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Light emitting devices based on a bifunctional block copolymer containing crown ether spacers

  • Qingjiang Sun
  • , Chunhe Yang
  • , Jin Zhai
  • , Lei Jiang
  • , Yongfang Li*
  • , Haiqiao Wang
  • *此作品的通讯作者

科研成果: 期刊稿件会议文章同行评审

摘要

Polymer light emitting diodes (LEDs) and light-emitting electrochemical cells (LECs) were demonstrated with a block copolymer, poly(dibenzo-24-crown-8-co-2,5-dimethoxy-1,4-divinyl benzene) (CE-DMVB), as the luminescent polymer. The LEDs with Al cathode show a turn-on voltage of 7 V, with an electroluminescenc (EL) efficiency of 0.017 cd/A. Light emission was observed in both forward and reverse bias modes for LECs. AFM studies display the improved morphology of emissive layers in LECs, which accounts for the fast response of these devices. Upon addition of poly(ethylene oxide) (PEO), LECs exhibit the turn-on voltage of 2.7 V, with the EL efficiency up to 3.7 cd/A.

源语言英语
页(从-至)1089-1090
页数2
期刊Synthetic Metals
137
1-3
DOI
出版状态已出版 - 4 4月 2003
已对外发布
活动ICSM 2002 - Shanghai, 中国
期限: 29 6月 20025 7月 2002

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