Emission control: Carbazole-based dendritic alkynylgold(III) complexes have been evaluated as phosphorescent emitters in organic light-emitting devices. The energy as well as the bathochromic shift of the emissions can be tuned effectively through a control of the dendrimer generation (see spectra). The optimized devices show high current and external quantum efficiencies of up to 24.0 cd A−1 and 7.8 %, respectively.
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