TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Compound: Polysilazane is perhydropolysilazane. Preferred Property: Silica film has a thickness of 0.01-15 mum. The silica film has ultraviolet absorption property. The resin base material has heat resistance temperature more than 65degreesC and glass transition temperature more than 70degreesC. Preferred Base Material: The base material is a resin such as polymethylmethacrylate resin, polycarbonate resin, amorphous polyolefin type resin or polyester type resin. Preferred Coating body: The coating body is a base material for vacuum film formings which interrupt discharge of out gas component and function as a passive film. The base material consists of water absorbent, moisture and oxygen permeable resin film or an oligomer. Alternately, the coating body is a base material for film formings which restrains the dimensional accuracy and heat deformation of the base material. The silica film or other functional film is maintained flat in normal pressure or in vacuum. Preferred Composition: The silica film contains inorganic microparticle such as zinc oxide and/or ultraviolet ray fluorescence transformation property organic compound or an organometallic complex molecule having ultraviolet absorption property. Preferred Method: The silica film is laminated with an organic ultraviolet absorber containing resin coating layer or ultraviolet absorption polymer coating layer. Preferred Arrangement: The silica film is formed on one or both sides of the base material. The base material containing silica film on one surface is provided as a protection layer on the solar battery module through a buffer adhesive layer provided on the other surface of the base material. The protection member is provided at least in the light-receiving surface side. One of the battery module has an insulating flat film or a non-translatable film. The insulating flat film is formed by providing silica film on one or both sides of a stainless steel group metal. The non-translatable film is formed by providing silica film on one or both sides of a soda glass.