NOVELTY - The backsheet (100) comprises a weather-resistant layer (110) serving as an outmost layer, an insulating layer (120) for preventing an electric current generated by a photovoltaic member from leakage through the backsheet, a first adhesive layer (130) disposed between the weather-resistant layer and the insulating layer, a moisture-barrier layer disposed between the weather-resistant layer and the insulating layer, a second adhesive layer disposed on the insulating layer, and a tie layer disposed on the second adhesive layer.    USE - The backsheet is useful for a photovoltaic member of a photovoltaic module (claimed).    ADVANTAGE - The backsheet exhibits resistance to damage from impact and thermal shock, minimizes degradation from moisture, temperature and ultraviolet radiation, and can be simply manufactured with compact structure in an economical manner.    DETAILED DESCRIPTION - The backsheet (100) comprises a weather-resistant layer (110) serving as an outmost layer, an insulating layer (120) for preventing an electric current generated by a photovoltaic member from leakage through the backsheet, a first adhesive layer (130) disposed between the weather-resistant layer and the insulating layer, a moisture-barrier layer disposed between the weather-resistant layer and the insulating layer, a second adhesive layer disposed on the insulating layer, and a tie layer disposed on the second adhesive layer. The weather-resistant layer is placed in direct contact with the moisture-barrier layer, comprises a modifier consisting of a stabilizer, a pigment, a filler and a coupling agent, and has a thickness of greater than 25 mu m. The moisture-barrier layer has a thickness of 1-2000 mu m. The insulating layer has a thickness of greater than 0.05 mm. The second adhesive layer is situated on a side opposite to the first adhesive layer. An INDEPENDENT CLAIM is included for a photovoltaic module.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic view of a backsheet.    Backsheet (100)    Weather-resistant layer (110)    Insulating layer (120)    First adhesive layer. (130)