Item

N-type solar wafer(125x125mm)

N-type solar wafer(156x156mm)

Growth Method

CZ

CZ

Conductive Type

N-type

N-type

Dopant

Phos.

Phos.

Orientation

<100>±3°

<100>±3°

Resistivity

1-3 ,3-6Ω•cm 

1-3,3-6 Ω•cm

Bulk Lifetime

≥1000μs

≥1000μs

Oxygen Content

≤0.1*1018 cm3

≤0.1*1018 cm3

Carbon Content

≤0.1*1017 /cm3

≤0.1*1017 /cm3

Dimension

125*125±0.5mm

156*156±0.5mm

Diagonal

150±0.5mm

200±0.5mm

Square Sides Angle

90±0.3°

90±0.3°

Thickness

200±20 μm

200±20 μm

TTV

≤25μm

≤25μm

Saw Mark

≤15μm

≤15μm

Warp

≤40μm

≤40μm

Chips

Depth<0.3mm;Length<0.5mmless than 2chips per wafer

Depth<0.3mm;Length<0.5mm,less than 2chips per wafer

Appearance

No Stain, No Pinhole and Cracks 

byVisual Inspection

No Stain, No Pinhole and Cracks 

byVisual Inspection

Dislocation Density

≤1000 pcs/cm2

≤1000 pcs/cm2