Ultrafast photoelectron spectroscopy of dye-doped organic films

Summary form only given. The electroluminescent organic material, tris(8-hydroxyquinoline)aluminum (Alq), is foremost in organic light emitting device (OLED) fabrication. Doping Alq with highly fluorescent dyes enhances the emission, and allows color tuning. Furthermore, DCM doped Alq films have been shown to lase at low photoexcitation thresholds, and have the potential for electrical pumping. These applications benefit from detailed understanding of the Alq-DCM excitation transfer, the recombination dynamics, and the energy gap values. Each of these properties were studied in the work.