Low-energy consumption and high-color-quality white organic light-emitting diodes

White organic light-emitting diodes (WOLEDs) offer a range of attractive characteristics include easily processable, glare-free and generate light over a large area. However, high-energy consumption, unreliable and low-color-quality are key issues limiting the future of WOLEDs. Enormous efforts in chemistry and the materials sciences to design better materials as well as in physics and engineering to invent new device concepts and design suitable fabrication schemes have been endeavored. This article reviews current developments in the field of WOLEDs and puts a special focus on new device concepts and on approaches to low-energy consumption and high-color-quality WOLED manufacturing.