第二蚀刻停止层。 根据本发明的另一方面,提供一种半导体结构。 该结构具有要形成半导体器件的层。 半导体结构包括基底,绝缘层,Ge组分大于约15%的弛豫SiGe层,以及选自但不限于应变Si的弛豫Si