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发明授权
CN108022672B 膏状组合物 有权

膏状组合物
摘要：
本发明提供一种膏状组合物，其可形成对PERC型太阳能电池单元等太阳能电池单元带来高转换效率及高短路电流值的电极。该膏状组合物至少含有铝颗粒及铝‑硅合金颗粒中的至少一种金属颗粒、玻璃粉末及有机媒介物，通过激光衍射散射法测定的体积基准的粒度分布曲线中，金属颗粒的最小粒径Dmin为1.5μm以上2.0μm以下，粒度分布曲线中，对应于50％点的中位粒径(D50)为4.0μm以上8.0μm以下，式(1)表示的D的值为0.7以上，D＝D50/(D90‑D10) (1)式(1)中，D50为中位粒径，D90为粒度分布曲线中对应于90％点的粒径，D10为粒度分布曲线中对应于10％点的粒径。
摘要（英）：

PROBLEM TO BE SOLVED: To provide a paste composition which enables the formation of such an electrode that achieves a high conversion efficiency and a high short-circuit current value in a solar battery cell, such as a PERC type solar battery cell.SOLUTION: A paste composition comprises at least metal particles of at least one kind of aluminum particles and aluminum-silicon alloy particles, glass powder, and an organic vehicle. In a particle size distribution curve measured by a laser diffractive scattering method, which is used for a volume reference, the metal particles are 1.5 to 2.0 μm in minimum particle size Dmin. As to the metal particles, a center particle size (D50) corresponding to cumulative 50% in the particle size distribution curve is 4.0 to 8.0 μm, and the D value represented by the following formula (1) is 0.7 or more: D=D50/(D90-D10) (1). (In the formula (1), D50 is the center particle size, D90 is a particle size corresponding to cumulative 90% in the particle size distribution curve, and D10 is a particle size corresponding to cumulative 10% in the particle size distribution curve.)SELECTED DRAWING: Figure 1

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