Easy accessible blue luminescent carbazole-based materials for organic light-emitting diodes

Abstract The thermal, optical, electrochemical and charge transport properties of a series of nine straightforward carbazole-based compounds have been analysed and interpreted according to their molecular structure by means of the X-ray analysis of single crystals. A non-doped OLED device with low turn-on voltage and maximum luminance up to 1.4 × 10 4  cd m −2 was achieved. DFT calculations have been performed to explain the high efficiency of radiative exciton production.