半导体器件及其制造方法
    3.
    发明申请

    公开(公告)号:WO2012174696A1

    公开(公告)日:2012-12-27

    申请号:PCT/CN2011/001994

    申请日:2011-11-29

    CPC classification number: H01L29/1054 H01L29/66651 H01L29/7833

    Abstract: 提供一种半导体器件及其制造方法,包括:在衬底(10)上形成有绝缘隔离层(30);在绝缘隔离层(30)中形成有绝缘隔离层沟槽(42);在绝缘隔离层沟槽(42)中形成有有源区层(50);在有源区层(50)中和其上形成半导体器件结构;其特征在于:有源区层(50)的载流子迁移率高于衬底(10)的载流子迁移率。该半导体器件由于使用了不同于衬底材料的有源区,提高了沟道区载流子迁移率,从而大幅提高了器件的响应速度,增强了器件的性能。此外,不同于已有的STI制造工序,该半导体器件的制造方法先形成STI后填充形成有源区,避免了STI中出现孔洞的问题,提高了器件的可靠性。

    MOS TRANSISTOR WITH HIGH DOPING GRADIENT UNDER THE GRID
    7.
    发明申请
    MOS TRANSISTOR WITH HIGH DOPING GRADIENT UNDER THE GRID 审中-公开
    MOS晶体管,具有高度均匀的GRADIENT在网格下

    公开(公告)号:WO98047173A1

    公开(公告)日:1998-10-22

    申请号:PCT/FR1998/000751

    申请日:1998-04-14

    CPC classification number: H01L29/66651 H01L21/2205 H01L21/26506 H01L29/7833

    Abstract: The invention concerns an LDD-type MOS transistor comprising under its grid zone a first lightly-doped region (31) followed by a second region with the same type of conductivity with higher doping level with a high doping gradient between the two regions. The interface zone between the two regions contain nitrogen atoms resulting from a nitrogen implantation produced before epitaxy.

    Abstract translation: 本发明涉及一种LDD型MOS晶体管,其在其栅极区域下方包括第一轻掺杂区域(31),之后是具有相同类型导电性的第二区域,具有较高掺杂水平的第二区域和两个区域之间的高掺杂梯度。 两个区域之间的界面区域包含由外延之前产生的氮注入产生的氮原子。

    METHOD FOR FORMING ULTRA-THIN GATE OXIDES
    8.
    发明申请
    METHOD FOR FORMING ULTRA-THIN GATE OXIDES 审中-公开
    形成超薄栅极氧化物的方法

    公开(公告)号:WO1997028560A1

    公开(公告)日:1997-08-07

    申请号:PCT/US1997001729

    申请日:1997-01-30

    CPC classification number: H01L29/66651 H01L21/28167 H01L21/28211

    Abstract: This invention improves the quality of gate oxide dielectric layers using a two-pronged approach, thus permitting the use of much thinner silicon dioxide gate dielectric layers required for lower-voltage, ultra-dense integrated circuits. In order to eliminate defects caused by imperfections in bulk silicon, an in-situ grown epitaxial layer is formed on active areas following a strip of the pad oxide layer used beneath the silicon nitride islands used for masking during the field oxidation process. By growing an epitaxial silicon layer prior to gate dielectric layer formation, defects in the bulk silicon substrate are covered over and, hence, isolated from the oxide growth step. In order to maintain the integrity of the selective epitaxial growth step, the wafers are maintained in a controlled, oxygen-free environment until the epitaxial growth step is accomplished. In order to eliminate defects caused by a native oxide layer, the wafers are maintained in a controlled, oxygen-free environment until being subjected to elevated temperature in a controlled, oxidizing environment. In one embodiment, the oxidizing environment comprises diatomic oxygen, while in another embodiment, the oxidizing environment comprises diatomic oxygen and ozone.

    Abstract translation: 本发明使用双管齐下的方法提高了栅极氧化物电介质层的质量,从而允许使用更低的,超低密度集成电路所需的更薄的二氧化硅栅介质层。 为了消除体硅缺陷引起的缺陷,在场氧化工艺中用于掩蔽的氮化硅岛下方的氧化硅层之后的有源区上形成原位生长的外延层。 通过在栅介质层形成之前生长外延硅层,将体硅衬底中的缺陷覆盖并因此从氧化物生长步骤中分离。 为了保持选择性外延生长步骤的完整性,将晶片保持在受控的无氧环境中,直到外延生长步骤完成。 为了消除由自然氧化物层引起的缺陷,将晶片保持在受控制的无氧环境中,直到在受控的氧化环境中经历升高的温度。 在一个实施方案中,氧化环境包括双原子氧,而在另一个实施方案中,氧化环境包括双原子氧和臭氧。

    SEMICONDUCTOR DEVICE AND METHOD OF PRODUCING THE SAME
    9.
    发明申请
    SEMICONDUCTOR DEVICE AND METHOD OF PRODUCING THE SAME 审中-公开
    半导体器件及其制造方法

    公开(公告)号:WO1991001569A1

    公开(公告)日:1991-02-07

    申请号:PCT/JP1990000889

    申请日:1990-07-11

    Abstract: An insulated gate field-effect transistor used as a switching element in computers and a method of producing the same. In order to improve dynamic characteristics of the transistor by decreasing the junction capacitance between a substrate (1) and a source (7) or a drain (8), an insulating layer (2) is provided under the source region and the drain region. In order to decrease the drop of carrier mobility and to suppress the short channel effect, furthermore, the impurity concentration is lowered on the surface side of the semiconductor layer just under the gate and is heightened on the side of the substrate.

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