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Abstract
Amorphous tris(8-hydroxyquinoline) aluminium (Alq3) thin films were deposited on fused silica substrates by thermal evaporation. Optical absorption, emission and excitation spectra were measured at room temperature and, for the first time, at 80 K, on an Alq3 film in a spectral range extending from the near ultraviolet to the visible. Spectroscopic features were carefully investigated as a function of temperature.