Screen printed finger electrode with high aspect ratio by single printing for crystal Si solar cell using novel screen mask

We developed novel screen mask with repellent property to organic solvent containing in Ag paste to print finger electrode with high aspect ratio by single printing and to reduce bleeding caused by spreading the paste at the edge of electrode line. The average height of finger electrode is 40.6 μm and average width is 64.0 μm when using the mask with 40 μm thick emulsion layer composed of 30μm hard layer and 10μm soft layer. The designed opening for electrode is 60 μm.