Photodegradation of 8-hydroxyquinoline aluminum

摘要

The photodegradation of 8-hydroxyquinoline aluminum (Alq_3) films under UV irradiation was studied by means of X-ray photoelectron spectroscopy, nano-second fluorescence spectrophotometer, and photoluminescence spectra. Degradation in photoluminescent properties was significant in an air environment. These results indicated that water and oxygen participate in the photodegradation processes of Alq_3. Quartz glass, metal Al and Ag substrates influenced the degradation in photoluminescent properties of Alq3, but no changes in the absorption and PL spectra, and fluorescence decays of the irradiated Alq_3 were observed.