(JP11026796-A)      Solar-cell module (1) is a photovoltaic device (2) sealed in a reinforcing sheet (5) with filler material (3). The sheet is uneven on its surface because of plastic deformation caused by the surface of the photo-voltaic device and at least partly uneveness of its own surface. Spaces caused by the uneveness are filled with the filler material. Also claimed is a process for producing a solar cell module by superposing at least a thermoplastic sheet and a photovoltaic device on a reinforcing sheet having uneveness on its surface and heating the thermoplastic sheet, photovoltaic device, and reinforcing sheet while removing air from the space between the two sheets and space between thermoplastic sheet and photovoltaic device to bring them in close contact to fix them to one another. Also claimed is a building material in which the photovoltaic device is sealed on a reinforcing sheet with the filler material and a process for producing the building material which is the same as that described for producing the solar cell module. Also claimed is an electricity generation system consisting of the solar cell module and an electric-power conversion system connected to it.    USE -   The solar cell module can be used as a building material and/or used in an electricity generating system.    ADVANTAGE -   Air is not trapped between the filler material and the reinforcing sheet when the photo-voltaic device is sealed and fixed on the reinforcing sheet. Consequently, there is no possibility of trapped air portions combining with time and impairing the appearance of the module or creating areas of moisture condensation impairing the electrical performance of the photo-voltaic device.    (US6075202-A)      Solar-cell module (1) is a photovoltaic device (2) sealed in a reinforcing sheet (5) with filler material (3). The sheet is uneven on its surface because of plastic deformation caused by the surface of the photo-voltaic device and at least partly uneveness of its own surface. Spaces caused by the uneveness are filled with the filler material. Also claimed is a process for producing a solar cell module by superposing at least a thermoplastic sheet and a photovoltaic device on a reinforcing sheet having uneveness on its surface and heating the thermoplastic sheet, photovoltaic device, and reinforcing sheet while removing air from the space between the two sheets and space between thermoplastic sheet and photovoltaic device to bring them in close contact to fix them to one another. Also claimed is a building material in which the photovoltaic device is sealed on a reinforcing sheet with the filler material and a process for producing the building material which is the same as that described for producing the solar cell module. Also claimed is an electricity generation system consisting of the solar cell module and an electric-power conversion system connected to it.    USE -   The solar cell module can be used as a building material and/or used in an electricity generating system.    ADVANTAGE -   Air is not trapped between the filler material and the reinforcing sheet when the photo-voltaic device is sealed and fixed on the reinforcing sheet. Consequently, there is no possibility of trapped air portions combining with time and impairing the appearance of the module or creating areas of moisture condensation impairing the electrical performance of the photo-voltaic device.