Patents by Inventor Basanth Jaqannathan

Basanth Jaqannathan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7652288
    Abstract: A method and apparatus for depositing single crystal, epitaxial films of silicon carbon and silicon germanium carbon on a plurality of substrates in a hot wall, isothermal UHV-CVD system is described. In particular, a multiple wafer low temperature growth technique in the range from 350° C. to 750° C. is described for incorporating carbon epitaxially in Si and SiGe films with very abrupt and well defined junctions, but without any associated oxygen background contamination. Preferably, these epitaxial SiC and SiGeC films are in-situ doped p- or n-type and with the presence of low concentration of carbon <1020 cm?3, the as-grown p- or n-type dopant profile can withstand furnace anneals to temperatures of 850° C. and rapid thermal anneal temperatures to 1000° C.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: January 26, 2010
    Assignee: International Business Machines Corporation
    Inventors: Jack O. Chu, Basanth Jaqannathan, Alfred Grill, Bernard S. Meyerson, John A. Ott
  • Publication number: 20090026459
    Abstract: A method and apparatus for depositing single crystal, epitaxial films of silicon carbon and silicon germanium carbon on a plurality of substrates in a hot wall, isothermal UHV-CVD system is described. In particular, a multiple wafer low temperature growth technique in the range from 350° C. to 750° C. is described for incorporating carbon epitaxially in Si and SiGe films with very abrupt and well defined junctions, but without any associated oxygen background contamination. Preferably, these epitaxial SiC and SiGeC films are in-situ doped p- or n-type and with the presence of low concentration of carbon <1020 cm?3, the as-grown p- or n-type dopant profile can withstand furnace anneals to temperatures of 850° C. and rapid thermal anneal temperatures to 1000° C.
    Type: Application
    Filed: June 27, 2008
    Publication date: January 29, 2009
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Jack Oon Chu, Basanth Jaqannathan, Alfred Grill, Bernard Steele Meyerson, John Albrecht Ott
  • Patent number: 7405422
    Abstract: A method and apparatus for depositing single crystal, epitaxial films of silicon carbon and silicon germanium carbon on a plurality of substrates in a hot wall, isothermal UHV-CVD system is described. In particular, a multiple wafer low temperature growth technique in the range from 350° C. to 750° C. is described for incorporating carbon epitaxially in Si and SiGe films with very abrupt and well defined junctions, but without any associated oxygen background contamination. Preferably, these epitaxial SiC and SiGeC films are in-situ doped p- or n-type and with the presence of low concentration of carbon <1020 cm?3, the as-grown p- or n-type dopant profile can withstand furnace anneals to temperatures of 850° C. and rapid thermal anneal temperatures to 1000° C.
    Type: Grant
    Filed: December 30, 2006
    Date of Patent: July 29, 2008
    Assignee: International Business Machines Corporation
    Inventors: Jack O. Chu, Basanth Jaqannathan, Alfred Grill, Bernard S. Meyerson, John A Ott
  • Publication number: 20070122989
    Abstract: A method and apparatus for depositing single crystal, epitaxial films of silicon carbon and silicon germanium carbon on a plurality of substrates in a hot wall, isothermal UHV-CVD system is described. In particular, a multiple wafer low temperature growth technique in the range from 350° C. to 750° C. is described for incorporating carbon epitaxially in Si and SiGe films with very abrupt and well defined junctions, but without any associated oxygen background contamination. Preferably, these epitaxial SiC and SiGeC films are in-situ doped p- or n-type and with the presence of low concentration of carbon <1020 cm?3, the as-grown p- or n-type dopant profile can withstand furnace anneals to temperatures of 850° C. and rapid thermal anneal temperatures to 1000° C.
    Type: Application
    Filed: December 30, 2006
    Publication date: May 31, 2007
    Applicant: International Business Macines Corporation
    Inventors: Jack Chu, Basanth Jaqannathan, Alfred Grill, Bernard Meyerson, John Ott