Non-volatile random access memory cell constructed of silicon carbide
    1.
    发明授权
    Non-volatile random access memory cell constructed of silicon carbide 失效
    由碳化硅构成的非易失性随机存取存储单元

    公开(公告)号:US5510630A

    公开(公告)日:1996-04-23

    申请号:US138908

    申请日:1993-10-18

    摘要: A non-volatile random access memory (NVRAM) cell that utilizes a simple, single-transistor DRAM cell configuration. The present NVRAM employs an enhancement mode nMOS transistor made as an accumulation mode transistor. The transistor has an n-type silicon carbide channel layer on a p-type silicon carbide buffer layer, with the channel and buffer layers being on a highly resistive silicon carbide substrate. The transistor also has n+ source and drain contact regions on the channel layer. A polysilicon/oxide/metal capacitor is preferably used which has a very low leakage current. Furthermore, this type of capacitor can be stacked on top of the transistor to save area and achieve high cell density. It is preferred to use a non-reentrant (edgeless) gate transistor structure to further reduce edge effects.

    摘要翻译: 利用简单的单晶体管DRAM单元配置的非易失性随机存取存储器(NVRAM)单元。 目前的NVRAM采用了作为累积模式晶体管制成的增强型nMOS晶体管。 晶体管在p型碳化硅缓冲层上具有n型碳化硅沟道层,其中沟道和缓冲层位于高电阻碳化硅衬底上。 晶体管还在沟道层上具有n +源极和漏极接触区域。 优选使用具有非常低的漏电流的多晶硅/氧化物/金属电容器。 此外,这种类型的电容器可以堆叠在晶体管的顶部以节省面积并实现高电池密度。 优选使用不可重入(无边缘)栅极晶体管结构来进一步减少边缘效应。

    Field effect transistor and fabricating method thereof
    4.
    发明授权
    Field effect transistor and fabricating method thereof 失效
    场效应晶体管及其制造方法

    公开(公告)号:US5397907A

    公开(公告)日:1995-03-14

    申请号:US223781

    申请日:1994-04-06

    申请人: Yong H. Lee

    发明人: Yong H. Lee

    摘要: A MESFET which includes a semi-insulating substrate, e.g., a GaAs substrate, an insulating layer formed on a portion of the upper surface of the substrate, a first semiconductor layer formed on the upper surface of the substrate adjacent to opposite sides of the insulating layer, the first semiconductor layer having sidewalls defining a void therein, a nitride layer formed on a portion of the upper surface of the insulating layer, an oxide layer formed on the nitride layer, a second semiconductor layer formed on the sidewalls of the first semiconductor layer and in covering relationship to the void, a gate electrode formed on at least a portion of the upper surface of the second semiconductor layer, and, source and drain electrodes formed on the upper surface of the first semiconductor layer, on opposite sides of the gate electrode.

    摘要翻译: 一种MESFET,其包括半绝缘衬底,例如GaAs衬底,形成在衬底的上表面的一部分上的绝缘层;第一半导体层,形成在衬底的上表面上,与绝缘体的相对侧相邻 层,其中具有限定空隙的第一半导体层,形成在绝缘层的上表面的一部分上的氮化物层,形成在氮化物层上的氧化物层,形成在第一半导体的侧壁上的第二半导体层 层,并且覆盖与空隙的关系,形成在第二半导体层的上表面的至少一部分上的栅电极以及形成在第一半导体层的上表面上的源电极和漏电极, 栅电极。

    Semiconductor device
    6.
    发明授权
    Semiconductor device 失效
    半导体器件

    公开(公告)号:US5389799A

    公开(公告)日:1995-02-14

    申请号:US74541

    申请日:1993-06-11

    申请人: Tsutomu Uemoto

    发明人: Tsutomu Uemoto

    摘要: Disclosed is a semiconductor device such as a light emitting diode, a MOS transistor, a Schottky diode, and CCD. The semiconductor device comprises a SiC layer of a first conductivity type and another SiC layer of a second conductivity type. At least one of the SiC layers of the first and second conductivity types is doped with at least one element selected from the group consisting of Cr, Mo and W.

    摘要翻译: 公开了诸如发光二极管,MOS晶体管,肖特基二极管和CCD的半导体器件。 半导体器件包括第一导电类型的SiC层和第二导电类型的另一SiC层。 第一和第二导电类型的至少一个SiC层掺杂有选自Cr,Mo和W中的至少一种元素。

    Surge protection device
    7.
    发明授权
    Surge protection device 失效
    浪涌保护装置

    公开(公告)号:US5376809A

    公开(公告)日:1994-12-27

    申请号:US192305

    申请日:1994-02-04

    CPC分类号: H01L29/87

    摘要: A surge protection device for absorbing surges of either polarity has a second region forming a first pn junction with a first region, a third region capable of injecting first minority carriers into the second region, a fourth region forming a second pn junction with the first region and a fifth region capable of injecting second minority carriers into the fourth region. The surfaces of the fourth region and the fifth region and a first Schottky junction with respect to the first region are in mutual electrical connection with a first ohmic electrode, while the surfaces of the second region and the third region and a second Schottky junction with respect to the first region are in mutual electrical connection with a second ohmic electrode. During the initial stage when a surge voltage applied across the first and second electrodes is in a transient rising state, the dV/dt immunity is increased by majority carrier current flowing into the first region through the Schottky junction forward biased owing to the surge polarity and charging the junction capacitance of the reverse biased pn junction.

    摘要翻译: 用于吸收任一极性的浪涌的浪涌保护装置具有形成与第一区域的第一pn结的第二区域,能够将第一少数载流子注入第二区域的第三区域,与第一区域形成第二pn结的第四区域 以及能够将第二少数载体注入第四区域的第五区域。 第四区域和第五区域的表面和相对于第一区域的第一肖特基结与第一欧姆电极相互电连接,而第二区域和第三区域的表面和第二肖特基结的相对于 到第一区域与第二欧姆电极相互电连接。 在施加在第一和第二电极两端的浪涌电压处于瞬态上升状态的初始阶段,由于浪涌极性,通过肖特基结正向偏置流入第一区域的多数载流子电流使得dV / dt抗扰度增加, 充电反向偏置pn结的结电容。

    Amorphous silicon rectifying contact on diamond and method for making
same
    9.
    发明授权
    Amorphous silicon rectifying contact on diamond and method for making same 失效
    金刚石上的非晶硅整流接触及其制作方法

    公开(公告)号:US5371382A

    公开(公告)日:1994-12-06

    申请号:US874637

    申请日:1992-04-27

    摘要: A rectifying contact for use at high temperatures includes a semiconducting diamond layer and a doped amorphous silicon layer thereon. The amorphous silicon layer may be doped with either a p-type or n-type dopant. The semiconducting diamond may be a doped polycrystalline diamond layer or a natural IIb single crystal diamond. The amorphous silicon layer may be formed by sputter deposition from doped silicon targets. A subsequent heating of the thus formed rectifying contact lowers the forward resistance of the contact by activating additional dopant atoms within the amorphous silicon layer.

    摘要翻译: 在高温下使用的整流接触件包括半导体金刚石层和其上的掺杂非晶硅层。 非晶硅层可以掺杂有p型或n型掺杂剂。 半导体金刚石可以是掺杂多晶金刚石层或天然IIb单晶金刚石。 可以通过从掺杂的硅靶的溅射沉积形成非晶硅层。 由此形成的整流接触的随后的加热通过激活非晶硅层内的附加掺杂剂原子来降低接触的正向电阻。

    Diamond Schottky diode with oxygen
    10.
    发明授权
    Diamond Schottky diode with oxygen 失效
    金刚石肖特基二极管与氧气

    公开(公告)号:US5352908A

    公开(公告)日:1994-10-04

    申请号:US145307

    申请日:1993-11-03

    CPC分类号: H01L29/1602 H01L29/872

    摘要: A diamond Schottky diode including an electrically conductive substrate, a multi-layer structure of a semiconducting diamond layer and an insulating diamond layer, and a metal electrode. This diode has a greater potential barrier under a reversed bias and hence exhibits better rectifying characteristics with a smaller reverse current.

    摘要翻译: 包括导电衬底,半导体金刚石层和绝缘金刚石层的多层结构的金刚石肖特基二极管和金属电极。 该二极管在反向偏置下具有更大的势垒,因此具有较小的反向电流的整流特性。