Author/Authors :
Andersson، نويسنده , , G and Brongersma، نويسنده , , H.H and Denier van der Gon، نويسنده , , A.W and van IJzendoorn، نويسنده , , L.J. and de Jong، نويسنده , , M.P and de Voigt، نويسنده , , M.J.A، نويسنده ,
Abstract :
We investigated the elemental composition of different layers of polymeric light-emitting diode (pLED) model structures. Of special concern have been poly-(3,4-ethylenedioxythiophene) (PEDOT)/polystyrenesulfonate (PSS) and poly-phenylenevinylene (PPV) films, which are used widely in pLEDs. We found halogen compounds as impurities: bromine in the PEDOT/PSS and chlorine in the PPV layer. It is argued that the presence of halogen containing compounds could be an important reason for the degradation of pLEDs.
Keywords :
Polymeric LEDs , conducting polymers , elemental analysis , Ion scattering spectroscopy (ISS) , Particle induced X-ray emission (PIXE)
