Highly Efficient Red Organic Light-Emitting Transistors (OLETs) on High-k Dielectric

The investigation of the optoelectronic properties of a red organic light-emitting transistor using a high-k polymer (P(VDF-TrFE-CFE)) as gate dielectric is reported. Introducing the high-k polymer strongly reduces the threshold voltages (compared to poly(methyl methacrylate)) with improved efficiency, while maintaining comparable output light power. Use of a high-k polymer as gate dielectric enables the organic light-emitting transistor platform to be exploited in the display market, as it can be driven by commercially available electronics, thus enabling low-bias-driven organic electronics.