Patent ID: 8567110

Claim:
Sealing process of photovoltaic solar cells sensitized by dye comprising glass sheets that form a photoelectrode and a counter-electrode, wherein the process comprises the sequential steps of: i. placing the photoelectrode at a temperature high enough to ensure glass adhesion and low enough to ensure no damage occurs to the photoelectrode; ii. thereafter applying a glass precursor cord at an external perimeter of an inner part of the photoelectrode; iii. thereafter placing the photoelectrode and the counter-electrode at temperatures high enough to ensure glass adhesion and low enough to ensure no damage occurs to either the photoelectrode or the counter-electrode; and iv. thereafter welding the photoelectrode and the counter-electrode closed by using a laser beam, wherein the glass sheets of the photoelectrode and the counter-electrode are transparent to the laser beam wavelength used for welding.