Interdigitated Back Contact, or IBC, technology allows for a high efficiency of no less than 21.6%, which is a significant improvement over traditional solar panels. Belinus PV modules come with a 35-year all-inclusive warranty, which is one of the longest in the industry.
The IBC technology used in Belinus’ solar panels is unique in several ways. First, it moves all front contact grids to the back of the panel, which reduces shading at the front of the cell, leading to higher efficiency. IBC cells also have a lower series resistance, due to larger back contacts, allowing for easier connection and for the cells to be placed closer together in the module. Additionally, the optical and electrical optimization are independent of each other in IBC cells, so the panel’s appearance can be improved while maintaining high efficiency.
However, the production process of IBC cells is more complicated than traditional solar cells, which is the main disadvantage of this technology. High-quality and long-life silicon wafers must be used in production, and the alignment of the n- and p- areas at the rear of the wafer is also more complex. The manufacturing process requires advanced cleaning procedures and contamination checks, which add to the production costs.
