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| Home >> Technologies/Quality |
LONGi is committed to innovative technologies. From the founder to our current management team, they all consistently pursue new technologies. From the patented poly carbon-ends upgrading method to the improved pulling techniques for high efficiency solar cells, we work hard to maximize the value and efficiency of the production ch... |
| MCZ Pulling Method |
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MCZ method is to generate a strong magnetic force (over 1000 Gauss) around the crystal puller during CZ growth. This will constrain the diffusion of impurities in melting of silicon; as a result the impurity distribution will be very improved. It also significantly reduces oxygen concentration leading to a good lifetime performance. Experimental results show that MCZ method can provide high quality silicon crystal with low oxygen concentration, uniform distribution of doping and good thermal stability. Degradation effect of MCZ cells is significantly reduced. | |
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| Poly Carbon-Ends Upgrading Technology |
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LONGi is now one of the leading service providers for off-grade poly upgrading. For many years LONGi has expanded its expertise of silicon recycling from off-spec poly products to any recyclables throughout the supplying chain. In particular, we provide comprehensive solution to recycle poly chunks (carbon-ends, high impurities, surface contaminated, etc.) and granules (FBR), help poly factories increase their production output. |
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