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String Ribbon Solar Cells

- Jan 22, 2018 -

String Ribbon Solar Cells

String Ribbon solar panels are also made out of polycrystalline silicon. String Ribbon is the name of a manufacturing technology that produces a form of polycrystalline silicon. Temperature-resistant wires are pulled through molten silicon, which results in very thin silicon ribbons. Solar panels made with this technology looks similar to traditional polycrystalline solar panels.

Evergreen Solar was the main manufacturer of solar panels using the String Ribbon technology. The company is now bankrupt, rendering the future for String Ribbon solar panels unclear.


The manufacturing of String Ribbon solar panels only uses half the amount silicon as monocrystalline manufacturing. This contributes to lower costs.



The manufacturing of String Ribbon solar panels is significantly more energy extensive and more costly.

Efficiency is at best on par with the low-end polycrystalline solar panels at around 13-14%. In research laboratories, researchers have pushed the efficiency of String Ribbon solar cells as high as 18.3%.[3]

String Ribbon solar panels have the lowest space-efficiency of any of the main types of crystalline-based solar panels.

Previous: Thin-Film Solar Cells Next: Polycrystalline Silicon Solar Cells

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