Author/Authors :
Jandke، نويسنده , , M and Strohriegl، نويسنده , , P and Gmeiner، نويسنده , , J and Brütting، نويسنده , , W and Schwoerer، نويسنده , , M، نويسنده ,
Abstract :
In this paper the rubbing-alignment of a poly(p-phenylenevinylene) (PPV) precusor polymer is described. Highly oriented films have been prepared leading to a dichroic ratio of 18 for photoluminescence corresponding to an order-parameter SPL=(PL∥−PL⊥)/(PL∥+PL⊥) of 0.9. Two-layer LEDs with the configuration ITO/PPV/Poly(phenylquinoxaline) (PPQ)/Al that have been fabricated show dichroic ratios for electroluminescence (EL∥/EL⊥) of 12 and a maximum brightness of 200 cd/m2.
Keywords :
electroluminescence , Rubbing alignment , Poly(p-phenylenevinylene) , Polarization
