公开(公告)号：JP2002026354A

公开(公告)日：2002-01-25

申请号：JP2000209438

申请日：2000-07-11

Applicant: TORAY INDUSTRIES

Inventor： MIYAJI SHINICHIRO ,  TAJIMA KOICHI

IPC: C08J7/04 ,  C08J5/18 ,  H01L31/04

Abstract: PROBLEM TO BE SOLVED: To provide a film for sealing the rear surface of a solar cell and a solar cell using the same by which environmental resistance such as hydrolysis resistance or weatherability, etc., can be improved by using a PET-BO that is inexpensive and has excellent mechanical characteristic and heat resistance, and high reflection rate advantageous for electric conversion of sunlight, reduction of leak current and lightweight be given. SOLUTION: This film for sealing the rear surface of a solar cell has a gas barrier layer compounded with a polyethylene terephthalate, and the polyethylene terephthalate is composed of polymer whose number-average molecular weight ranges 18500 to 4000 and its thickness is 7% or more of the total thickness of the film. The solar cell is featured in that a film sealing the rear surface is applied to the solar cell system.