| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d80f1040809503e54509c871ba828f75 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L21-76874
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L21-76843
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L21-76883
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L21-76844
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L21-28518
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L21-28556
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L21-2855
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L21-76862
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L21-76864
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L21-76873
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L21-76868 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01L21-4763 |
| filingDate |
2007-09-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2011-02-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_18977e54b9bf8e3b9cfe89130e1c91ae
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a3cfc71fb21314bfbcce3af178cf698b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d1216cd9e0b6675edb9350f77f7921df
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_43a4dc0d31aa6016dc7428009c19f40c |
| publicationDate |
2011-02-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-7884012-B2 |
| titleOfInvention |
Void-free copper filling of recessed features for semiconductor devices |
| abstract |
A method is provided for void-free copper (Cu) filling of recessed features in a semiconductor device. The method includes providing a patterned substrate containing a recessed feature, depositing a barrier film on the patterned substrate, including in the recessed feature, depositing a Ru metal film on the barrier film, and depositing a discontinuous Cu seed layer on the Ru metal film, where the Cu seed layer partially covers the Ru metal film in the recessed feature. The method further includes exposing the substrate to an oxidation source gas that oxidizes the Cu seed layer and the portion of the Ru metal film not covered by the Cu seed layer, heat-treating the oxidized Cu seed layer and the oxidized Ru metal film under high vacuum conditions or in the presence of an inert gas to activate the oxidized Ru metal film for Cu plating, and filling the recessed feature with bulk Cu metal. The exposure to the oxidation source gas can be an air exposure commonly encountered in semiconductor device manufacturing prior to Cu plating. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9087881-B2 |
| priorityDate |
2007-09-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |