DAQO GROUP



Polysilicon

The product quality has achieved international advanced level, and the purity is above 9N.

Size Specification

>3mm and <200 mm (≥85% by weight inthe range of 25 – 200 mm)  

 

Quality Assurance andPackaging   

All parameters are tested for everyproduction lot. We ensure that our products are 100% traceable. Products to be packaged in polyethylene bags in 5KG per bag and 20KG per carton box.


ParameterEG First GradeSG First GradeSG Second GradeTest Method
N-type/Resistivity(Ω-cm)≥500≥100≥404-Pts
phosphorus content<0.3≤1.5≤3.76LT-FTIR
P-type/Resistivity(Ω-cm)≥3000≥500≥2004-Pts
Boron content(ppba)<0.1≤0.5≤1.3LT-FTIR
Carbon content(ppba)≤0.3≤0.5≤0.8FTIR
Oxygen content(ppba)≤0.06≤0.1≤0.2FTIR
Surface Metal Content(ppbw)<10<10<50ICP-MS

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