Methods of producing bipolar transistors having emitter-base junctions of varying depths and/or doping concentrations
    7.
    发明授权
    Methods of producing bipolar transistors having emitter-base junctions of varying depths and/or doping concentrations 有权
    制造具有不同深度和/或掺杂浓度的发射极 - 基结的双极型晶体管的方法

    公开(公告)号:US09281375B2

    公开(公告)日:2016-03-08

    申请号:US14313114

    申请日:2014-06-24

    摘要: Methods for producing bipolar transistors are provided. In one embodiment, the method includes producing a bipolar transistor including first and second connected emitter-base (EB) junctions of varying different depths. A buried layer (BL) collector is further produced to have a third depth greater than the depths of the EB junctions. The emitters and bases corresponding to the different EB junctions are provided during a chain implant. An isolation region may overlie the second EB junction location. The BL collector is laterally spaced from the first EB junction by a variable amount to facilitate adjustment of the transistor properties. The BL collector may or may not underlie at least a portion of the second EB junction. Regions of opposite conductivity type overlie and underlie the BL collector to preserve breakdown voltage. The transistor can be readily “tuned” by mask adjustments alone to meet various device requirements.

    摘要翻译: 提供了制造双极晶体管的方法。 在一个实施例中,该方法包括产生包括变化不同深度的第一和第二连接的发射极基极(EB)结的双极晶体管。 进一步制造掩埋层(BL)集电体以具有大于EB结的深度的第三深度。 在链植入期间提供对应于不同EB结的发射器和基座。 隔离区域可以覆盖第二EB结点位置。 BL收集器与第一EB结横向间隔可变量以便于调整晶体管特性。 BL收集器可以或可以不位于第二EB结的至少一部分的下面。 相反导电类型的区域叠加在BL集电极之下,以保持击穿电压。 晶体管可以通过单独的掩模调节容易地“调谐”以满足各种器件要求。

    Fabrication of self aligned base contacts for bipolar transistors
    9.
    发明授权
    Fabrication of self aligned base contacts for bipolar transistors 有权
    双极晶体管自对准基极接触的制作

    公开(公告)号:US09099397B1

    公开(公告)日:2015-08-04

    申请号:US13427097

    申请日:2012-03-22

    申请人: James Chingwei Li

    发明人: James Chingwei Li

    摘要: A transistor includes a first emitter layer area, a second emitter layer area, wherein the second emitter layer area is separate from the first emitter layer area, a first metal formed on the first emitter layer area, a second metal formed on the second emitter layer area, a base, and a base metal formed on the base and on the second metal. The first emitter layer area is an emitter of the transistor and the first metal provides an emitter contact. The base metal on the base and on the second metal provides a base contact.

    摘要翻译: 晶体管包括第一发射极层区域,第二发射极层区域,其中第二发射极层区域与第一发射极层区域分离,形成在第一发射极层区域上的第一金属,形成在第二发射极层上的第二金属 区域,基部和形成在基部和第二金属上的基底金属。 第一发射极层区域是晶体管的发射极,第一金属提供发射极接触。 底座上的第二金属和第二金属上的母材提供了底座接触。

    Method for providing semiconductors having self-aligned ion implant
    10.
    发明授权
    Method for providing semiconductors having self-aligned ion implant 有权
    提供具有自对准离子植入物的半导体的方法

    公开(公告)号:US08841698B2

    公开(公告)日:2014-09-23

    申请号:US13078510

    申请日:2011-04-01

    申请人: Philip G. Neudeck

    发明人: Philip G. Neudeck

    摘要: A method is disclosed that provides a self-aligned nitrogen-implant particularly suited for a Junction Field Effect Transistor (JFET) semiconductor device preferably comprised of a silicon carbide (SiC). This self-aligned nitrogen-implant allows for the realization of durable and stable electrical functionality of high temperature transistors such as JFETs. The method implements the self-aligned nitrogen-implant having predetermined dimensions, at a particular step in the fabrication process, so that the SiC junction field effect transistors are capable of being electrically operating continuously at 500° C. for over 10,000 hours in an air ambient with less than a 10% change in operational transistor parameters.

    摘要翻译: 公开了一种提供特别适合于优选由碳化硅(SiC)构成的结型场效应晶体管(JFET)半导体器件的自对准氮注入的方法。 这种自对准氮 - 注入允许实现高温晶体管(例如JFET)的耐用且稳定的电功能。 该方法在制造过程的特定步骤中实现具有预定尺寸的自对准氮注入,使得SiC结场效应晶体管能够在500℃下连续电连续工作,在空气中超过10,000小时 环境中运行晶体管参数的变化小于10%。