title: Low driving voltage blue, green, yellow, red and white organic light-emitting diodes with a simply double light-emitting structure.
abstract: Low driving voltage blue, green, yellow, red and white phosphorescent organic light-emitting diodes (OLEDs) with a common simply double emitting layer (D-EML) structure are investigated. Our OLEDs without any out-coupling schemes as well as n-doping strategies show low driving voltage, e.g. < 2.4 V for onset and < 3 V for 1000 cd/m2, and high efficiency of 32.5 lm/W (13.3%), 58.8 lm/W (14.3%), 55.1 lm/W (14.6%), 24.9 lm/W (13.7%) and 45.1 lm/W (13.5%) for blue, green, yellow, red and white OLED, respectively. This work demonstrates that the low driving voltages and high efficiencies can be simultaneously realized with a common simply D-EML structure.
authors: Zhensong
authors: Z
authors: Zhang
authors: Shouzhen
authors: S
authors: Yue
authors: Yukun
authors: Y
authors: Wu
authors: Pingrui
authors: P
authors: Yan
authors: Qingyang
authors: Q
authors: Wu
authors: Dalong
authors: D
authors: Qu
authors: Shiyong
authors: S
authors: Liu
authors: Yi
authors: Y
authors: Zhao