Optical passivation film solar cell and its manufacturing method

An optical passivation film for a solar cell and a manufacturing method thereof, an optical film comprising a passivation Ti1-xAlxOy: Z, wherein Z represents a halogen, x is from 0.05 ~ 0.95, y is greater than 0. The manufacturing method includes preparing optical passivation film coating solution, wherein the coating comprises aluminum oxide precursor solution, titanium oxide precursor, and a solvent solution of a halogen. Placing the substrate in the step of heating the substrate to the heater. Spraying procedure to spray solution is sprayed onto the substrate to form the optical passivation film. The present invention further provides a use of the optical passivation film solar cell.