First time LPE growth of Gd1−xLuxAlO3:Ce and Pr1−xLuxAlO3:Ce single crystalline films at x=0–1. Limitation conditions of LPE growth of perovskite films onto YAlO3 substrates were determined. Relation between compositions engineering and luminescent properties of films were studied. Gd3+–Ce3+ and Pr3+–Ce3+ energy transfer in perovskite films under study were investigated. Large influence of Pb2+ flux related dopant on the light yield of perovskite films was found.