Patent ID: 8927430
Filing Date: 2015-01-06
Classification: H01L

Abstract:
1. A method comprising: providing a structure comprising a first layer overlying a substrate, where the first layer comprises a dielectric material having a plurality of pores; applying a filling material to a surface of the first layer; after applying the filling material, heating the structure to enable the filling material to at least partially fill the plurality of pores, where heating the structure results in residual filling material being left on the surface of the first layer and forming an overburden layer; after heating the structure to enable the filling material to at least partially fill the plurality of pores, chilling the structure to a temperature below room temperature; removing the overburden layer by applying a solvent wash, the removing of the overburden layer being based on a difference in solubilities of the filling material in the plurality of pores and the overburden layer; and thereafter, removing the filling material from the plurality of the pores.