Lanthanum aluminate (LaxAl1−xOy; LAO) films doped with europium were deposited on a glass substrate by Ultrasonic Spray Pyrolysis technique. Like precursor solution was used 0.04M lanthanum nitrate and 0.04M aluminum nitrate in de-ionized water, and from europium nitrate was aggregated europium to 6%mol respect to LaO. The aluminum incorporated to rare earth oxides shows a high hydration resistance, therefore the films show stability in their luminescent properties. In this work the optical and morphological properties of the films are reported in the 350–600°C deposition range. The photoluminescent emission spectra show the characteristic peaks of the Eu3+ ion transitions: 5D0 → 7F0 (565 nm), 5D0→7F1 (596 nm), 5D0–7F2 at 615 nm and 623 nm, 5D0→7F3 (660 nm) and 5D0→7F4 (715 nm) for an excitation wavelength of 270 nm.