Arne W. Ballantine - Coldspring NY Cheryl G. Faltermeier - Lagrange NY Jeffrey D. Gilbert - Burlington VT Ronald D. Goldblatt - Yorktown Heights NY Nancy A. Greco - Lagrangeville NY Stephen E. Greco - Lagrangeville NY Frank V. Liucci - Wappingers Falls NY Glenn Robert Miller - Essex Junction VT Bruce A. Root - Westford VT Andrew H. Simon - Fishkill NY Anthony K. Stamper - Williston VT Ronald A. Warren - Essex Junction VT David H. Yao - Essex VT
Assignee:
International Business Machines Corporation - Armonk NY
International Classification:
H01L 2144
US Classification:
438660, 438663, 438687
Abstract:
A method for increasing the production yield of semiconductor devices having copper metallurgy planarized by a chemical-mechanical planarization process which includes a slurry that contains a conductor passivating agent, like benzotriazole, wherein a non-oxidizing anneal is used to remove any residue which might interfere with mechanical probing of conductive lands on the substrate prior to further metallization steps. The anneal may be performed by any of several techniques including a vacuum chamber, a standard furnace or by rapid thermal annealing.
Arne W. Ballantine - Cold Spring NY Jeffrey S. Brown - Middlesex VT Jeffrey D. Gilbert - South Burlington VT James J. Quinlivan - Essex Junction VT James A. Slinkman - Montpelier VT Anthony C. Speranza - Essex Junction VT
Assignee:
International Business Machines Corporation - Armonk NY
International Classification:
H01L 2176
US Classification:
438424, 438435, 438437, 438770
Abstract:
A structure comprising a trench having a liner with rounded corners in the top and bottom of the trench is obtained by rapid thermal oxidation.
Arne W. Ballantine - Round Lake NY John J. Ellis-Monaghan - Grande Isle VT Jeffrey D. Gilbert - South Burlington VT Glenn R. Miller - Essex Junction VT James A. Slinkman - Montpelier VT
Assignee:
International Business Machines Corporation - Armonk NY
A method for forming a desired junction profile in a semiconductor device. At least one dopant is introduced into a semiconductor substrate. The at least one dopant is diffused in the semiconductor substrate through annealing the semiconductor substrate and the at least one dopant while simultaneously exposing the semiconductor substrate to an electric field.
Arne W. Ballantine - Cold Spring NY Jeffrey D. Gilbert - South Burlington VT Robert G. Miller - Essex Junction VT Amy L. Myrick - Waterbury Ctr. CT Ronald A. Warren - Milton VT
Assignee:
International Business Machines Corporation - Armonk NY
International Classification:
H01L 31058
US Classification:
257467, 257 43, 257 48, 257751
Abstract:
A method, and associated structure, for monitoring temperature and temperature distributions in a heating chamber for a temperature range of 200 to 600Â C. , wherein the heating chamber may be used in the fabrication of a semiconductor device. A copper layer is deposited over a surface of a semiconductor wafer. Next, the wafer is heated in an ambient oxygen atmosphere to a temperature in the range of 200-600Â C. The heating of the wafer oxidizes a portion of the copper layer, which generates an oxide layer. After being heated, the wafer is removed and a sheet resistance is measured at points on the wafer surface. Since the local sheet resistance is a function of the local thickness of the oxide layer, a spatial distribution of sheet resistance over the wafer surface reflects a distribution of wafer temperature across the wafer surface during the heating of the wafer. The measured spatial distribution of sheet resistance may be utilized to readjust the spatial distribution of heat input to another wafer in order to achieve a more uniform temperature across the other wafers surface. In addition, the monitor may be reconditioned for repeated use by heating the monitor in a hydrogen ambient environment to convert the oxide layer to unoxidized copper.
Structure And Method For Formation Of A Blocked Silicide Resistor
James W. Adkisson - Jericho VT Arne W. Ballantine - Cold Spring NY Matthew D. Gallagher - Burlington VT Peter J. Geiss - Underhill VT Jeffrey D. Gilbert - Burlington VT Shwu-Jen Jeng - Wappingers Falls NY Donna K. Johnson - Underhill VT Robb A. Johnson - South Burlington VT Glen L. Miles - Essex Junction VT Kirk D. Peterson - Essex Junction VT James J. Toomey - Poughkeepsie NY Tina Wagner - Newburgh NY
Assignee:
International Business Machines Corp. - Armonk NY
International Classification:
H01L 2131
US Classification:
438791, 438792, 438257, 438260
Abstract:
A process of forming a nitride film on a semiconductor substrate including exposing a surface of the substrate to a rapid thermal process to form the nitride film.
Method Of Reducing Polysilicon Depletion In A Polysilicon Gate Electrode By Depositing Polysilicon Of Varying Grain Size
Arne W. Ballantine - Round Lake NY Kevin K. Chan - Staten Island NY Jeffrey D. Gilbert - Burlington VT Kevin M. Houlihan - Boston MA Glen L. Miles - Essex Junction VT James J. Quinlivan - Essex Junction VT Samuel C. Ramac - Poughkeepsie NY Michael B. Rice - Colchester VT Beth A. Ward - Essex Junction VT
Assignee:
International Business Machines Corporation - Armonk NY
International Classification:
H01L 213205
US Classification:
438592, 438585, 438199, 438287, 438655
Abstract:
Polysilicon electrical depletion in a polysilicon gate electrode is reduced by depositing the polysilicon under controlled conditions so as to vary the crystal grain size through the thickness of the polysilicon. The resulting structure may have two or more depth-wise contiguous regions of respective crystalline grain size, and the selection of grain size is directed to maximize dopant activation in the polysilicon near the gate dielectric, and to tailor the resistance of the polysilicon above that first region and more distant from the gate dielectric. This method, and the resulting structure, are advantageously employed in forming FETs, and doped polysilicon resistors.
Discontinuous Dielectric Interface For Bipolar Transistors
Arne W. Ballantine - South Burlington VT Douglas D. Coolbaugh - Essex Junction VT Jeffrey Gilbert - Winooski VT Joseph R. Greco - South Burlington VT Glenn R. Miller - Essex Junction VT
Assignee:
International Business Machines Corporation - Armonk NY
A process for forming at least one interface region between two regions of semiconductor material. At least one region of dielectric material comprising nitrogen is formed in the vicinity of at least a portion of a boundary between the two regions of semiconductor material, thereby controlling electrical resistance at the interface.
Arne W. Ballantine - Cold Spring NY Jeffrey D. Gilbert - South Burlington VT Robert G. Miller - Essex Junction VT Amy L. Myrick - Waterbury Ctr. VT Ronald A. Warren - Milton VT
Assignee:
International Business Machines Corporation - Armonk NY
International Classification:
H01L 2166
US Classification:
438 18, 438 54, 438104, 438653
Abstract:
A method, and associated structure, for monitoring temperature and temperature distributions in a heating chamber for a temperature range of 200 to 600Â C. , wherein the heating chamber may be used in the fabrication of a semiconductor device. A copper layer is deposited over a surface of a semiconductor wafer. Next, the wafer is heated in an ambient oxygen atmosphere to a temperature in the range of 200-600Â C. The heating of the wafer oxidizes a portion of the copper layer, which generates an oxide layer. After being heated, the wafer is removed and a sheet resistance is measured at points on the wafer surface. Since the local sheet resistance is a function of the local thickness of the oxide layer, a spatial distribution of sheet resistance over the wafer surface reflects a distribution of wafer temperature across the wafer surface during the heating of the wafer. The measured spatial distribution of sheet resistance may be utilized to readjust the spatial distribution of heat input to another wafer in order to achieve a more uniform temperature across the other wafers surface. In addition, the monitor may be reconditioned for repeated use by heating the monitor in a hydrogen ambient environment to convert the oxide layer to unoxidized copper.
Dr. Gilbert graduated from the University of Tennessee College of Medicine at Memphis in 2002. He works in Knoxville, TN and specializes in Gastroenterology. Dr. Gilbert is affiliated with North Knoxville Medical Center.