Fabrication of inorganic/organic hybrid distributed Bragg reflectors based on inorganic CuSCN for all-solution-processed polymer light-emitting diodose

The fabrication of inorganic/organic hybrid distributed Bragg reflector (DBR) is investigated to realize all-solution processed polymer light-emitting diodes (PLED s) with the narrowing of electroluminescence (EL) spectra. The large refractive index contrast between inorganic copper(l) thiocyanate, CuSCN and polymer, cellulose acetate results in the fabrication of DBR with high reflectivity (> 95 %) from nanostructures consisting of only five bilayers. The narrowing of EL spectrum with a full width at half maximum of approximately 25 nm is achieved from all-solution-processed PLED based on highly conductive poly(ethylenedioxythiophene):poly(styrenesulfonate) anode and super yellow as an emissive layer except for a silver cathode.