SEALING MATERIAL FOR SEALING LASER, GLASS MEMBER WITH SEALING MATERIAL LAYER AND SOLAR CELL USING THE MEMBER AND METHOD FOR PRODUCING THE SOLAR CELL

摘要

PROBLEM TO BE SOLVED: To provide a sealing material for sealing a laser, capable of improving the seal reliability between glass substrates by relaxing the residual stress produced on the joint interface between the glass substrate and a sealing layer.

SOLUTION: The sealing material for sealing the laser contains: sealing glass comprising low melting point glass; a low-expansion filler of 5-25% mass ratio; a laser absorbing material of 1-10% mass ratio; and a hollow bead of 0.5-7% mass ratio. The sealing material is baked and stuck to a sealing area of the glass substrate 3 to form a sealing material layer 6. The sealing material-stuck glass substrate 3 is layered on the glass substrate 2 while interposing the sealing material layer 6 between them. The sealing material layer 6 is irradiated with a laser beam 7 and melted to seal the space between the glass substrates 2 and 3.

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