Amorphous Properties of Excimer Luminescence in Poly(N-vinylcarbazole) Films

Abstract

The emission properties of poly(N-vinylcarbazole) films have been investigated by the monochromatic light excitation at 4.2 K. The luminescence of the weakly bound excimer (the second excimer) shows the shift of the peak energy with varying the excitation energy. This phenomenon is interpreted as the amorphous properties of the carbazole chromophores of the polymer. It is elucidated that the excimer is the localized exciton relaxed by the inter-carbazole interaction at the excimer-forming site.