【Product description】
Silicon Heterojunction Technology (HJT) is based on an emitter and back surface field (BSF) that are produced by low temperature growth of ultra-thin layers of amorphous silicon (a-Si:H) on both sides of very well cleaned monocrystalline silicon wafers, less than 160 μm in thickness, where electrons and holes are photogenerated.
Heterojunction technology (HJT) silicon solar cells have attracted a lot of attention because they can achieve high conversion efficiencies, up to 25%, while using low temperature processing, typically below 250 °C for the complete process. Low processing temperature allows handling of silicon wafers of less than 100 μm thick while maintaining a high yield.
【Process flow】
【Key features】
High Eff and high Voc
Low temperature coefficient 5-8% power output gain
Bifacial structures
【Technical Data】
TECHNICAL DATA AND DESIGN | TEMPERATURE COEFFICIENTS AND SOLDERABILITY | |||
Dimension | 210mm*210mm±0.25 | TkUoc (%/K) | -0.27 | |
Thickness | 150+20 μm/-10 μm | TkIsc (%/K) | +0.055 | |
Front | 12*0.06mm busbars (silver), 54 fingers (silver) | TkPMAX (%/K) | -0.26 | |
Back | 12*0.06mm busbars (silver)，74 fingers (silver) | Peel Strength Minimum | >1 N/mm | |
ELECTRICAL PARAMETERS at STC | |||||||
No. | Efficiency (%) | Pmpp (W) | Uoc (V) | Isc (A) | Umpp (V) | Impp (A) | FF (%) |
1 | 24.4 | 10.76 | 0.653 | 16.482 | 0.749 | 17.142 | 83.83 |
2 | 24.3 | 10.72 | 0.652 | 16.436 | 0.748 | 17.116 | 83.70 |
3 | 24.2 | 10.68 | 0.651 | 16.392 | 0.748 | 17.092 | 83.50 |
4 | 24.1 | 10.62 | 0.650 | 16.350 | 0.747 | 17.054 | 83.38 |
5 | 24.0 | 10.58 | 0.649 | 16.306 | 0.747 | 17.048 | 83.11 |
6 | 23.9 | 10.54 | 0.647 | 16.300 | 0.747 | 17.030 | 82.90 |
7 | 23.8 | 10.50 | 0.646 | 16.258 | 0.746 | 17.000 | 82.75 |
8 | 23.7 | 10.46 | 0.644 | 16.220 | 0.746 | 16.974 | 82.59 |
9 | 23.6 | 10.40 | 0.643 | 16.184 | 0.745 | 16.964 | 82.34 |
10 | 23.5 | 10.36 | 0.642 | 16.152 | 0.745 | 16.956 | 82.02 |
11 | 23.4 | 10.32 | 0.640 | 16.120 | 0.745 | 16.948 | 81.76 |
12 | 23.3 | 10.28 | 0.638 | 16.094 | 0.744 | 16.946 | 81.46 |
13 | 23.2 | 10.24 | 0.636 | 16.092 | 0.744 | 16.938 | 81.20 |
14 | 23.1 | 10.18 | 0.634 | 16.062 | 0.743 | 16.922 | 80.97 |
15 | 23.0 | 10.14 | 0.633 | 16.022 | 0.743 | 16.916 | 80.69 |
16 | 22.9 | 10.10 | 0.631 | 16.004 | 0.743 | 16.916 | 80.39 |
17 | 22.8 | 10.06 | 0.630 | 15.958 | 0.742 | 16.910 | 80.11 |
18 | 22.7 | 10.00 | 0.629 | 15.914 | 0.742 | 16.904 | 79.86 |
19 | 22.6 | 9.96 | 0.628 | 15.860 | 0.741 | 16.900 | 79.58 |
【Spectral Response】
【Intensity Depence】
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