Bis(carbazolyl)benzodifuran: A High-Mobility Ambipolar Material for Homojunction Organic Light-Emitting Diode Devices

A new ambipolar material bis(carbazolyl)-benzodifuran (CZBDF) shows well balanced and high carrier mobilities for both holes and electrons (>10(-3) cm(2) V(-1) s(-1)). This new material allows us to fabricate efficient p-i-n homojunction OLEDs that emit light across the full visible light range and perform at a level similar to state-of-the-art heterojunction devices.