Aluminum can be applied on the backside 96 of the silicon substrate to form an electrical contact by {HEAD ~ any suitable process} such as evaporation, {TAIL ~ physical vapor deposition} or chemical vapor deposition 
Aluminum can be applied on the backside 96 of the silicon substrate to form an electrical contact by { HEAD ~ any suitable process } such as evaporation , { TAIL ~ physical vapor deposition } or chemical vapor deposition
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