Fully substituted ethylene as a new class of efficient sky‐blue emitting materials for OLEDs

Abstract We synthesized new blue and bluish green emitting materials by using fully substituted ethylene moieties. Multi‐layered EL devices were fabricated with synthesized materials and evaluated in terms of emission color and luminescence efficiency. TBBPE[EML 2] device showed bluish‐green CIE value of (0.236, 0.412) and 5.02cd/A at 10mA/cm2. BPBBPE[EML 3] device also showed sky‐blue CIE value of (0.218, 0.355) and 2.31cd/A at 10mA/cm2.