Popis: |
We developed highly efficient deep blue fluorescent materials. The bottom-emission OLED showed a CIE1931 coordinate of (0.14, 0.08) and a current efficiency of 6.5 cd/A with using a new efficiency-enhancement layer. We achieved CIEy of 0.062, a current efficiency of 7.5 cd/A and lifetime (LT95) of 2,000 hrs by depositing a new organic capping layer on a top-emission blue OLEDs, A hybrid white OLED by stacking a deep blue fluorescence and a phosphorescent red/green stacked yellow was also demonstrated which has an efficacy of 23 lm/W and color temperature of 10,000 K at 10 mA/cm2 and lifetime (LT50) of over 60,000 hrs at a luminance of 1,000 cd/m2. |