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    • 1. 发明申请
    • Formation of raised source/drain structures in NFET with embedded SiGe in PFET
    • 在PFET中嵌入SiGe的NFET中形成凸起的源极/漏极结构
    • US20070138570A1
    • 2007-06-21
    • US11305584
    • 2005-12-16
    • Yung ChongZhijiong LuoJoo KimJudson Holt
    • Yung ChongZhijiong LuoJoo KimJudson Holt
    • H01L29/76H01L21/8238
    • H01L21/823807H01L21/823814H01L21/823864H01L29/66545H01L29/6656H01L29/66628H01L29/66636
    • A structure and method for forming raised source/drain structures in a NFET device and embedded SiGe source/drains in a PFET device. We provide a NFET gate structure over a NFET region in a substrate and PFET gate structure over a PFET region. We provide NFET SDE regions adjacent to the NFET gate and provide PFET SDE regions adjacent to the PFET gate. We form recesses in the PFET region in the substrate adjacent to the PFET second spacers. We form a PFET embedded source/drain stressor in the recesses. We form a NFET S/D epitaxial Si layer over the NFET SDE regions and a PFET S/D epitaxial Si layer over PFET embedded source/drain stressor. The epitaxial Si layer over PFET embedded source/drain stressor is consumed in a subsequent salicide step to form a stable and low resistivity silicide over the PFET embedded source/drain stressor. We perform a NFET S/D implant by implanting N-type ions into NFET region adjacent to the NFET gate structure and into the NFET S/D stressor Si layer to form the raised NFET source/drains.
    • 用于在NFET器件中形成凸起的源极/漏极结构并在PFET器件中形成嵌入的SiGe源极/漏极的结构和方法。 我们在衬底上的NFET区域和PFET区域上的PFET栅极结构提供NFET栅极结构。 我们提供与NFET栅极相邻的NFET SDE区域,并提供与PFET栅极相邻的PFET SDE区域。 我们在邻近PFET第二间隔物的衬底中的PFET区域中形成凹陷。 我们在凹槽中形成PFET嵌入式源极/漏极应力器。 我们在NFET SDE区域上形成NFET S / D外延Si层,并在PFET嵌入式源极/漏极应力器上形成PFET S / D外延Si层。 在随后的自对准硅化物步骤中,在PFET嵌入式源极/漏极应力源上的外延Si层被消耗,以在PFET嵌入式源极/漏极应力器上形成稳定和低电阻率的硅化物。 我们通过将N型离子注入到与NFET栅极结构相邻的NFET区域中并进入NFET S / D应力Si层来形成NFET S / D注入,以形成升高的NFET源极/漏极。
    • 2. 发明申请
    • Method to control source/drain stressor profiles for stress engineering
    • 控制应力工程源/排泄应力曲线的方法
    • US20070235802A1
    • 2007-10-11
    • US11399016
    • 2006-04-05
    • Yung ChongZhijiong LuoJudson Holt
    • Yung ChongZhijiong LuoJudson Holt
    • H01L21/8234
    • H01L21/823807H01L21/823814H01L29/165H01L29/66628H01L29/66636H01L29/7834H01L29/7848
    • An example embodiment of a strained channel transistor structure comprises the following: a strained channel region comprising a first semiconductor material with a first natural lattice constant; a gate dielectric layer overlying the strained channel region; a gate electrode overlying the gate dielectric layer; and a source region and drain region oppositely adjacent to the strained channel region, one or both of the source region and drain region are comprised of a stressor region comprised of a second semiconductor material with a second natural lattice constant different from the first natural lattice constant; the stressor region has a graded concentration of a dopant impurity and/or of a stress inducing molecule. Another example embodiment is a process to form the graded impurity or stress inducing molecule stressor embedded S/D region, whereby the location/profile of the S/D stressor is not defined by the recess depth/profile.
    • 应变通道晶体管结构的示例性实施例包括以下:包含具有第一自然晶格常数的第一半导体材料的应变通道区域; 覆盖在应变通道区上的栅介质层; 覆盖所述栅介质层的栅电极; 以及源极区域和漏极区域,其与所述应变通道区域相邻地邻近,所述源极区域和漏极区域中的一个或两个由包含第二半导体材料的应力区域构成,所述第二半导体材料具有不同于所述第一自然晶格常数的第二自然晶格常数 ; 应力区域具有掺杂剂杂质和/或应力诱导分子的分级浓度。 另一个示例性实施例是形成渐变杂质或应力诱导分子应力嵌入S / D区域的过程,由此S / D应力器的位置/轮廓不由凹槽深度/轮廓限定。
    • 3. 发明申请
    • METHOD AND STRUCTURE TO FORM SELF-ALIGNED SELECTIVE-SOI
    • 形成自对准选择性SOI的方法和结构
    • US20070278591A1
    • 2007-12-06
    • US11421594
    • 2006-06-01
    • Zhijiong LuoYung ChongKevin DezfulianHuilong ZhuJudson Holt
    • Zhijiong LuoYung ChongKevin DezfulianHuilong ZhuJudson Holt
    • H01L29/76H01L21/8238
    • H01L29/66628H01L29/0653H01L29/665H01L29/6656H01L29/66636
    • Methods of forming a self-aligned, selective semiconductor on insulator (SOI) structure and a related structure are disclosed. In one embodiment, a method includes providing a substrate; forming a gate structure over a channel within the substrate; recessing a portion of the substrate adjacent the channel; forming an insulating layer on a bottom of the recessed portion; and forming a semiconductor material above the insulating layer. An upper surface of the semiconductor material may be sloped. A MOSFET structure may include a substrate; a channel; a source region and a drain region adjacent the channel; a gate structure above the channel and the substrate; a shallow trench isolation (STI) distal from the gate structure; a selectively laid insulating layer in at least one of the source region and the drain region; and an epitaxially grown semiconductor material above the selectively laid insulating layer.
    • 公开了形成自对准选择性半导体绝缘体(SOI)结构和相关结构的方法。 在一个实施例中,一种方法包括提供基底; 在所述衬底内的沟道上形成栅极结构; 使靠近通道的衬底的一部分凹陷; 在所述凹部的底部形成绝缘层; 以及在绝缘层上方形成半导体材料。 半导体材料的上表面可以是倾斜的。 MOSFET结构可以包括衬底; 一个渠道 与沟道相邻的源极区域和漏极区域; 在通道和衬底上方的栅极结构; 远离栅极结构的浅沟槽隔离(STI); 在源极区域和漏极区域中的至少一个中选择性地铺设绝缘层; 以及在选择性铺设的绝缘层上方的外延生长的半导体材料。
    • 4. 发明申请
    • Embedded stressor structure and process
    • 嵌入式应力器结构与过程
    • US20070132038A1
    • 2007-06-14
    • US11297522
    • 2005-12-08
    • Yung ChongZhijiong LuoJoo KimBrian GreeneKern Rim
    • Yung ChongZhijiong LuoJoo KimBrian GreeneKern Rim
    • H01L29/76
    • H01L21/823814H01L21/823807H01L29/165H01L29/66545H01L29/66628H01L29/66636H01L29/7848
    • An example embodiments are structures and methods for forming an FET with embedded stressor S/D regions (e.g., SiGe), a doped layer below the embedded S/D region adjacent to the isolation regions, and a stressor liner over reduced spacers of the FET gate. An example method comprising the following. We provide a gate structure over a first region in a substrate. The gate structure is comprised of gate dielectric, a gate, and sidewall spacers. We provide isolation regions in the first region spaced from the gate structure; and a channel region in the substrate under the gate structure. We form S/D recesses in the first region in the substrate adjacent to the sidewall spacers. We form S/D stressor regions filling the S/D recesses. The S/D stressor regions can be thicker adjacent to the gate structure than adjacent to the isolation regions; We implant dopant ions into the S/D stressor regions and into the substrate below the S/D stressor regions adjacent to the isolation regions to form upper stressor doped regions.
    • 示例性实施例是用于形成具有嵌入的应力源S / D区域(例如,SiGe)的FET的结构和方法,位于与隔离区域相邻的嵌入式S / D区域下方的掺杂层,以及FET上减少的间隔物上的应力衬垫 门。 包括以下的示例性方法。 我们在衬底的第一区域上提供栅极结构。 栅极结构由栅极电介质,栅极和侧壁间隔物组成。 我们提供与栅极结构间隔开的第一区域中的隔离区域; 以及栅极结构下的衬底中的沟道区。 我们在邻近侧壁间隔物的衬底的第一区域中形成S / D凹槽。 形成填充S / D凹槽的S / D应力区域。 与隔离区相邻的S / D应力区可以比栅极结构更厚; 我们将掺杂剂离子注入到S / D应力区域中并进入与隔离区域相邻的S / D应力区域下方的衬底中以形成上部应力源掺杂区域。