Abstract
The work demonstrates the synthesis of thin films of β-(AlxGa1–x)2O3 by spray pyrolysis method. Temperature conditions for sol synthesis are determined to obtain thin films with a specified content of aluminum. The films are studied by scanning electron microscopy, energy-dispersive X-ray spectroscopy and optical spectroscopy. The aluminum content in the fabricated β-(AlxGa1–x)2O3 films is about 3.6 at.%. The optical band gap of the films is determined as 5.0 eV.