| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a polyester resin sheet inexpensive and excellent in hydrolysis resistance and heat resistance for a solar cell, that improves electricity conversion efficiency of the solar cell by improving hydrolysis resistance and heat resistance and also improving concealing properties, and a solar cell using the same. <P>SOLUTION: This polyester resin sheet for the solar cell has a polyester resin layer formed by using one or more layers each having number average molecular weight of 18,500-40,000, and has one or more layers having 5-40 wt.% of titanium oxide in the polyester resin layer. In this polyester resin sheet for the solar cell, a light transmittance of a wavelength of 300-350 nm is 0.005-10%, a relative reflectance is not less than 80% and not more than 105%, apparent density is 1.37-1.65 g/cm<SP POS="POST">3</SP>, optical concentration is 0.55-3.50, and the optical density varies within 20% from a center value. <P>COPYRIGHT: (C)2012,JPO&INPIT |
