A method of making a device includes forming a device layer, forming an
organic hard mask layer over the device layer, forming a first oxide hard
mask layer over the organic hard mask layer, forming a DARC layer over
the first oxide hard mask layer, forming a photoresist layer over the
DARC layer, patterning the photoresist layer to form a photoresist
pattern, and transferring the photoresist pattern to the device layer
using the DARC layer, the first oxide hard mask layer and the organic
hard mask layer.