Optoelectronic processes in pi-conjugated oligomers and polymers

Based upon Monte-Carlo simulations, analytic theory, and experiment a hoppi ng concept for charge injection into random organic a-functional dielectric s is been developed and tested. The treatment is flexible enough to include interfacial properties and to incorporate space charge limited current flo w. A hopping concept has also been employed to analyse experimental data on the hole mobility in conjugated polymers. The time response of LEDs, thoug h more complicated, can be rationalized in terms of self-consistent analyti c theory. It has been applied to tunneling controlled time dependent electr oluminescence in a bilayer LED.