Doped polysilicon to retard boron diffusion into and through thin gate
dielectrics
    1.
    发明授权
    Doped polysilicon to retard boron diffusion into and through thin gate dielectrics 失效
    掺杂的多晶硅以阻止硼扩散进入并通过薄栅极电介质

    公开(公告)号:US6030874A

    公开(公告)日:2000-02-29

    申请号:US7060

    申请日:1998-01-13

    摘要: An embodiment of the instant invention is a method of fabricating a semiconductor device which includes a dielectric layer situated between a conductive structure and a semiconductor substrate, the method comprising the steps of: forming the dielectric layer (layer 14) on the semiconductor substrate (substrate 12); forming the conductive structure (structure 18) on the dielectric layer; doping the conductive structure with boron; and doping the conductive structure with a dopant which inhibits the diffusion of boron. The semiconductor device may be a PMOS transistor or a capacitor. Preferably, the conductive structure is a gate structure. The dielectric layer is, preferably, comprised of a material selected from the group consisting of: an oxide, an oxide/oxide stack, an oxide/nitride stack, and an oxynitride. Preferably, the dopant which inhibits the diffusion of boron comprises at least one group III or group IV element. More specifically, it is preferably comprised of: carbon, germanium, and any combination thereof. Preferably, the steps of doping the conductive structure with boron and doping the conductive structure with a dopant which inhibits the diffusion of boron are accomplished substantially simultaneously, or the step of doping the conductive structure with boron is preformed prior to the step of doping the conductive structure with a dopant which inhibits the diffusion of boron are accomplished substantially simultaneously.

    摘要翻译: 本发明的实施例是一种制造半导体器件的方法,该半导体器件包括位于导电结构和半导体衬底之间的电介质层,该方法包括以下步骤:在半导体衬底(衬底)上形成介电层(层14) 12); 在电介质层上形成导电结构(结构18); 用硼掺杂导电结构; 并用抑制硼扩散的掺杂​​剂掺杂导电结构。 半导体器件可以是PMOS晶体管或电容器。 优选地,导电结构是栅极结构。 电介质层优选由选自氧化物,氧化物/氧化物堆,氧化物/氮化物叠层和氧氮化物的材料组成。 优选地,抑制硼扩散的掺杂​​剂包含至少一个III族或IV族元素。 更具体地,其优选包括:碳,锗及其任何组合。 优选地,用硼掺杂导电结构并用抑制硼的扩散的掺杂​​剂掺杂导电结构的步骤基本上同时实现,或者在掺杂导电的步骤之前预先形成用硼掺杂导电结构的步骤 具有抑制硼扩散的掺杂​​剂的结构基本上同时完成。

    Silicided undoped polysilicon for capacitor bottom plate
    2.
    发明授权
    Silicided undoped polysilicon for capacitor bottom plate 有权
    用于电容器底板的硅化无掺杂多晶硅

    公开(公告)号:US06380609B1

    公开(公告)日:2002-04-30

    申请号:US09661717

    申请日:2000-09-14

    IPC分类号: H01L2900

    摘要: A capacitor (110) having a bottom plate (104) that comprises undoped polysilicon (106) which has been silicided (108). An advantage of the invention is providing a capacitor (110) having reduced parasitic capacitance to the substrate (100) and reduced sheet resistance of the bottom plate (104).

    摘要翻译: 具有底板(104)的电容器(110)包括已被硅化的未掺杂多晶硅(106)(108)。 本发明的一个优点是提供一种具有减小的对基板(100)的寄生电容并降低底板(104)的薄层电阻的电容器(110)。

    Methods for Transistor Formation Using Selective Gate Implantation
    3.
    发明申请
    Methods for Transistor Formation Using Selective Gate Implantation 有权
    使用选择性栅植入的晶体管形成方法

    公开(公告)号:US20060270140A1

    公开(公告)日:2006-11-30

    申请号:US11462541

    申请日:2006-08-04

    IPC分类号: H01L21/8238

    摘要: Methods are disclosed for semiconductor device fabrication in which dopants are selectively implanted into transistor gate structures to counteract or compensate for dopant depletion during subsequent fabrication processing. A patterned implant mask is formed over a semiconductor device, which exposes at least a portion of the gate structure and covers the remaining upper surfaces of the device. Thereafter, dopants are selectively implanted in to the exposed gate structure.

    摘要翻译: 公开了用于半导体器件制造的方法,其中将掺杂剂选择性地注入到晶体管栅极结构中以抵消或补偿在随后的制造处理期间的掺杂剂耗尽。 图案化的注入掩模形成在半导体器件上,其暴露栅极结构的至少一部分并且覆盖器件的剩余上表面。 此后,将掺杂剂选择性地植入到暴露的栅极结构中。

    Silicided undoped polysilicon for capacitor bottom plate
    5.
    发明授权
    Silicided undoped polysilicon for capacitor bottom plate 有权
    用于电容器底板的硅化无掺杂多晶硅

    公开(公告)号:US06620700B2

    公开(公告)日:2003-09-16

    申请号:US10102416

    申请日:2002-03-20

    IPC分类号: H01L218242

    摘要: A capacitor (110) having a bottom plate (104) that includes undoped polysilicon (106) which has been silicided (108). An advantage of the invention is providing a capacitor (110) having reduced parasitic capacitance to the substrate (100) and reduced sheet resistance of the bottom plate (104).

    摘要翻译: 具有底板(104)的电容器(110)包括已被硅化的未掺杂多晶硅(106)(108)。 本发明的一个优点是提供一种具有减小的对基板(100)的寄生电容并降低底板(104)的薄层电阻的电容器(110)。

    Reduced resistance base contact for single polysilicon bipolar
transistors using extrinsic base diffusion from a diffusion source
dielectric layer
    7.
    发明授权
    Reduced resistance base contact for single polysilicon bipolar transistors using extrinsic base diffusion from a diffusion source dielectric layer 失效
    使用来自扩散源电介质层的外部基极扩散来降低单晶硅双极晶体管的电阻基极接触

    公开(公告)号:US6028345A

    公开(公告)日:2000-02-22

    申请号:US486910

    申请日:1995-06-07

    申请人: F. Scott Johnson

    发明人: F. Scott Johnson

    摘要: A bipolar transistor (100) and a method for forming the same. A diffusion source dielectric layer (118) is deposited over a semiconductor body (101). An emitter window (116) is then etched through the diffusion source dielectric layer (118). An extrinsic base region (110) is diffused from the diffusion source dielectric layer (118). The intrinsic base region (108) is then implanted. Base-emitter spacers (120) are then formed followed by the emitter electrode (124) and emitter region (126). The extrinsic base region (110) is self-aligned to the emitter eliminating the alignment tolerances for the lateral diffusion of the extrinsic base implant and an extrinsic base implant.

    摘要翻译: 双极晶体管(100)及其形成方法。 扩散源电介质层(118)沉积在半导体本体(101)上。 然后通过扩散源电介质层(118)蚀刻发射器窗口(116)。 外部基极区域(110)从扩散源电介质层(118)扩散。 然后植入本征基区(108)。 然后形成基极 - 发射极间隔物(120),随后是发射极(124)和发射极区(126)。 外部基极区域(110)与发射极自对准,消除了外部基极植入物和外部基极植入物的横向扩散的对准公差。

    High speed bipolar transistor using a patterned etch stop and diffusion
source

    公开(公告)号:US5629556A

    公开(公告)日:1997-05-13

    申请号:US486431

    申请日:1995-06-07

    申请人: F. Scott Johnson

    发明人: F. Scott Johnson

    CPC分类号: H01L29/66272 H01L29/7322

    摘要: A bipolar transistor (100) and a method for forming the same. A base-link diffusion source layer (118) is formed over a portion of the collector region (102). The base-link diffusion source layer (118) comprises a material that is capable of being used as a dopant source and is capable of being etched selectively with respect to silicon. A base electrode (114) is formed over at least one end portion of the base-link diffusion source layer (118) and the exposed portions of the base-link diffusion source layer (118) are removed. An extrinsic base region (110) is diffused from the base electrode (114) and a base link-up region (112) is diffused from the base-link diffusion source layer (118). Processing may then continue to form an intrinsic base region (108), emitter region (126), and emitter electrode (124).

    Stacked barrier-diffusion source and etch stop for double polysilicon
BJT with patterned base link
    9.
    发明授权
    Stacked barrier-diffusion source and etch stop for double polysilicon BJT with patterned base link 失效
    堆叠的阻挡扩散源和具有图案化基极连接的双重多晶硅BJT的蚀刻停止

    公开(公告)号:US5502330A

    公开(公告)日:1996-03-26

    申请号:US473865

    申请日:1995-06-07

    摘要: A bipolar transistor (100) and a method for forming the same. A base-link diffusion source layer (118) is formed over a portion of the collector region (102). The base-link diffusion source layer (118) comprises a material that is capable of being used as a dopant source and is capable of being etched selectively with respect to silicon. A barrier layer (119) is formed over the base-link diffusion source layer (118). A base electrode (114) is formed over at least one end portion of the barrier layer (119) and base-link diffusion source layer (118) and the exposed portions of the barrier layer (119) and underlying base-link diffusion source layer (118) are removed. An extrinsic base region (110) is diffused from the base electrode (114) and a base link-up region (112) is diffused from the base-link diffusion source layer (118). Processing may then continue to form an intrinsic base region (108), emitter region (126), and emitter electrode (124).

    摘要翻译: 双极晶体管(100)及其形成方法。 在集电极区域(102)的一部分上形成基极 - 链路扩散源层(118)。 基极 - 链路扩散源层(118)包括能够用作掺杂剂源并且能够相对于硅选择性蚀刻的材料。 在基极 - 链路扩散源层(118)之上形成阻挡层(119)。 基底电极(114)形成在阻挡层(119)和基极 - 链路扩散源层(118)的至少一个端部和阻挡层(119)的暴露部分和下面的基底 - 链路扩散源层 (118)被去除。 外部基极区域(110)从基极(114)扩散,基极连接区域(112)从基极扩散源层(118)扩散。 然后,处理可以继续形成本征基极区域(108),发射极区域(126)和发射极电极(124)。

    Methods for transistor formation using selective gate implantation
    10.
    发明授权
    Methods for transistor formation using selective gate implantation 有权
    使用选择性栅极注入的晶体管形成方法

    公开(公告)号:US07572693B2

    公开(公告)日:2009-08-11

    申请号:US11462541

    申请日:2006-08-04

    摘要: Methods are disclosed for semiconductor device fabrication in which dopants are selectively implanted into transistor gate structures to counteract or compensate for dopant depletion during subsequent fabrication processing. A patterned implant mask is formed over a semiconductor device, which exposes at least a portion of the gate structure and covers the remaining upper surfaces of the device. Thereafter, dopants are selectively implanted in to the exposed gate structure.

    摘要翻译: 公开了用于半导体器件制造的方法,其中将掺杂剂选择性地注入到晶体管栅极结构中以抵消或补偿在随后的制造处理期间的掺杂剂耗尽。 图案化的注入掩模形成在半导体器件上,其暴露栅极结构的至少一部分并且覆盖器件的剩余上表面。 此后,将掺杂剂选择性地植入到暴露的栅极结构中。