D. Louis et al., POST ETCH CLEANING OF LOW-K DIELECTRIC MATERIALS FOR ADVANCED INTERCONNECTS - CHARACTERIZATION AND PROCESS OPTIMIZATION, Microelectronic engineering, 42, 1998, pp. 415-418
The removal of photoresist and etch residues from an Interlayer Dielec
tric sandwich incorporating a FOX (flowable oxide) low-k dielectric po
lymer can be successfully achieved by implementing a process using H-2
/N-2 forming gas plasma in conjunction with Posistrip(R)EKC(R)LE. This
cleaning procedure allows W filling to be carried out without delamin
ation and via poisoning.