Does a 5 busbar SG-UEB combination improve solar cell efficiency?

The five-busbar SG–UEB combination results in efficiency above 20% for industrial-sized solar cell without an additional step or layer. The improvement in the cell efficiency obtained using the uneven busbar design is attributed not only to the decreased shading but also to reduced contact recombination underneath the busbars.

How efficient are three- and five-busbar solar cells?

The efficiency of the modeled three- and five-busbar solar cells as a function of s for the continuous gridlines and the gridlines with the optimal segmentation (with minor busbar width of 0.6 mm) As s is decreased from 1 to 0, the average busbar width shrinks due to the reduction in the total major busbar length.

What is the difference between busbar resistance and JSC in solar cells?

As s is varied from 0 to 1, for instance, the modeled busbar resistance only decreases from 0.044 to 0.012 Ω cm 2 for both the three- and five-busbar solar cells. However, the improvement in JSC is pronounced for all the solar cell designs as s is decreased from 1 to 0, as shown in Fig. 11.

Is gridline segmentation a low-cost pathway to industrial solar cells?

Gridline segmentation combined with an uneven busbar concept is investigated. This is a low-cost pathway to achieving industrial solar cells with energy conversion efficiency above 20% without any additional cost.

Does a three-busbar solar cell enhance JSC?

To further evaluate the enhancement in JSC as the average busbar width is decreased, the three-busbar solar cell is taken as an example to investigate the change in the front metal shadowing with s, as shown in Fig. 12.

What is the short-circuit current of three- and five-busbar solar cells?

The short-circuit current of the modeled three- and five-busbar solar cells plotted as a function of s for the continuous gridlines and the gridlines with the optimal segmentation (with a minor busbar width of 0.6 mm)