A module structure is provided, which includes a front sheet, a back sheet opposite the front sheet, and a solar cell disposed between the front sheet and the back sheet. A first encapsulate film is disposed between the solar cell and the front sheet, and a second encapsulate film disposed between the solar cell and the back sheet. One or both of the front sheet and the second sheet includes a support layer and a light conversion layer on the support layer, wherein the light conversion layer includes a fluorescent molecule and hydrogenated styrene elastomer resin. The light conversion layer is disposed between the support layer and the solar cell.