| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a polyester film for a solar cell back surface protection film for a thin film silicon solar cell, which has superior durability under high temperature and high humidity, and in the presence of light irradiation. <P>SOLUTION: The polyester film for the solar cell back surface protection film is characterized in that: whiteness is 50 or greater; 3-50 mass% of microparticles consisting principally of a rutile type, the mean particle size of which is 0.1-3μm, are contained; and a film acid value is at least 1 to 30 (eq/ton). <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
