Screening of commercial bifacial glass/glass PERC mod-ules showed both PID-p on the rear with cells in 1500 V bias and to a lesser extent on the front with the cells in +1500 V bias. The occurrence of PID-polarization of bifacial PERC modules with their rated system voltage 1500 V applied in the eld was established.
PERC cells used M2 size (156.75 × 156.75 mm 2) wafer with 170 and 200 μ m as wafer and cell thickness, respectively. Cells were cut by laser scribing and mechanical cleaving (LSMC) technology ( Han et al., 2022 ). The module structure is the same as the conventional product in the PV industry.
With the increasing thickness of SiN x on the front surface, there will be a significant decrease in the efficiency of PERC solar cells. Fig. 8. Thickness importance ranking of PERC solar cells obtained from SHAP value. 4. Conclusion
Nowadays, industrially produced crystalline silicon (c-Si) PERC solar cells are typically in the thickness of 170–180 μm and have an average cell efficiency of 22% at this stage, but there has been continued research into how to further improve cell efficiency for the PERC cells with standard thickness [, , ].
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