| 摘要 |
PROBLEM TO BE SOLVED: To provide a waterproof sheet for solar cell having excellent workability, flexibility, mechanical characteristics, adhesion to a solar cell layer, and waterproofness, and preventing power generation capacity of a solar cell from lowering, and to provide a solar cell layer with such a waterproof sheet, and a waterproof structure.SOLUTION: A waterproof sheet for solar cell contains polyvinyl chloride having a polymerization degree of 300-1300 measured in accordance with JIS K6721, and the content of liquid plasticizer is 2 wt% or less. Preferably, the waterproof sheet for solar cell contains a plasticizer compatible with the polyvinyl chloride and has solid state at room temperature. Content of the solid state plasticizer of the waterproof sheet for solar cell is preferably 10-50 wt%. |
