The photo-bleaching effects of selective ultraviolet and blue light illumination on the photoluminescence spectra of thermally evaporated tris(8-hydroxy-quinoline) aluminum (Alq(3)) thin films exposed in air were investigated by fluorescence spectroscopy and advanced optical imaging techniques. The photoluminescence intensity time behavior observed in the Alq(3) films at different excitation powers allows to establish that Alq(3) molecules in their exciting state are involved in these complex phenomena. The photo-bleaching processes were exploited for direct laser patterning of the investigated Alq(3) thin films
Bonfigli, F., Brogioli, D., Vincenti, M., Montereali, R. (2011). Optical investigation of photo-bleaching effects in organic Alq(3) thin films. JOURNAL OF OPTICAL TECHNOLOGY, 78(7), 419-423 [10.1364/JOT.78.000419].
Optical investigation of photo-bleaching effects in organic Alq(3) thin films
BROGIOLI, DORIANO COSTANTINO;
2011
Abstract
The photo-bleaching effects of selective ultraviolet and blue light illumination on the photoluminescence spectra of thermally evaporated tris(8-hydroxy-quinoline) aluminum (Alq(3)) thin films exposed in air were investigated by fluorescence spectroscopy and advanced optical imaging techniques. The photoluminescence intensity time behavior observed in the Alq(3) films at different excitation powers allows to establish that Alq(3) molecules in their exciting state are involved in these complex phenomena. The photo-bleaching processes were exploited for direct laser patterning of the investigated Alq(3) thin films
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