| 摘要 |
The present invention relates to an aluminum paste composition for forming a back surface magnetic field on the back surface of a silicon solar battery, in which a high-efficiency characteristic is achieved by ameliorating the phenomenon of the bowing of a solar battery cell, which occurs when glass compositions and ceramic additives are added to aluminum powder. The aluminum paste composition of the present invention consists of 60 to 90 wt % of aluminum powder, 1 to 10 wt % of a binder resin, 0.1 to 10 wt % of a lead-free glass additive, and 0.1 to 10 wt % of a ceramic additive, wherein the composition comprises 60 to 90 wt % of conductive materials provided in one or more different sizes. According to the present invention, the bowing characteristic of the solar battery cell can be ameliorated, thereby preventing a decrease in yield caused by damage to the solar battery cell during the production and handling of the solar battery. Further, the internal stress of the solar battery cell can be reduced due to the amelioration of the bowing, thereby improving the efficiency of the solar battery. |
