Novel Naphtho[2,3‐c][1,2,5]thiadiazole Derivative for Non‐doped Small Molecular Organic Red‐Light‐Emitting Diodes

Efficient red-light emission is obtained with a novel, non-doped, naphtho[2,3-c][1,2,5]thiadiazole (NTD) derivative (see figure). This material does not contain strong donor groups so dipole–dipole interactions and inter-molecular π–π stacking can be substantially suppressed. Non-doped pure-red OLEDs with high efficiency have been prepared indicating that this material has great potential in the fabrication of high-performance red OLEDs.