Abstract: Two different methods of acid-base composite catalyzed were introduced, the transmittance, surface morphology and hardness of the antireflection coating were compared.The first method is adding HCl to prepare the film, compared with the film prepared by acid catalysis, the transmittance is improved, but the film surface is not uniform, which affects the light transmittance.The second method is the drop of acid sol preparation film, its high transmittance, large film hardness, and the surface of the film is even.The structure and surface morphology of the prepared films were characterized by IR, XRD and SEM.The results show that the films obtained by dropping acid sol are more stable and have the best transmittance and strength.

Key words: glass;silica sol;acid-base composite catalyzed;transmittance