Recently, we have reported that metal halide perovskite nanoparticles formed in
nanoporous alumina and silicon thin films exhibit blue shifted photoluminescence due to
spatial confinement, thus allowing for color tuning of the emission by varying the pore size.
While perovskite nanoparticles grown in nanoporous alumina films have been integrated
into LEDs, similar approaches have failed with silicon. Here, we report the results of
investigating the structure of the alumina pore system and the perovskite crystallites forming …