La1-xAlxF3 nanocomposites with different AlF3 doping ratios were synthesized using a dual-source electron beam co-evaporation technique to achieve amorphous La1-xAlxF3 coatings with low loss and tensile stress. We analyzed the evolution laws of optical constants, microstructures, film stress, and film loss of La1-xAlxF3 nanocomposites with the change of element content. When x ≥ 0.30, high-refractive-index nanocomposites La1-xAlxF3 demonstrated reduced absorption, integrated amorphous structure, and lower tensile stress. The nanocomposite exhibited superior performance with an excellent overall structure, as well as reduced tensile stress. Additionally, this material was employed to create a high-performance reflective film with a high reflectivity.
|