首页    期刊浏览 2024年12月05日 星期四
登录注册

文章基本信息

  • 标题:Interlayer Engineering with Different Host Material Properties in Blue Phosphorescent Organic Light-Emitting Diodes
  • 本地全文:下载
  • 作者:Lee, Jong-Hee ; Lee, Jeong-Ik ; Lee, Joo-Won
  • 期刊名称:ETRI Journal
  • 印刷版ISSN:1225-6463
  • 电子版ISSN:2233-7326
  • 出版年度:2011
  • 卷号:33
  • 期号:1
  • 页码:32-38
  • DOI:10.4218/etrij.11.0110.0172
  • 语种:English
  • 出版社:Electronics and Telecommunications Research Institute
  • 摘要:We investigated the light-emitting performances of blue phosphorescent organic light-emitting diodes, known as PHOLEDs, by incorporating an N,N'-dicarbazolyl-3,5-benzen interlayer between the hole transporting layer and emitting layer (EML). We found that the effects of the introduced interlayer for triplet exciton confinement and hole/electron balance in the EML were exceptionally dependent on the host materials: 9-(4-tert-butylphenyl)-3,6-bis(triphenylsilyl)-9H-carbazole, 9-(4-tert-butylphenyl)-3,6-ditrityl-9H-carbazole, and 4,4'-bis-triphenylsilanyl-biphenyl. When an appropriate interlayer and host material were combined, the peak external quantum efficiency was greatly enhanced by over 21 times from 0.79% to 17.1%. Studies on the recombination zone using a series of host materials were also conducted.
  • 关键词:Organic light-emitting diodes (OLED);blue;phosphorescent;interlayer
国家哲学社会科学文献中心版权所有