| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a protective sheet for solar cell, the protective sheet having optical transparency in a necessary wavelength region, and reflecting light in an unnecessary wavelength region, and exhibiting excellent moisture-proof properties and weather resistance. <P>SOLUTION: A protective sheet for solar cell including a cholesteric liquid crystal polymer layer, a transparent base material, and a fluororesin layer has a steam permeability of 0.005 g/m<SP POS="POST">2</SP>day or lower. The protective sheet for solar cell has a maximum optical reflectance for incident light at a predetermined maximum reflection wavelength, and the optical reflectance at the predetermined maximum reflection wavelength is 40% or higher. Thickness of the cholesteric liquid crystal polymer layer is equal to or larger than 1.5 times of the maximum reflection wavelength of the protective sheet for solar cell. <P>COPYRIGHT: (C)2013,JPO&INPIT |
