title: Contrast and efficiency enhancement in organic light-emitting devices utilizing high absorption and high charge mobility organic layers.
abstract: Organic light-emitting devices utilizing copper phthalocyanine (CuPc) and C(60) as the hole- and electron-injection layers were reported. Compared with a conventional device without CuPc and C(60) layers, the improvement of the contrast is more than 100% under 140-lx ambient lighting at a brightness of 300 cd/m(2). A maximum current efficiency of 3.93 cd/A, which is higher than 3.62 cd/A for a conventional device, was obtained at 9 V. The device has a maximum luminance of 17170 cd/m(2) at 15 V. The high contrast and high efficiency of the device are attributed to the high absorption and high charge mobility of CuPc and C(60) films.
authors.forename: W F
authors.initials: WF
authors.lastname: Xie
authors.forename: Y
authors.initials: Y
authors.lastname: Zhao
authors.forename: C N
authors.initials: CN
authors.lastname: Li
authors.forename: S Y
authors.initials: SY
authors.lastname: Liu