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Low temperature deposition of barrier layers

Patent 6204172 Issued on March 20, 2001. Estimated Expiration Date: Icon_subject September 3, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

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Inventor

Application

No. 146300 filed on 09/03/1998

US Classes:

438/653, At least one layer forms a diffusion barrier257/295, With ferroelectric material layer257/E21.584, Barrier, adhesion or liner layer (EPO)427/60, Post-treating with solid treating member438/458, Subsequent separation into plural bodies (e.g., delaminating, dicing, etc.)438/600Using structure alterable to conductive state (i.e., antifuse)

Examiners

Primary: Elms, Richard
Assistant: Luy, Pho

Attorney, Agent or Firm

International Class

H01L 021/44

Abstract

The present invention provides a method for forming a barrier layer, preferably a conductive barrier layer. According to the present invention, a barrier layer is formed from an organometallic precursor in the presence of an oxidant in a low temperature deposition technique using a platinum containing precursor. Such layers are particularly advantageous for use in memory devices, such as dynamic random access memory (DRAM) devices.

Other References

  • Bhatt et al., "Novel high temperature multilayer electrode-barrier structure for high-density ferroelectric memories," Appl. Phys. Letter., 71 (1997)
  • Kwon et al., "Characterization of Pt Thin Films Deposited by Metallorganic Vapor Deposition for Ferroelectric Bottom Electrodes," J. Electrochem. Soc., 144, 2848-2854 (1997
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