156mm polycrystalline solar cell:
1. Power: 3.9W 2BB or 38BB
2. High effciency lower price
3. CE, RoHS
4. Voltage: 0.5V

Character of polysolar cell
1. Dimension 156mm*156mm± 0.5mm.
2. Wafer thickness 200± 30µ M.
3. Front(-): Two 2.0 wide busbars(silver)With Center distance 75mm.
4. Back(+): 4.0mm wide silver soldering pads aluminum back surface field.
5. Silicon nitrate antireflection coating
6. Both front and back use silver contact, Back surface field is aluminum.
7. Strictly quality testing
Automatically testing and sorting in 24 separate bins base on iec060904 criterion
100% strictly final testing for reverse current, shunt and series resistance

Efficiency Pmpp Umpp Impp Uoc Isc FF
17.40% 3.96 0.5092 7.72 0.6194 8.41 77.4
17.20% 3.91 0.5075 7.66 0.6165 8.37 77.28
17.00% 3.86 0.5049 7.6 0.6133 8.34 76.94
16.80% 3.81 0.5026 7.54 0.6127 8.19 76.24
16.60% 3.75 0.5002 7.52 0.6122 8.16 76.06
16.40% 3.71 0.4978 7.48 0.6117 8.13 75.92
16.20% 3.65 0.4943 7.42