title: Efficient deep-blue organic light-emitting diodes using double-emitting layer.
abstract: Efficient deep-blue organic light-emitting diodes were demonstrated using 1,4-tetranaphthalene doped in double-emitting layers (D-EMLs) consisting of 2-methyl-9,10-di(2-naphthyl)anthracene and 4'-(dinaphthalen-2-yl)-1,1'-binaphthyl as blue hosts. The device with D-EML exhibits good confinement of holes and electrons, as well as a broad recombination zone. The optimized device showed a peak current efficiency of 3.67 cd/A, a peak external quantum efficiency of 3.97%, and Commission Internationale de L'Eclairage coordinates of (0.16, 0.10).
authors: Department of Information Display, Hongik University, Seoul 121-791, Korea.
authors: Ji Hoon
authors: JH
authors: Seo
authors: Bo Min
authors: BM
authors: Seo
authors: Seok Jae
authors: SJ
authors: Lee
authors: Kum Hee
authors: KH
authors: Lee
authors: Seung Soo
authors: SS
authors: Yoon
authors: Young Kwan
authors: YK
authors: Kim