The transparency of photoresist films to ultraviolet light may be
increased without sacrificing photospeed or resolution of the photoresist
by including ultraviolet light transparent nanoparticles to the
photoresist formulations. The ultraviolet light transparent nanoparticles
may be included in the photoresist formulations as filler to "dilute" the
ultraviolet light opacity of the photoresist, as side-chains to the
photoimageable species that form the photoresist matrix, or as the
photoimageable species themselves that form the backbone of the
photoresist matrix. The photoresist formulation may also be a hybrid
solution of any of these variations on the inclusion of the ultraviolet
light transparent nanoparticles. The ultraviolet light transparent
nanoparticles may mostly contain carbon or silicon.