沟槽型场效应晶体管结构及其制备方法

    公开(公告)号:WO2021068420A1

    公开(公告)日:2021-04-15

    申请号:PCT/CN2019/130503

    申请日:2019-12-31

    Abstract: 本发明提供一种沟槽型场效应晶体管结构及其制备方法,制备方法包括:提供衬底(100),形成外延层;形成若干个器件沟槽(102),于器件沟槽(102)的内壁形成第一屏蔽介质层(106)及第一屏蔽栅层(105),第一屏蔽介质层(106)的上表面低于第一屏蔽栅层(105)的上表面,形成第二屏蔽介质层(110)及第二屏蔽栅层(109);形成第三屏蔽介质层(111),形成栅介质层(112)及栅极层(113);形成体区(114),源极(115);以及上金属结构(118)和下金属结构(119)。本发明基于第一屏蔽栅层(105)及第二屏蔽栅层(109)的设置,可以提高漂移区(外延层)的掺杂浓度,并优化了器件沟槽表面纵向电场分布,可以解决现有技术中器件击穿时沟槽表面纵向电场呈两个峰值的悬挂式分布,电场峰值之间电场下降严重问题,从而进一步改善了器件击穿电压和特征导通电阻的矛盾关系。

    INTEGRATION OF GRAPHENE AND BORON NITRIDE HETERO-STRUCTURE DEVICE OVER SEMICONDUCTOR LAYER

    公开(公告)号:WO2019169392A8

    公开(公告)日:2019-09-06

    申请号:PCT/US2019/020558

    申请日:2019-03-04

    Abstract: A microelectronic device (100) includes a gated graphene component (102) over a semiconductor material (106). The gated graphene component (102) includes a graphitic layer (126) having at least one layer of graphene. The graphitic layer (126) has a channel region (128). A first connection (134) and a second connection (136) make electrical connections to the graphitic layer (126) adjacent to the channel region (128). The graphitic layer (126) is isolated from the semiconductor material (106). A backgate region (142) having a first conductivity type is disposed in the semiconductor material (106) under the channel region (128). A first contact field region (144) and a second contact field region (146) are disposed in the semiconductor material (106) under the first connection (134) and the second connection (136), respectively. At least one of the first contact field region (144) and the second contact field region (146) has a second, opposite, conductivity type.

    BIPOLAR JUNCTION TRANSISTORS WITH REDUCED BASE-COLLECTOR JUNCTION CAPACITANCE
    4.
    发明申请
    BIPOLAR JUNCTION TRANSISTORS WITH REDUCED BASE-COLLECTOR JUNCTION CAPACITANCE 审中-公开
    具有降低的基极集电极结电容的双极晶体管

    公开(公告)号:WO2013158421A1

    公开(公告)日:2013-10-24

    申请号:PCT/US2013/035871

    申请日:2013-04-10

    CPC classification number: H01L29/66287 H01L29/0649 H01L29/0804 H01L29/7325

    Abstract: Methods for fabricating a device structure such as a bipolar junction transistor (80), device structures for a bipolar junction transistor, and design structures for a bipolar junction transistor. The device structure includes a collector region (18) formed in a substrate (10), an intrinsic base (84) coextensive with the collector region, an emitter (74) coupled with the intrinsic base, a first isolation region (12) surrounding the collector region, and a second isolation region (42, 43) formed at least partially within the collector region. The first isolation region has a first sidewall (13) and the second isolation region having a second sidewall (51a, 53a) peripherally inside the first sidewall. A portion (37, 39) of the collector region is disposed between the first sidewall of the first isolation region and the second sidewall of the second isolation region.

    Abstract translation: 用于制造诸如双极结晶体管(80)的器件结构的方法,用于双极结型晶体管的器件结构以及用于双极结型晶体管的设计结构。 器件结构包括形成在衬底(10)中的集电极区(18),与集电极区共同延伸的本征基极(84),与本征基极耦合的发射极(74),围绕着 集电极区域,以及至少部分地形成在集电极区域内的第二隔离区域(42,43)。 第一隔离区域具有第一侧壁(13),第二隔离区域在第一侧壁内部具有第二侧壁(51a,53a)。 集电区域的一部分(37,39)设置在第一隔离区的第一侧壁和第二隔离区的第二侧壁之间。

    SEMICONDUCTOR DEVICE WITH MINIMAL PATTERN DISTORTION AND PROCESSES FOR FABRICATING SEMICONDUCTOR DEVICES THEREOF
    5.
    发明申请
    SEMICONDUCTOR DEVICE WITH MINIMAL PATTERN DISTORTION AND PROCESSES FOR FABRICATING SEMICONDUCTOR DEVICES THEREOF 审中-公开
    具有最小图案失真的半导体器件及其制造半导体器件的工艺

    公开(公告)号:WO2012070926A1

    公开(公告)日:2012-05-31

    申请号:PCT/MY2011/000080

    申请日:2011-06-06

    Abstract: A novel semiconductor device (200) with less pattern distortion and novel processes for fabricating the same are disclosed. The novel method includes selecting a first substrate (211), forming a photo resist (212) above the first substrate (211) and selectively etching it to expose an opening to the first substrate (211). Dopant ions such as Arsenic are implanted on the first substrate (211), the said implanting step defining a buried layer profile (214) and implanting the ions on the substrate (211). The ions are activated in a thermal drive-in process, wherein the said activation process activates the ion and forms a thick silicon oxide layer (213) above the substrate (211) and buried layer profile (214). Excess upper portion of the silicon oxide layer (213) is removed. A second epitaxial layer (216) may be formed above the buried layer profile (214) and first substrate (211) and a wafer mark (217) etched on the second epitaxial layer (216).

    Abstract translation: 公开了一种具有较少图案失真的新型半导体器件(200)及其制造方法。 新颖的方法包括选择第一衬底(211),在第一衬底(211)上方形成光致抗蚀剂(212),并选择性地刻蚀第一衬底以露出第一衬底(211)的开口。 掺杂离子如砷被注入到第一衬底(211)上,所述注入步骤限定掩埋层轮廓(214)并将离子注入到衬底(211)上。 离子在热驱动过程中被激活,其中所述激活过程激活离子并在衬底(211)和掩埋层轮廓(214)之上形成厚的氧化硅层(213)。 除去氧化硅层(213)的过多的上部。 可以在掩埋层轮廓(214)和第一衬底(211)之上形成第二外延层(216)和蚀刻在第二外延层(216)上的晶片标记(217)。

    LOW TEMPERATURE IMPLANT TO IMPROVE BJT CURRENT GAIN
    6.
    发明申请
    LOW TEMPERATURE IMPLANT TO IMPROVE BJT CURRENT GAIN 审中-公开
    低温注入以改善双极晶体管电流增益

    公开(公告)号:WO2012061130A2

    公开(公告)日:2012-05-10

    申请号:PCT/US2011057679

    申请日:2011-10-25

    Inventor: CHUANG MING-YEH

    CPC classification number: H01L21/26593 H01L21/8249 H01L27/0623 H01L29/66272

    Abstract: A process of forming an integrated circuit containing a bipolar junction transistor (BJT) (1002) and a metal oxide semiconductor (MOS) (1004) transistor by cooling the integrated circuit substrate to 5 °C or colder and concurrently implanting dopants, at a specified minimum dose according to species, into the emitter region of the BJT and into the source and drain regions of the MOS transistor.

    Abstract translation: (BJT)(1002)和金属氧化物半导体(MOS)(1004)晶体管的集成电路通过将集成电路衬底冷却到5℃或更冷并同时注入掺杂剂而形成集成电路的过程, 根据物种的最小剂量进入BJT的发射极区域并进入MOS晶体管的源极和漏极区域。

    齐纳二极管及其制作方法
    7.
    发明申请

    公开(公告)号:WO2023273320A1

    公开(公告)日:2023-01-05

    申请号:PCT/CN2022/073069

    申请日:2022-01-21

    Abstract: 一种齐纳二极管及其制作方法,包括:于衬底(101)上形成电场阻挡层(102);于衬底(101)上形成图形掩膜,图形掩膜具有显露部分电场阻挡层的第一窗口(106);去除第一窗口(106)内的电场阻挡层(102);于衬底(101)中形成第一导电类型掺杂区(107)及第二导电类型掺杂区(108);于第一窗口(106)的侧壁形成侧墙结构(110),以将第一窗口(106)限制为第二窗口(111);基于第二窗口(111)进行第一导电类型离子注入,以在第一导电类型掺杂区(107)与第二导电类型掺杂区(108)之间自对准形成第一导电类型连接区(112),其中,第一导电类型连接区(112)的掺杂浓度大于第一导电类型掺杂区(107)的掺杂浓度。

    绝缘栅双极型晶体管的制造方法
    8.
    发明申请

    公开(公告)号:WO2015014289A1

    公开(公告)日:2015-02-05

    申请号:PCT/CN2014/083345

    申请日:2014-07-30

    CPC classification number: H01L29/7395 H01L29/0619 H01L29/66333

    Abstract: 一种绝缘栅双极型晶体管的制造方法,包括,提供第一导电类型的半导体衬底(101),该半导体衬底(101)具有第一主面和第二主面;在第一导电类型的半导体衬底(101)进行有源区(100)光刻以及第一导电类型的离子注入;在第一导电类型的半导体衬底(101)的具有有源区(100)的第一主面形成第二导电类型的基区(301,302)以及在具有有源区(100)的第一主面外侧形成第二导电类型的保护终端(200);在该半导体衬底(101)的第一主面基于形成的基区(301,302)形成绝缘栅双极型晶体管的剩余第一主面结构;在该半导体衬底(101)的第二主面侧形成绝缘栅双极型晶体管的第二主面结构。该IGBT制作方法降低了光刻版使用数量,工艺流程简单,制造成本降低且应用可靠性高。

    A SCHOTTKY BARRIER DIODE, A METHOD OF FORMING THE DIODE AND A DESIGN STRUCTURE FOR THE DIODE
    10.
    发明申请
    A SCHOTTKY BARRIER DIODE, A METHOD OF FORMING THE DIODE AND A DESIGN STRUCTURE FOR THE DIODE 审中-公开
    肖特基二极管二极管,形成二极管的方法和二极管的设计结构

    公开(公告)号:WO2012106101A3

    公开(公告)日:2012-10-26

    申请号:PCT/US2012021483

    申请日:2012-01-17

    CPC classification number: H01L29/66143 G06F17/5068 H01L29/872

    Abstract: Disclosed are embodiments of a Schottky barrier diode (100). This Schottky barrier diode can be formed in a semiconductor substrate (101) having a doped region (110) with a first conductivity type. A trench isolation structure (120) can laterally surround a section (111) of the doped region at the top surface (102) of the substrate. A semiconductor layer (150) can be positioned on the top surface of the substrate. This semiconductor layer can have a Schottky barrier portion (151) over the defined section (111) of the doped region and a guardring portion (152) over the trench isolation structure laterally surrounding the Schottky barrier portion. The Schottky barrier portion can have the first conductivity type and the guarding portion can have a second conductivity type different from the first conductivity type. A metal silicide layer (140) can overlie the semiconductor layer. Also disclosed are embodiments of a method of forming this Schottky barrier diode and of a design structure for the Schottky barrier diode.

    Abstract translation: 公开了肖特基势垒二极管(100)的实施例。 该肖特基势垒二极管可以形成在具有第一导电类型的掺杂区域(110)的半导体衬底(101)中。 沟槽隔离结构(120)可横向地围绕衬底的顶表面(102)处的掺杂区域的部分(111)。 半导体层(150)可以位于衬底的顶表面上。 该半导体层可以在掺杂区域的限定部分(111)上方具有肖特基势垒部分(151),并且在沟槽隔离结构之上的护套部分(152)横向围绕肖特基势垒部分。 肖特基势垒部分可以具有第一导电类型,并且保护部分可以具有不同于第一导电类型的第二导电类型。 金属硅化物层(140)可以覆盖半导体层。 还公开了形成该肖特基势垒二极管的方法和肖特基势垒二极管的设计结构的实施例。

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