Method for preparing front face electrode silver paste of single crystalline silicon solar cell

一种单晶硅太阳能电池正面电极银浆的制备方法

Abstract

The invention provides a method for preparing front face electrode silver paste of a single crystalline silicon solar cell, and belongs to the technical field of manufacturing of solar cells. The method includes the following steps that first, magnesium sulfate, ammonium phosphate, copper sulfate, sodium tetraborate, zinc oxide, silver oxide, titanium oxide and silicon oxide are taken to be smelted for 45-60min, then the fusant is placed into water for quenching, afterwards, block-shaped materials generated through quenching are smashed to be below 200 meshes, and accordingly powder I is obtained; second, the powder I is evenly mixed with carbon powder, then the mixture is sintered for 2-3h in a muffle furnace under 1100-1200 DEG C, the mixture is cooled and then taken out, and powder II is obtained; third, the powder II is ground to be powder with the average grain diameter being 3-6 microns, and powder III is obtained; fourth, the powder III is evenly mixed with silver powder, organic solvent and dispersant, so that silver paste is obtained. According to the front face electrode silver paste of the single crystalline silicon solar cell, modified glass powder is added into the silver paste, and the resistance of the silver paste is lowered.
本发明提供了一种太阳能电池用银浆的制备方法,属于太阳能电池制造技术领域。包括如下步骤:第1步,取硫酸镁、磷酸铵、硫酸铜、四硼酸钠、氧化锌、氧化银、氧化钛、氧化硅,熔炼45~60min,然后将融熔物放入水中淬火,再将淬火产生的块状物粉碎至200目以下,得到粉体I;第2步,将粉体I与碳粉混合均匀,再在1100~1200℃下于马弗炉中烧结2~3h,放冷后,取出,得到粉体II;第3步,将粉体II研磨至平均粒径在3~6微米,得到粉体III;第4步,将粉体III与银粉、有机溶剂、分散剂混合均匀,即得银浆。本发明提供的单晶硅太阳能电池正面电极银浆,通过在银浆中加入改性玻璃粉,使银浆的电阻降低。

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Cited By (2)

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    CN-104575681-AApril 29, 2015安徽凤阳德诚科技有限公司Conducting silver paste with cobalt powder