Problem wbsilicide SNF 2011-07-22 17:04:19: New SC-1

latta at snf.stanford.edu latta at snf.stanford.edu
Fri Jul 22 17:04:20 PDT 2011


Please be advised that the organic clean bath (4:1 sulfuric peroxide) has been permanently changed to 5:1:1 H2O:H2O2;NH4OH.
The bath must be changed every four hours and the addition of H2O2 is allowed, much the same as the 5:1:1 H2O;H2O2:HCl bath.  The bath temperature is 50C and the time remains 10 minutes.
There are several very good reasons for the change; 1) safety, 2) better quality clean, 3) sulfur contamination of nanowires and  4) lower chemical costs and on-site inventory.
Look for the forthcoming white paper on the wiki.  It will include references and results of our tests.
Please direct any questions or concerns to SNF staff members.




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