How does IBC solar cell fabrication work?

However, IBC solar cell fabrication involves complex patterning steps for the interdigitated rear structure. Furthermore, since both contacts are on the rear side, the fabrication process must ensure low recombination at the surfaces.

How efficient is IBC c-Si solar cell?

In that case, IBC c-Si solar cell based on the low temperature self-aligned process with a value of 41 and an overall cell efficiency of 20.2% was demonstrated. This work was carried with a subsidy from the Dutch Ministry of Economic Affairs under the EOS-LT program (Project No. ).

What is a digitated Back Contact (IBC) solar cell?

Due to the interdigitated back contact (IBC) solar cell design, no optical shading occurs at the front side of the cell comparing to the standard front / rear contacted cell design, which has current loss due to the front metal grid , . With the hetero-junction IBC structure, a record cell efficiency of 25.6% was achieved .

Can a Sio stack passivate the whole BS of an IBC solar cell?

Notice that the SiO stack resulted in similar reasonable passivation properties on both emitter and BSF; thus it is an ideal candidate to passivate the whole BS of our IBC solar cell. , measured ECV doping profiles of the B doped epitaxial layer as grown and after annealing / oxidation at 850 ambient are reported.

Does IBC solar cell process flow induce shunting?

FSF implanted with a lower energy and passivated by ~15-nm thick thermal-SiO 2 and 65-nm thick PECVD-SiN x. Table 3 reports the performance of IBC solar cells with different front side structures and passivation stacks. The high pFF, generally higher than 83%, indicates that our IBC solar cell process flow does not induce shunting.

Are IBC solar cells economically viable?

Though the highest efficiency solar cells are realized on IBC cell structure, making them industrially viable is challenging. In this work, the process sequence for obtaining cost-effective IBC solar cells was studied. We investigate boron-doped emitter and phosphorus-doped FSF formation APCVD BSG and PSG layers, respectively.