| 초록 |
We have synthesized green fluorescent emitters of N9,N9,N10,N10-tetraphenylanthracene-9,10-diamine (TAD) and N9,N9,N10,N10-tetra-o-tolylanthracene-9,10-diamine (oMe-TAD) includinganthracene and diphenylamine moiety and evaluated properties of compounds. The methyl groupswere introduced to the diphenylamine to prevent molecular aggregation of the dopant and reduceself-quenching through steric hindrance of molecular structure. In solution state, photoluminescence(PL) maximum wavelength is 508 nm for TAD and 519 nm for oMe-TAD. In film state, PL maximum wavelength is 518 nm for TAD and 527 nm for oMe-TAD. In electroluminescence (EL) spectra, ELmaximum wavelength of TAD is 508 nm and EL maximum wavelength of oMe-TAD is 522 nm. Thedoped device using TAD as green fluorescent dopant exhibited CE of 17.7 cd/A, PE of 7.74 lm/W,and EQE of 6.11%. The doped device using oMe-TAD as dopant exhibited CE of 19.8 cd/A, PE of7.23 lm/W, and EQE of 5.97%. |
