156mmx156mm multicrystalline solar cell 4w for solar home system
Dimension: 156mm×156mm±0.5mm
Wafer thickness : 200μm ± 30μm 180μm +30μm-40 μm
Cell: 220m±20m
Front:1.8mm Silver bus bars; Blue/others silicon nitride antireflection coating
Back: 3.0mm Silver bus bars; Full-surface aluminum BSF