Luminescence shift of electrospun ZnO/MEH-PPV/PEO composite nanofibers

► Photoluminescence characteristics of electrospun ZnO/MEH-PPV/PEO nanofibers. ► Sequential red- and blue-shifts with increasing concentration of ZnO nanoparticles. ► Dispersed ZnO nanoparticles induce the aggregation of MEH-PPV and the red-shift.