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US 2012/0183792 A1Published application
Polyester film for solar cells
AssigneeToyo Boseki Kabushiki Kaisha
InventorsNaoki Mizuno, Mutsuo Nishi, Jun Inagaki
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Abstract
The invention provides a polyester film suitable for a back sheet for solar cells, which requires a high reflectance not only in the visible light region but also in the near-infrared region, and also requires a low reflection directivity. The polyester film is a cavity-containing polyester film having≈an average reflectance of 70-95% in a wavelength range of 400-1200 nm and an average transmittance of 5-30% in a wavelength range of 700-1200 nm.
Claims12
A polyester film for solar cells comprising
- a cavity-containing polyester film having:
- an average reflectance of 70% or greater and 95% or less in a wavelength range of from 400 to 1200 nm;
- and
- an average transmittance of 5% or greater and 30% or less in a wavelength range of from 700 to 1200 nm.
1 more element
Dependencies are inferred from the claim text.