| 초록 |
OLED light emitting materials have a molecular size corresponding to the nano scale and areconverted into light energy when given electrical energy. The new green fluorescent dopantmaterial was successfully synthesized by using anthracene as a central core and introducing amethyl group and tert-butyl group at various positions as diphenylamine group. Two compoundsare N9,N9,N10,N10-tetraphenylanthracene-9,10-diamine (TAD) and N9,N10-bis(4-(tert-butyl) phenyl)-N9,N10-di-o-tolylanthracene-9,10-diamine (p-Tb-o-Me-TAD). The synthesized material emits greenlight with the maximum wavelengths of 508 and 523 nm. p-Tb-o-Me-TAD shows excellent PLQYof 86.2% in solution state. When the synthesized material was used as a dopant in a device, TADshowed current efficiency (CE) of 17.71 cd/A and external quantum efficiency (EQE) of 6.11%. Thedevice using p-Tb-o-Me-TAD dopant exhibited current efficiency (CE) of 24.24 cd/A and externalquantum efficiency (EQE) of 7.27%. |
