Hi,
I have been trying to make ~ 1-2 micron thick aluminum films by thermal
evaporation. The films I get are typically white in color (non-shiny)
and rough (inspected through AFM). I have used both the boron nitride
crucible and tungsten boat as the source. The pressure at evaporation is
typically 2*10^-6 (before starting evaporation it is < 10^-6 ) What is
the problem? Or is thermal evaporation not a good method for this?
Thanks
SR