Metallization optimization for high efficiency silicon heterojunction solar cells using low-temperature paste screen printing
Metallization optimization for high efficiency silicon heterojunction solar cells using low-temperature paste screen printing
复制标题
使用低温浆料丝网印刷对高效硅异质结太阳能电池进行金属化优化
DOI：
10.1109/pvsc.2013.6744909
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Po
中科院分区：
文献类型：
--
作者：
Y. Chien;Ming;Jay Chang;John S. Q. Liu;Ya;Ming;Po
在Au Optronics（友达光电）的研发生产线上，硅异质结太阳能电池的效率已成功达到21%以上。性能的改善源于薄膜非晶硅层的良好钝化质量、精细的TCO形成以及优化的金属化工艺。本文重点介绍了低温导电浆料丝网印刷技术的进展。已经进行了广泛的努力来降低金属化的串联电阻。前金属网格阴影和电阻之间的权衡也得到了照顾。我们应用功率损耗计算来优化给定TCO薄层电阻的金属接触。友达光电的新测试显示，与旧测试相比，功率损耗减少了2.8%以上，相当于绝对效率提高了0.64%。
An efficiency over 21% for silicon heterojunction solar cells has been successfully achieved in the RD line at AU Optronics (AUO). The performance improvement is stemmed from good passivation quality of thin film amorphous silicon layers, refined TCO formation, together with the optimized metallization process. In this paper, we focus on the progress of the screen printing technology using low-temperature conductive paste. Extensive efforts have been taken to reduce the serial resistance of the metallization. The trade off between front metal grid shading and resistance is also taken care of. We applied power loss calculation to optimize the metal contacts for a given TCO sheet resistance. AUO's new test run shows more than 2.8% reduction of power loss, which equals 0.64% absolute efficiency gain compared to our old test run.