Patents Represented by Attorney Joy Griebenow
  • Patent number: 4977106
    Abstract: A procedure in the formation of semiconductor devices for depositing TiN wherein silane and preferably SiH4 is substituted for the hydrogen in the prior art procedures to provide the approximate twofold to fivefold increase in TiN deposition rate at 400 degrees C. It is believed that the reason for the deposition rate increase is that there is a larger free energy change in the reaction which is believed to occur according to the equation: TiCl4+SiH4+NH3.fwdarw.TiN+SiCl4+(7/2)H2. The above described reaction provides cleaner films when performed in a cold wall CVD reactor than is provided by the prior art procedures as described above. Resistivity of 100 microohm-cm has been measured, this being typical of sputtered TiN films.
    Type: Grant
    Filed: May 1, 1990
    Date of Patent: December 11, 1990
    Assignee: Texas Instruments Incorporated
    Inventor: Gregory C. Smith