BACK SHEET FOR SOLAR CELL, AND SOLAR CELL INCLUDING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a back sheet for a solar cell having high light reflectance, excellent in partial discharge voltage, capable of being reduced in sheet thickness and excellent in adhesiveness to a sealing material.

SOLUTION: The back sheet for a solar cell includes a laminate comprising: an adhesive layer (2) containing 50-100% by weight of a thermoplastic resin and 0-50% by weight of an inorganic or organic filler; and a base material layer (1) containing 30-95% by weight of a polypropylene resin and 5-70% by weight of an inorganic or organic filler while being at least uniaxially stretched and having a porosity of 55% or less. The back sheet for a solar cell has a reflectance of light having a wavelength of 750 nm of 90% or more and a partial discharge voltage of 7.5 V/μm thickness or more.

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