中国物理B ›› 2017, Vol. 26 ›› Issue (9): 98507-098507.doi: 10.1088/1674-1056/26/9/098507
• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇 下一篇
Jian Gao(高建), Qian-Qian Yu(于倩倩), Juan Zhang(张娟), Yang Liu(刘洋), Ruo-Fei Jia(贾若飞), Jun Han(韩俊), Xiao-Ming Wu(吴晓明), Yu-Lin Hua(华玉林), Shou-Gen Yin(印寿根)
Jian Gao(高建)1,2,3, Qian-Qian Yu(于倩倩)1,2,3, Juan Zhang(张娟)1,2,3, Yang Liu(刘洋)1,2,3, Ruo-Fei Jia(贾若飞)1,2,3, Jun Han(韩俊)1,2,3, Xiao-Ming Wu(吴晓明)1,2,3, Yu-Lin Hua(华玉林)1,2,3, Shou-Gen Yin(印寿根)1,2,3
摘要:
We chose pentacene as a hole injection layer (HIL) to fabricate the high performance blue fluorescent organic light-emitting devices (OLEDs). We found that the carrier mobility of the pentacene thin films could be efficiently improved after a critical annealing at temperature 120 °C. Then we performed the tests of scanning electron microscopy, atomic force microscopy, and Kelvin probe to explore the effect of annealing on the pentacene films. The pentacene film exhibited a more crystalline form with better continuities and smoothness after annealing. The optimal device with 120 ℃ annealed pentacene film and n-doped electron transport layer (ETL) presents a low turn-on voltage of 2.6 V and a highest luminance of 134800 cd/m2 at 12 V, which are reduced by 26% and improved by 50% compared with those of the control device.
中图分类号: (Light-emitting devices)