产品介绍(Introduction)

SA-6070铝浆是光-伏电池背场专用浆料，该浆料经热处理后能与硅形成良好的欧姆接触，即与硅形成合金，具有附着力强、导电性好、电极表面均匀致密、不起庖、电池转换效率高等优点。该浆料可与SA-6071银铝浆和SA-5071银浆配套使用，采用一次烧结，提高生产效率，降低生产成本。

SA-6070 Al Paste is used for BSF(back surface field) of Si solar cells. This paste can form Al-Si alloy by annealing and get an excellent ohmic contact with Silicon wafers with some characteristics such as strong adherence, good conductivity, and homogeneous thick layer. The BSF made by SA-6070 results a higher solar cell efficiency. This paste can also be used together with SA-6071 Ag-Al paste and SA-5071 silver paste and co-fired. So, the productivity would be increased and the cost would be reduced.

技术参数(Specifications)

使用方法(Process)

丝网(Screen printing)：250目(250 mesh)

烘干温度(Drying): 150℃/15min

烧结工艺(Firing conditions)：

温度(Temperature)：750-850℃

      处理时间(Annealing time)：5-20s

      升温速度(Increasing speed)：5℃/s

      降温速度(Cooling rate)：8℃/s