高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (11): 1818.

• 研究快报 • 上一篇    下一篇

可溶性聚合物电致发光材料PDHPV的合成及单、双层发光二极管器件的发光性能比较

李晨曦1, 尹春1, 黄文强1, 印寿根1, 张会旗1, 何炳林1, 郑军2, 华玉林2   

  1. 1. 南开大学高分子化学研究所, 天津, 300071;
    2. 天津理工学院材料物理研究所
  • 收稿日期:1995-06-02 修回日期:1995-08-05 出版日期:1995-11-24 发布日期:1995-11-24
  • 通讯作者: 李晨曦,男,33岁,博士,副研究员.
  • 作者简介:李晨曦,男,33岁,博士,副研究员.
  • 基金资助:

    天津市自然科学基金

The Synthesis of PDHPV and Its Electroluminescent Characters

LI Chen-Xi1, YIN Chun1, HUANH Wen-Qiang1, YIN Shou-Gen1, ZHANG Hui-Qi1, HE Bing-Lin1, GAO Jun2, HUA Yu-Lin2   

  1. 1. Institute of Polymer Chemistry, Nankai University, Tianjin, 300071;
    2. Material Physics Institute, Tianjin Institute of Technology
  • Received:1995-06-02 Revised:1995-08-05 Online:1995-11-24 Published:1995-11-24

关键词: PDHPV共轭聚合物, 电致发光, 电子运输层, 空穴运输层

Abstract: A kind of soluble electroluminescent polymer poly(2,5-diheptoxy-1,4-phenylenevinylene)(PDHPV)was synthesized and its electroluminescence(FL)properties were investigated. Amilder condition in the synthesis of the MeO-precursor was found,i.e.MeOH-H2O mixed solvents can turn the sulfonium precursor into MeO-precursor at ambient temperature, Two kinds of devices were fabricated by drop coating: ITO/PDHPV/AL,ITO/PDHPV/Alq3/Al(Alq3:8-hydroxyquinoline aluminium).The luminescence spectra produced in these devices are essentially the same as that of the photoluminescence(PL)of PDHPV. The Alq3 layer acts as the electron-conducting, hole-blocking layer, The efficiency and brightness of the double-layer device was improved. Compared with the analogous double-layer device fabricated with PPV and Alq3: ITO/PPV/Alq3/Al, a strange phenomenon was observed, Alq3 instead of PPVemits light, this is due to the wider band gap of PPV (2.5 eV)than that of PDHPV(2.1 eV) which blocks the creaticn of the singlet excitons in the polymer layer. The band gap of PDHPV narrower than that of PPV makes the radiative decay occur in the PDHPV layer instead of Alq3 layer. The double-layer device has a betterstability.

Key words: PDHPV conjugated polymer, Electroluminescence, Electron-transporting layer, Hole-transporting layer

TrendMD: