TRANSISTOR HAVING PARTIALLY OR WHOLLY REPLACED SUBSTRATE AND METHOD OF MAKING THE SAME
    4.
    发明申请
    TRANSISTOR HAVING PARTIALLY OR WHOLLY REPLACED SUBSTRATE AND METHOD OF MAKING THE SAME 审中-公开
    具有部分或完全替换基板的晶体管及其制造方法

    公开(公告)号:US20150021666A1

    公开(公告)日:2015-01-22

    申请号:US13944779

    申请日:2013-07-17

    IPC分类号: H01L29/778 H01L29/66

    摘要: A transistor includes a substrate, a channel layer over the substrate, an active structure over the channel layer, a gate electrode over the channel layer, and a drain electrode over the channel layer. The active structure is configured to cause a two dimensional electron gas (2DEG) to be formed in the channel layer along an interface between the channel layer and the active structure. The gate electrode and the drain electrode define a first space therebetween. The substrate has a first portion directly under the first space defined between the gate electrode and the drain electrode, and the first portion has a first electrical conductivity value less than that of intrinsic silicon and a thermal conductivity value greater than that of intrinsic silicon.

    摘要翻译: 晶体管包括衬底,衬底上的沟道层,沟道层上的有源结构,沟道层上的栅电极以及沟道层上的漏电极。 活性结构被配置成沿沟道层和活性结构之间的界面在沟道层中形成二维电子气(2DEG)。 栅电极和漏电极在它们之间限定第一空间。 衬底具有直接位于栅电极和漏电极之间的第一空间下的第一部分,并且第一部分具有小于本征硅的第一电导率值和大于本征硅的热导率值。

    LASER RECOVERY OF A CORE LAYER OF A TEMPORARY CARRIER STRUCTURE

    公开(公告)号:US20240332396A1

    公开(公告)日:2024-10-03

    申请号:US18194199

    申请日:2023-03-31

    IPC分类号: H01L29/66 B32B43/00

    摘要: Some implementations described herein provide a temporary carrier structure and techniques to form a semiconductor device on the temporary carrier structure. The temporary carrier structure includes a core layer formed from a material having a first bandgap lattice constant. The temporary carrier structure further includes a debonding layer formed from another material having a second bandgap energy constant that is lesser relative to the first bandgap lattice constant. Techniques to form the semiconductor device including a forming substrate layer of the semiconductor device on the temporary carrier structure, where a material of the substrate layer and the material of the core layer have a same approximate coefficient of thermal expansion. The techniques further include providing energy (e.g., electromagnetic waves from a laser source) to the debonding layer to remove the core layer from the temporary carrier structure.

    TRANSISTOR HAVING A BACK-BARRIER LAYER AND METHOD OF MAKING THE SAME
    6.
    发明申请
    TRANSISTOR HAVING A BACK-BARRIER LAYER AND METHOD OF MAKING THE SAME 有权
    具有背挡板层的晶体管及其制造方法

    公开(公告)号:US20150021660A1

    公开(公告)日:2015-01-22

    申请号:US13944672

    申请日:2013-07-17

    IPC分类号: H01L29/778 H01L29/66

    摘要: A transistor includes a substrate and a buffer layer on the substrate, wherein the buffer layer comprises p-type dopants. The transistor further includes a channel layer on the buffer layer and a back-barrier layer between a first portion of the channel layer and a second portion of the channel layer. The back-barrier layer has a band gap discontinuity with the channel layer. The transistor further includes an active layer on the second portion of the channel layer, wherein the active layer has a band gap discontinuity with the second portion of the channel layer. The transistor further includes a two dimensional electron gas (2-DEG) in the channel layer adjacent an interface between the channel layer and the active layer.

    摘要翻译: 晶体管包括衬底和衬底上的缓冲层,其中缓冲层包括p型掺杂剂。 晶体管还包括缓冲层上的沟道层和沟道层的第一部分和沟道层的第二部分之间的背面阻挡层。 后阻挡层与沟道层具有带隙不连续性。 晶体管还包括在沟道层的第二部分上的有源层,其中有源层与沟道层的第二部分具有带隙不连续性。 晶体管还包括在沟道层中与沟道层和有源层之间的界面相邻的二维电子气(2-DEG)。

    SEMICONDUCTOR DEVICE HAVING DOPED SEED LAYER AND METHOD OF MANUFACTURING THE SAME

    公开(公告)号:US20210036140A1

    公开(公告)日:2021-02-04

    申请号:US17074952

    申请日:2020-10-20

    摘要: A semiconductor device includes a doped substrate and a seed layer in direct contact with the substrate. The seed layer includes a first seed sublayer having a first lattice structure. The first seed layer is doped with carbon. The seed layer further includes a second seed sublayer over the first see layer, wherein the second seed layer has a second lattice structure. The semiconductor device further includes a graded layer in direct contact with the seed layer. The graded layer includes a first graded sublayer including AlGaN having a first Al:Ga ratio; a second graded sublayer including AlGaN having a second Al:Ga ratio different from the first Al:Ga ratio; and a third graded sublayer over including AlGaN having a third Al:Ga ratio different from the second Al:Ga ratio. The semiconductor device includes a channel layer over the graded layer. The semiconductor device includes an active layer over the channel layer.