Stanford team demonstrates how water additives enhance the performance of violet perovskite light-emitting diodes

• Scientists from Stanford University have actually reported a novel way to boost the performance of perovskite light-emitting diodes (PeLEDs) in the violet region. The new method could stand for an appealing step toward economical as well as reliable ultraviolet PeLEDs.

By engineering the formation procedure of spin-coated 2D perovskites with water, the resulting PeLEDs exhibit bright violet emission at 408 nm with an outside quantum effectiveness of 0.41%, a 5-fold boost over control devices.

The scientists boosted the uniformity of perovskite films by including water into the precursor service to engineer the formation procedure of spin-coated 2D perovskites. The resulting improved film uniformity, combined with the reduction in nanoplate size, lowered leak present and advertised faster recombination rates.