Title :
Ultrafast photoelectron spectroscopy of dye-doped organic films
Author :
Read, K. ; Karlsson, H.S. ; Kapteyn, H.C. ; Murnane, Margaret M. ; Haight, R.
Author_Institution :
Michigan Univ., Ann Arbor, MI, USA
Abstract :
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.
Keywords :
dye lasers; dyes; high-speed optical techniques; optical films; optical materials; organic compounds; photoexcitation; stimulated emission; thin films; time of flight spectra; ultraviolet photoelectron spectra; 1 mJ; 26.7 eV; 395 nm; 500 Hz; 790 nm; 90 fs; Al/sub 2/O/sub 3/:Ti; DCM; DCM dye doped tris(8-hydroxyquinoline)aluminum; color tuning; dye-doped organic films; electrical pumping; electroluminescent organic material; emission; energy gap values; excitation transfer; highly fluorescent dyes; organic light emitting device fabrication; photoexcitation thresholds; recombination dynamics; tris(8-hydroxyquinoline)aluminum; ultrafast photoelectron spectroscopy; Delay; Electrons; Energy exchange; Excitons; Physics; Radiative recombination; Semiconductor diodes; Solids; Spectroscopy; Spontaneous emission;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2000. (QELS 2000). Technical Digest
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
1-55752-608-7
