Performance Improvement of Polymer Light Emitting Diodes by Insertion of a Silane Layer

  • Lee, Jun-Yeob (Department of Polymer Science and Engineering, Dankook University, Member, KIDS)
  • Published : 2007.09.30


The influence of a silane layer on the performances of polymer light emitting diode(pLED)s has been studied. Glycidoxypropyltrimethoxysilane(GPS) with an epoxy functional group was used as a surface modifier for ITO substrates. The GPS layer was inserted between an ITO and a poly(3,4)-ethylenedioxythiophene/polystyrenesulfonate(PEDOT) by wet process and the performances of PLEDs were investigated. The introduction of GPS layer increased the brightness and efficiency of PLEDs by 30%. In addition, the lifetime of PLEDs was also improved considerably by using GPS as a surface modifier.


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