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Jun Yun Kim, Takuma Yasuda, Yu Seok Yang and Chihaya Adachi Organic Electronics: Bifunctional Star-Burst Amorphous Molecular Materials for OLEDs: Achieving Highly Efficient Solid-State Luminescence and Carrier Transport Induced by Spontaneous Molecular Orientation (Adv. Mater. 19/2013) Advanced Materials 25

Version of Record online: 13 MAY 2013 | DOI: 10.1002/adma.201370122

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A design strategy for achieving both efficient solid-state luminescence and high carrier transport properties in organic amorphous molecular materials is demonstrated by Chihaya Adachi, Takuma Yasuda, and co-workers on page 2666. The designed star-burst molecules form amorphous solid films, in which they can align horizontally onto the substrate. This preferential horizontal molecular orientation leads to enhanced charge carrier transport and improved light emission. A high external electroluminescence quantum efficiency of up to 5.9% is achieved by incorporating these bifunctional materials in OLEDs.

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