Romoving sacrificial material by thermal decomposition

摘要

A thermally decomposable sacrificial material is deposited in a void or opening in a dielectric layer on a semiconductor substrate. The thermally decomposable sacrificial material may be removed without damaging or removing the dielectric layer. The thermally decomposable sacrificial material may be a combination of organic and inorganic materials, such as a hydrocarbon-siloxane polymer hybrid.