Fishing – trapping – and vermin destroying
Patent
1993-02-18
1995-05-16
Quach, T. N.
Fishing, trapping, and vermin destroying
437192, 437245, H01L 21324
Patent
active
054160456
ABSTRACT:
A method of chemical vapor depositing a titanium nitride layer on a semiconductor wafer within a chemical vapor deposition reactor includes: a) positioning a wafer within a chemical vapor deposition reactor; b) injecting gaseous TiCl.sub.4, NH.sub.3 and N.sub.2 to within the reactor; and c) maintaining the reactor at a selected pressure and a selected temperature which are effective for reacting the TiCl.sub.4 and NH.sub.3 to deposit a uniform film comprising titanium nitride on the wafer, the selected temperature being less than or equal to about 500.degree. C. With a TiN film outwardly exposed, a wafer is annealed by the sequential steps of, a) rapid thermal processing the wafer having the outwardly exposed TiN film to a temperature from about 580.degree. C. to about 700.degree. C.; b) exposing the wafer to NH.sub.3 gas at a temperature from about 580.degree. C. to about 700.degree. C. for at least about 5 seconds to drive chlorine from the TiN film; c) rapid thermal processing the wafer to a temperature of at least about 780.degree. C.; and d) exposing the wafer to N.sub.2 gas at a temperature of at least about 780.degree. C. for at least about 10 seconds.
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Beck James
Kauffman Ralph E.
Martin Annette L.
Prucha Michael J.
Thakur Randhir P. S.
Micro)n Technology, Inc.
Quach T. N.
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