Plastic Photoluminescent film material is a kind of polymer compound containing Photoluminescent film agent. It can emit light after irradiation by external light source, and the longest time of luminescence developed can reach more than 70h, which is also known as long afterglow luminescence photoluminescent plastic sheet material. When the external light source is evacuated, it can emit light under the excitation of stored energy, which is used for dark indication and decoration functions
Polymer electro Photoluminescent film products are a new kind of high value-added functional materials emerging in recent years. In particular, organic electro Photoluminescent film materials have become a research topic of great concern. Compared with inorganic semiconductor electro Photoluminescent film materials, polymer electroluminescence has the advantages of low-voltage dc drive, high brightness and high efficiency. Such as polyethylene acetylene (PPV), polyethylene carbazole (PVK). With its low price, simple production process, good mechanical properties, good processing performance and thermal stability, the polymer will undoubtedly become the most commercially promising electro Photoluminescent film materials.
One of the Photoluminescent film principles of plastic photoluminescent vinyl film is the crystalline fluorescein or product of electron-organic pigments, which fluoresce when excited by light as electrons jump.
Similar to photoluminescence materials, the electroluminescence mechanism of general polymers is mainly to inject holes and electrons from the positive pole and the negative pole respectively when electrifying. These two kinds of carriers migrate under the action of electric field, and they compound into excitons at a certain place of the polymer, and then the excitons attenuate and emit light.
Luminescence process can be divided into the formation of exciton with two steps of exciton decline, which injected carrier (electrons and holes) through migrations in polymer met in the semiconductor, the formation of singlet exciton or triplet excitons, singlet exciton by composite radiation attenuation and the emitted photons, triplet excitons due to its energy than singlet exciton much lower, its basic is radiation attenuation.
ElectroPhotoluminescent film light is a layer of photoluminescent self adhesive vinyl material squeezed around the conductor, which is tightly twisted together with copper wire or high-strength conductor after insulation. When in use, the inner conductor is energized and the outer conductor is grounded, so there is a certain potential difference on the insulating material. These two kinds of carriers migrate under the action of the electric field, and they compound into excitons at a certain place in the polymer, and then the excitons attenuate and emit light.