Electrohydrodynamic Printing of PCL@CsPbBr3 Composite Fibers with High Luminescence for Flexible Displays

Metal halide perovskite quantum dots (PQDs) are widely used in the display field due to their excellent photoelectric properties, such as ultra-narrow half-peak widths and ultra-pure luminescence color purity. Inkjet printing, laser direct writing electrospinning all common methods for PQDs printing prepare micropattern displays. In order produce large-scale high-resolution micropatterns, electrohydrodynamic (EHD) technology is capable of deposition highly oriented nanofibers on rigid or pliable, flat bent substrates with advantages real-time regulation single control. Therefore, it has a lot potential fabrication pliable electronic devices one-dimensional ordered light-emitting fibers. Polycaprolactone (PCL) an EHD polymer material superior biocompatibility, low melting point, saving energy easy degradation. By synthesizing CsPbBr3 (QDs) PCL composite spinning stock solution, we self-built platform PCL@CsPbBr3 optical fiber realized flexible micropatterns polydimethylsiloxane (PDMS) packaging. An x-ray diffractometer (XRD), scanning electron microscope (SEM) photoluminescence (PL) were characterize analyze fiber’s morphology, phase spectral characteristics. may open up interesting possibilities applications based metal PQDs.