Synthesis and characterization of topology-varied organic electroluminescent blue-light emitters based on carbazole and triphenylphosphine oxide derivatives

To correlate the chemical structure of triphenylphosphine oxide-bridged carbazole frameworks with their electroluminescent performance, synthesis and characterization of three topology-varied organic electroluminescent blue light emitters was reported, and a deep-blue non-doped OLED device with maximum external quantum efficiency of 2.45% and CIE coordinate of (0.16, 0.09) was realized.