| 초록 |
We fabricated color tunable double layer white organic light emitting device by different red host composition. Device employed N,N'-dicarbazolyl-3,5-benzene(mCP) with doped Iridium(III)bis[4,6-di-fluorophenyl-pyridinato N,C2] picolinate(Firpic) for blue emitting layer and 1,3,5-tri(9H-carbazol-9-yl)benzene(TCTA) and 1,3,5-tris(1phenyl-1H-benzo[d]imidazol-2-yl)benzene(TPBi) with doped (Iridium (III)bis(1-phenyl(quinolinato-N,C2'))acetylacetonate(Ir(pq)2acac) for red emitting layer. As the change of TCTA:TPBi mixed host ratio, the Commission Intemationale de l'Eclairage coordinates changed from (0.31,0.35) to (0.39,0.36)and external quantum efficiency achived from 7.6% to 10.1% at 1000cd/cm2. |
