| 초록 |
Deep-blue triplet emitters remain far inferior to standard red and green triplet emitters in terms of exhibiting high color purities Commission International de l'Éclairage (CIE y values of ≤ 0.1), external quantum efficiencies (EQEs), and high electroluminescent brightnesses in phosphorescent organic light emitting diodes. In this study, mer-tris(N-phenyl, N-benzyl-pyridoimidazol-2-yl)iridium(III) (mer-Ir1) is developed, which meets the requirements of the National Television System Committee CIE (x, y) coordinates of (0.149, 0.085) with an extremely high EQE of 24.8% and maximum brightness (Lmax) of 6453 cd m−2, by device C with a 40 vol% doping ratio. Moreover, the device A fabricated an EQEmax of 21.3%, an Lmax of 5247 cd m−2, and CIE(x, y) coordinates of (0.151, 0.086) at a 30 vol% doping ratio. This is the first report of high performance, deep-blue phosphor, carbene-based Ir(III) complex device with outstanding CIE(x, y) color coordinates and a high EQE. |
