光诱导镀改善太阳电池填充因子的研究

本文采用常规的太阳电池工艺制备了一批单晶硅电池片，退火后得到了填充因子迥异的结果。比较了光诱导镀前后电池参数尤其是串联电阻，并分析了光诱导镀提升填充因子的机理。利用扫描电镜（SEM）观察了去除体银后的微观结构，证明了差填充因子太阳电池在光诱导镀后填充因子的提高得益于烧结中形成的银晶粒的充分利用。文中还提出了将光诱导镀应用于接触电阻较大的电池，如纳米柱电池和径向结电池的可能性。

Improving poor fill factors for solar cells via light-induced plating

Silicon solar cells are prepared following the conventional fabrication processes, except for the metallization firing process. The cells are divided into two groups with higher and lower fill factors, respectively. After light-induced plating (LIP), the fill factors of the solar cells in both groups with different initial values reach the same level. Scanning electron microscope (SEM) images are taken under the bulk silver electrodes, which prove that the improvement for cells with a poor factor after LIP should benefit from sufficient exploitation of the high density silver crystals formed during the firing process. Moreover, the application of LIP to cells with poor electrode contact performance, such as nanowire cells and radial junction solar cells, is proposed.