Enhanced selectivity over a photoresist film and process optimization for reactive ion etching of NiCr
NiCr films are patterned by RIE though a photoresist mask using Cl2/BCl3/SF6. The selectivity over the photoresist is increased by 4.48.3 times by adding SF6. The impact of various gas mixtures, pressures, and RF powers are studied. Optimum etch parameters are found.
selectivity optimization nicr rie sf6