J4 ›› 2010, Vol. 48 ›› Issue (05): 851-854.

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Effects of Phosphonate Polyfluorene as Electron Injection Layeron Electroluminescence of Polymer LightEmitting Diodes

NIU Xiaodi1, WANG Hongsu1, WANG Song2, LIU Jingbo1   

  1. 1. College of Quartermaster Technology, Jilin University, Changchun 130062, China； |2. State Key Laboratory ofTheoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130021, China
  • Received:2009-12-31 Online:2010-09-26 Published:2010-09-21
  • Contact: WANG Song E-mail:ws@jlu.edu.cn

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Abstract:

The authors fabricated polymer lightemitting diodes with high work function aluminum cathode based on a new alcoholsoluble polyfluorene with phosphonate groups in the side chains (PFEP) as an electron injection material. Compared with that of Ca/Al cathode, the performance of the PLEDs based on green polymer with this electron injection layer and Al cathode is enhanced. The driving voltages are lower and the lightemitting efficiency is increased to 15.8 cd/A.

Key words: polymer electroluminescence, polyfluorene, phosphonate, emitting device

CLC Number: 

  • O631.2
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