中国物理B ›› 2008, Vol. 17 ›› Issue (7): 2725-2729.doi: 10.1088/1674-1056/17/7/062

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The performance enhancement in organic light-emitting diode using a semicrystalline composite for hole injection

秦大山1, 关敏2, 曹峻松3, 曹国华4, 曾一平4, 李晋闽4   

  1. (1)Institute of Polymer Science and Engineering, Hebei University of Technology, Tianjin 300130, China; (2)Novel Materials Laboratory, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China; (3)Novel Materials Laboratory, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China; (4)Novel Materials Laboratory, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
  • 收稿日期:2008-01-03 修回日期:2008-01-24 出版日期:2008-07-09 发布日期:2008-07-09
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 60606025).

The performance enhancement in organic light-emitting diode using a semicrystalline composite for hole injection

Cao Jun-Song(曹峻松)a), Guan Min(关敏)a)†, Cao Guo-Hua(曹国华)a),Zeng Yi-Ping(曾一平)a)‡, Li Jin-Min(李晋闽)a), and Qin Da-Shan(秦大山)b)   

  1. a Novel Materials Laboratory, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China; b Institute of Polymer Science and Engineering, Hebei University of Technology, Tianjin 300130, China
  • Received:2008-01-03 Revised:2008-01-24 Online:2008-07-09 Published:2008-07-09
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 60606025).

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摘要： A semicrystalline composite, 3, 4, 9, 10 perylenetetracarboxylic dianhydride (PTCDA) doped N,N'-di(1-naphthyl)-N,N'-diphenylbenzidine (NPB), has been fabricated and characterized. An organic light-emitting diode using such a composite in hole injection exhibits the improved performance as compared with the reference device using neat NPB in hole injection. For example, at a luminance of 2000 cd/m$^{2}$, the former device gives a current efficiency of 2.0cd/A, higher than 1.6cd/A obtained from the latter device. Furthermore, the semicrystalline composite has been shown thermally to be more stable than the neat NPB thin film, which is useful for making organic light emitting diodes with a prolonged lifetime.

关键词: semicrystalline composite, hole injection, organic light-emitting diode

Abstract: A semicrystalline composite, 3, 4, 9, 10 perylenetetracarboxylic dianhydride (PTCDA) doped N,N'-di(1-naphthyl)-N,N'-diphenylbenzidine (NPB), has been fabricated and characterized. An organic light-emitting diode using such a composite in hole injection exhibits the improved performance as compared with the reference device using neat NPB in hole injection. For example, at a luminance of 2000 cd/m$^{2}$, the former device gives a current efficiency of 2.0cd/A, higher than 1.6cd/A obtained from the latter device. Furthermore, the semicrystalline composite has been shown thermally to be more stable than the neat NPB thin film, which is useful for making organic light emitting diodes with a prolonged lifetime.

Key words: semicrystalline composite, hole injection, organic light-emitting diode

中图分类号:  (Light-emitting devices)

  • 85.60.Jb
72.20.Jv (Charge carriers: generation, recombination, lifetime, and trapping) 72.80.Le (Polymers; organic compounds (including organic semiconductors)) 81.20.-n (Methods of materials synthesis and materials processing)