Blue Perovskite LEDs: Reducing Architecture Limitations for Efficient Blue Perovskite Light‐Emitting Diodes (Adv. Mater. 20/2018)

Abstract

Blue perovskite light‐emitting diodes (LEDs) have lagged significantly behind red and green ones. In article number 1706226, Daniel N. Congreve and co‐workers show that the device architecture plays a key role in this lag, and they propose an alternate structure that maintains robust nanocrystal emission. Devices with this architecture show external quantum efficiencies of 0.50% at 469 nm. This architecture enables efficient devices across the entire blue–green portion of the spectrum.