Technical FAQs 4

What is a back contact solar cell?

These lines are actually the front contacts that collect the electricity generated by the panel. Now, imagine a solar cell without these lines on the front. This is what we call a Back Contact (BC) solar cell. In BC solar cells, all the electrical contacts are moved to the back of the cell, allowing the front to capture more sunlight.

How efficient are back-contact solar cells?

Back-contact solar cells, known for high efficiency and compatibility, have led efficiency rankings since SunPower’s 20.3% record in 2007 using interdigitated back contact (IBC) technology. BC technology has achieved eight consecutive world records i

How do IBC solar cells work?

IBC solar cells leverage advanced Interdigitated Back Contact technology, positioning all contacts on the rear side of the cell. This innovative design eliminates shading on the front surface, significantly reducing current losses and achieving exceptional energy conversion efficiency.

How do solar panels work?

Traditional solar panels have metal lines on the front that you can see. These lines block some sunlight from reaching the solar cell. ABC and HPBC technologies move all these electrical connections to the back of the panel. This means: Always compare module efficiency when shopping, as that’s what you actually buy and install.

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Solar panel with solar cells on the back

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Rear Contact Solar Cell

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