Invention Grant
US08686389B1 Diffusion barrier layer for resistive random access memory cells 有权
用于电阻随机存取存储器单元的扩散势垒层

  • Patent Title: Diffusion barrier layer for resistive random access memory cells
  • Patent Title (中): 用于电阻随机存取存储器单元的扩散势垒层
  • Application No.: US13652742
    Application Date: 2012-10-16
  • Publication No.: US08686389B1
    Publication Date: 2014-04-01
  • Inventor: Yun WangImran Hashim
  • Applicant: Intermolecular Inc.
  • Applicant Address: US CA San Jose
  • Assignee: Intermolecular, Inc.
  • Current Assignee: Intermolecular, Inc.
  • Current Assignee Address: US CA San Jose
  • Main IPC: H01L29/02
  • IPC: H01L29/02
Diffusion barrier layer for resistive random access memory cells
Abstract:
Provided are resistive random access memory (ReRAM) cells having diffusion barrier layers formed from various materials, such as beryllium oxide or titanium silicon nitrides. Resistive switching layers used in ReRAM cells often need to have at least one inert interface such that substantially no materials pass through this interface. The other (reactive) interface may be used to introduce and remove defects from the resistive switching layers causing the switching. While some electrode materials, such as platinum and doped polysilicon, may form inert interfaces, these materials are often difficult to integrate. To expand electrode material options, a diffusion barrier layer is disposed between an electrode and a resistive switching layer and forms the inert interface with the resistive switching layer. In some embodiments, tantalum nitride and titanium nitride may be used for electrodes separated by such diffusion barrier layers.
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