Patent ID: 8263899
Filing Date: 2012-09-11
Classification: B23K,H01L,Y02E

Abstract:
1. A method of fabricating a solar cell, the method comprising: generating a laser beam from a single laser source; splitting the laser beam along a first laser beam path and a second laser beam path; in a first scanning step, directing the laser beam along the first laser beam path to scan on the first wafer in the first station in accordance with a first pattern; moving the first wafer from the first station to a second station, and a second wafer to the first station; in a second scanning step after the first scanning step and after moving the first and second wafers, directing the laser beam along the second laser beam path to scan on the first wafer in the second station in accordance with a second pattern, the second pattern being a mirror image of the first pattern, and directing the laser beam along the first laser beam path to scan on the second wafer in accordance with the first pattern, the scanning on the first and second wafers being performed substantially simultaneously.