  We propose the design of 1D photonic crystals and microcavities in which
fluorine-indium codoped cadmium oxide (FICO) nanocrystal based layers and
layers of diarylethene-based polyester (pDTE) are alternated or embedded in a
microcavity. The irradiation with UV light results in two different behaviours:
i) it dopes the FICO nanocrystals inducing a blue shift of their plasmonic
resonances; ii) it changes the real part of the refractive index of the
photochromic pDTE polymer. These two behaviours are combined in the proposed
photonic structures and can be useful for switchable filters and cavities for
light emission.
