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    • 13. 发明申请
    • METHOD AND STRUCTURE TO IMPROVE FORMATION OF SILICIDE
    • 改善硅酸盐形成的方法与结构
    • US20120028430A1
    • 2012-02-02
    • US12843998
    • 2010-07-27
    • Ming CaiAhmet S. OzcanStefan Zollner
    • Ming CaiAhmet S. OzcanStefan Zollner
    • H01L21/336H01L21/28
    • H01L29/6656H01L29/665H01L29/6653H01L29/6659H01L29/7833
    • A method begins with a structure having: a gate insulator on a silicon substrate between a gate conductor and a channel region within the substrate; insulating sidewall spacers on sidewalls of the gate conductor; and source and drain regions within the substrate adjacent the channel region. To silicide the gate and source and drain regions, the method deposits a metallic material over the substrate, the gate conductor, and the sidewalls, and performs a first heating process to change the metallic material into a metal-rich silicide at locations where the metallic material contacts silicon. The method removes the sidewall spacers, and performs a second heating process to change the metal-rich silicide into silicide having a lower metallic concentration than the metal-rich silicide. The silicide thus formed avoids being damaged by the spacer removal process.
    • 一种方法开始于具有以下结构:在硅衬底之间的栅极导体和衬底内的沟道区之间的栅极绝缘体; 在栅极导体的侧壁上的绝缘侧壁间隔物; 衬底内的源极和漏极区域相邻于沟道区域。 为了硅化栅极和源极和漏极区域,该方法将金属材料沉积在衬底,栅极导体和侧壁上,并且执行第一加热过程,以将金属材料改变为富金属硅化物,其中金属 材料接触硅。 该方法除去侧壁间隔物,并且进行第二加热处理以将富金属硅化物改变为具有比富金属硅化物更低的金属浓度的硅化物。 这样形成的硅化物避免了被间隔物去除过程损坏。
    • 17. 发明申请
    • PROCESS OF FORMING AN ELECTRONIC DEVICE INCLUDING A DOPED SEMICONDUCTOR LAYER
    • 形成包含掺杂半导体层的电子器件的工艺
    • US20090042373A1
    • 2009-02-12
    • US11835643
    • 2007-08-08
    • Stefan ZollnerBich-Yen Nguyen
    • Stefan ZollnerBich-Yen Nguyen
    • H01L21/20H01L21/02
    • H01L21/28035H01L21/02532H01L21/02576H01L21/0262H01L21/2807H01L29/4916H01L29/66636H01L29/7833
    • A process can include forming a doped semiconductor layer over a substrate. The process can also include performing an action that reduces a dopant content along an exposed surface of a workpiece that includes the substrate and the doped semiconductor layer. The action is performed after forming the doped semiconductor layer and before the doped semiconductor layer is exposed to a room ambient. In particular embodiments, the doped semiconductor layer includes a semiconductor material that includes a combination of at least two elements selected from the group consisting of C, Si, and Ge, and the doped semiconductor layer also includes a dopant, such as phosphorus, arsenic, boron, or the like. The action can include forming an encapsulating layer, exposing the doped semiconductor layer to radiation, annealing the doped semiconductor layer, or any combination thereof.
    • 工艺可以包括在衬底上形成掺杂半导体层。 该方法还可以包括执行减少沿着包括衬底和掺杂半导体层的工件的暴露表面的掺杂剂含量的动作。 在形成掺杂半导体层之后并且在掺杂半导体层暴露于室内环境之前执行该动作。 在特定实施例中,掺杂半导体层包括半导体材料,其包括选自由C,Si和Ge组成的组中的至少两种元素的组合,并且掺杂半导体层还包括掺杂剂,例如磷,砷, 硼等。 该作用可以包括形成封装层,将掺杂半导体层暴露于辐射,退火掺杂半导体层,或其任何组合。