Method for fabricating concentrated solar cell chip without edge current leakage

摘要

A method for fabricating a concentrated solar cell chip without edge current leakage is provide, including: forming a sloped sidewall groove along a dicing street of a cell chip by a precise cutting method using a cutting blade having sloping sides, such that sidewalls of the formed groove are sloping; performing chemical polishing the sloped sidewalls of the groove; forming insulating materials, which serves as an anti-reflection layer, over a surface of the cell chip, and passivating the surface to prevent current leakage; cutting through the cell chip by using a conventional blade to separate solar cell chips into individual dice, such conventional blade having a width that is smaller than the width of the precise sloped sidewall cutting blade.