| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a polyester film for an amorphous silicon solar battery board which polyester film is mainly made of a polyethylene naphthalene decarboxylate and is preferable to a board for a flexible type amorphous silicon solar battery showing high energy conversion efficiency. <P>SOLUTION: The biaxil polyester film for the amorphous silicon solar battery board is a biaxial orientation film containing a base material layer mainly made of a polyethylene naphthalene decarboxylate. The film shows full light transmissivity exceeding 85%, heat absorption rate of 0.1 to 1.0% in both longitudinal and latitudinal directions under heat treatment for 10 minutes at 200°C, and the absolute value of a difference between longitudinal heat absorption rate and latitudinal heat absorption rate of 0.4% or less. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
