Methods for silicon carbide gate formation

    公开(公告)号:US12191360B2

    公开(公告)日:2025-01-07

    申请号:US17562938

    申请日:2021-12-27

    Abstract: A method of forming a gate structure on a substrate with increased charge mobility. In some embodiments, the method may include depositing an amorphous carbon layer on a silicon carbide layer on the substrate to form a capping layer on the silicon carbide layer, annealing the silicon carbide layer at a temperature of greater than approximately 1800 degrees Celsius, forming a hard mask on the silicon carbide layer by patterning the amorphous carbon layer, etching a trench structure of the gate structure into the silicon carbide layer using the hard mask, removing the hard mask to expose the silicon carbide layer, depositing a silicon dioxide layer on the silicon carbide layer using an ALD process, performing at least one interface treatment on the silicon dioxide layer, depositing a gate oxide layer of the gate structure on the silicon dioxide layer, and depositing a gate material on the gate oxide layer.

    Methods of doping substrates with ALD
    7.
    发明授权
    Methods of doping substrates with ALD 有权
    使用ALD掺杂底物的方法

    公开(公告)号:US09218973B2

    公开(公告)日:2015-12-22

    申请号:US13917039

    申请日:2013-06-13

    Abstract: Provided are methods of doping substrates and making doped semiconductor features. An exemplary method includes providing a substrate having at least one feature having an aspect ratio; depositing a layer of dopants onto the substrate, the layer of dopants having a shape conforming to the at least one feature. A dielectric layer is deposited onto the layer of dopants, the dielectric layer having a shape conforming to the layer of dopants. The dielectric layer is annealed to diffuse the dopants into the substrate.

    Abstract translation: 提供掺杂衬底和制造掺杂半导体特征的方法。 一种示例性方法包括提供具有至少一个具有纵横比的特征的基底; 在衬底上沉积掺杂剂层,掺杂剂层具有符合至少一个特征的形状。 介电层沉积在掺杂剂层上,电介质层具有符合掺杂剂层的形状。 将介电层退火以将掺杂剂扩散到衬底中。

    Multi-layer stacks for 3D NAND extendibility

    公开(公告)号:US10700087B2

    公开(公告)日:2020-06-30

    申请号:US16151467

    申请日:2018-10-04

    Abstract: Embodiments described herein relate to methods and materials for fabricating semiconductor devices, such as memory devices and the like. In one embodiment, a memory layer stack includes materials having differing etch rates in which one material is selectively removed to form an airgap in the device structure. In another embodiment, silicon containing materials of a memory layer stack are doped or fabricated as a silicide material. In another embodiment, a silicon nitride material is utilized as an interfacial layer between oxide containing and silicon containing layers of a memory layer stack.

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