Microfluidic white organic light-emitting diode

A liquid organic light-emitting diodes (OLEDs) which uses an liquid organic semiconductor (LOSs) as the emitting layer has been increasing interest for novel organic electronic devices. Previously, microfluidic OLEDs that combined liquid-OLEDs with microfluidic technologies was proposed in order to integrate LOSs on a single chip and utilize liquid features. Here, we demonstrated a novel microfluidic white OLED (microfluidic WOLED) based on integrated sub-100-μm-wide microchannels. The fabricated device exhibited white electroluminescence, which broadly covered the visible light spectrum, via simultaneous greenish-blue and yellow emissions. The proposed device has potential applications in future flexible liquid-based displays.