| 초록 |
Highly efficient blue-based hybrid organic-inorganic polymer light emitting diodes were demonstrated by the combination effect of polar solvent treatment on zinc oxide and hole trap using poly(9,9-dioctylfluoene) (F8) : poly(9,9-dioctylfluorene-co-N-(4-butylphenyl)-diphenylamine (TFB) blend for balancing the charge carrier transport and for enhancing the recombination of charge carriers and the device efficiency. The amine-based interfacial layer blocked majority carriers of hole, reduced exciton quenching and enhanced the electron injection by reducing the energy barrier between ZnO and emissive layer. Reduced optical quenching was confirmed from optical loss coefficient measurement. Blending the TFB with F8 made hole trap for the balance of charge carriers, enhanced device performance. |
