© 2011 г. F. Bonfigli, doctor; D. Brogioli, doctor; M.A. Vincenti, doctor; R.M. Montereali, doctor
ENEA, UTAPRAD-MNF, Photonic Micro and Nanostructures Laboratory, Frascati, Rome, Italy
E-mail: rosa.montereali@enea.it
The photo-bleaching effects of selective ultraviolet and blue light illumination on the photoluminescence spectra of thermally evaporated tris(8-hydroxy-quinoline) aluminum (Alq3) thin films exposed in air were investigated by fluorescence spectroscopyand advanced optical imaging techniques. The photoluminescence intensity time behavior observed in the Alq3 films at different excitation powers allows to establish that Alq3 molecules in their exciting state are involved in these complex phenomena. The photobleaching processes were exploited for direct laser patterning of the investigated Alq3thin films.
Key words: organic light-emitting materials, Alq3, photoluminescence, thin films, laser patterning.
УДК 541.64
OCIS codes: 160.4890, 180.2520,
300.6280, 310.0310, 350.3850
Submitted February 24, 2011
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