Background Perovskites have widely been considered as promising next-generation materials for future display and solid-state lighting applications. Most current perovskite LEDs are produced using solution processing, and over 20% external quantum efficiencies (EQE) in LEDs have been achieved in recent studies. Vacuum-based deposition has also attracted...

Organic light emitting devices (OLEDs) are a new generation of display technology. OLEDs with polarized light are optimal for mobile displays or other full color display applications. To enable a high quality of full color displays, a polarizer may be paired with a transparent electrode of an OLED. This filters unwanted reflected light from the background...