Indolo[3,2- b]carbazole: Promising building block for highly efficient electroluminescent materials

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Two luminescent materials based on indolo[3,2- b]carbazole have been designed and synthesized. They were highly fluorescent both in solution and in the solid state. High-performance electroluminescent devices with indolo[3,2- b]carbazole luminescent derivatives as the emissive materials were fabricated for the first time with low turn-on voltage of 2.65 V, high luminescence efficiency of 7.92 lm W −1, and high brightness of 68729 cd m −2. The results demonstrated that indolo[3,2- b]carbazole has great potentials as promising building block for highly efficient electroluminescent materials.